Cool idea. I remember one Halloween a guy in my neighborhood put up sheets of screen door mesh material from the ground to the lower branch of a tree and then projected a loop of ghost floating upward. He had a fog machine on the ground for effect and to hide the 2x4 plank that the bottom of the screen was attached to. At night you couldn't see the screen mesh at all, just the projection of the ghost appearing to rise up out of the fog and then disappear into the tree. The overall effect was very impressive. Since the image was projected onto the screen mesh it could be viewed from both sides and gave the ghosts a more ethereal appearance than if they were projected into solid surface like a garage door.

Love that you're giving this a shot, and THANK YOU for ending this video at an in flux state for this project. Helps us DIYers keep up the confidence to redesign and rework stuff that may not work right the first time. I'm going to look into making something similar, though as a couple of people have pointed out, i'll probably point the fog down. I hope to achieve a decent fog wall effect by running fog through a homemade chiller, then into a PVC with holes drilled in it. I can then attach this pipe to some kind of vertical stands, and hopefully get a fog wall effect. Could probably project onto it, as well. Keep it up!

Thanks for keeping it real and acknowledging that everything doesn’t work the first time. It’s a good lesson and a reminder that this is as much about discovery as accomplishments.

A couple of thoughts that might help on the next iteration: It looks like the fans might be introducing a lot of turbulence, which in turn is disrupting the fog. Consider adding some of the corrugated plastic to the 'air ducts' on either side of the tube. If you're using a cold fog (like the ultrasonic one), it will want to fall down, rather than rise up like the hot fog from the fog machine. Consider flipping the whole thing over so the airflow and fog are heading down if you use the ultrasonic mist. Right now the airflow only helps to keep the fog flat in one direction. Consider placing something (large and flat ish) on the left and right sides to block any errant air currents from disrupting the fog in the horizontal direction. And lastly, rather than using a short-throw projector like in this video, consider getting a long-throw projector and moving it farther back. The rays of light will be closer to being parallel to each other, which will mean any 'ghosting' due to fog in front of or behind the target projection plane will be the same apparent size as the primary image.

Super project! I’ve long wanted to make this, since pesky projection curtains just seem so material! Some evil genius thoughts: In addition to collimating the fog flow, using coffee stirring straws to collimate the air flow on either side should yield two laminar sheets of air, between which will be the fog. The resistance to air flow will be high; a powerful fan long term will likely be needed. BTW, a pre-collimator may help further increase the uniformity of airflow- basically any sort of filtering material does not have to be very high filtration) to provide some resistance and uniform flow as the air enters the collimator. The space between the air sheets will need to be tuned in… too close and you will get a pressure drop in the fog zone, creating vortices. Increasing the volume of fog, rather than the velocity of fog should help fill the fog zone. I’d experiment with larger collimators (straws) for the fog- that will reduce the resistance to flow, reducing vortices while increasing flow rate and volume. Rather than fog directly from the fog machine, a set up like a fog chiller (but without the chill) would act as a high volume space, allowing the fog to fully expand and slow as it enters the fog collimator, like a big volume based pre-collimator. Speaking of chillers, flipping the whole thing upside down, having the fog curtain project down would enable you to chill the fog, adding a gravity assist to the whole picture. In that scenario you could reduce the strength of the air curtains, letting them be only strong enough to direct the fog. They would not really have to contain it much, since it will want to go down. Having a downward fog curtain off of your house gutter, over an archway, gate, etc could be a more interactive experience…. Looking forward to seeing where you and the community bring this!

So many great ideas here! Yes, the basic rule is don’t try and fight the medium. Warm smoke rises, cool fog sinks. Also, the laminar air flow device needs to cover the entire opening of the accumulator. Introduce the positive air flow from a longer dryer hose to reduce the turbulence from the fans being so close. Make sure the fan device is variable speed as you’ll need to tune it correctly to dial in the proper air flow. It’s typically less than you think. We had a lot of different smoke/fog effects in our show in Tokyo and they were all LN2. The variables were just how air flow we used to move it from the large accumulator to the port on stage and at what temperature. Also the volume of the connecting lines made a huge difference. For the low lying fog we needed high volume but low pressure in a cool state. For the jets we needed less volume but more pressure. Good luck on the next one!😊

I remember that display at the convention. It was exactly as you describe it, tucked away in a corner. I stood there and studied what he'd built for quite some time. Agree, laminate both the air flow and the fog.

Such a massive fan of everything you do!!! My husband and I are using several of your videos to seriously up out Halloween game! Thank you for sharing your talent with the world!!!!!!

my dad and I made one for a haunt almost exactly like this but instead used a 50 gallon chiller with a high-output DJ machine. the fog got pumped up to a 4 inch PVC pipe with a slit full of straws then drop out over our porch where we projected from my room (had to digitally keystone) so the entrance to our house had a really similar effect to the pirates of the Caribbean ride where blackbeard is floating. wer also used a mesh screen hanging from our garage door to project a ghost of a dead girl whose lifelike silicone body we had decapitated by a homemade gravestone. it was literally just screen door material but in the dark it was super convincing!

This guy deserves 100x more views then he is getting.

So cool! Excited to see other vids of this series!

Somone has probably already mentioned this. The reason for all the straws in the original design you saw is that it "columates" the air, meaning it gets the air moving in a non-turbulent way. The trick is used with water fountains where you want a thin steam of clear water as well. Still really cool what you're trying. I enjoy these experiments.

I'm diving in to all the vids to improve my party! thanks for the vids

Thanks for making videos like this. It makes me feel better about not getting it right the first time and having to rework things. I have learned a lot from watching your channel and wish you continued success.

Awesome! You got a lot farther than I did when I tried to make one a few years ago.

Personally, I prefer imperfect fog (and water) screens. Seeing a patchy, defocused, impressionist hint of a ghost seems far spookier to me than a crisp, clear, and flat projection of a very literal and tangible character. I'd much rather hear a visitor exclaim "What is that?!" than "Cool graphics, bro." Anyway, thanks for sharing what you've learned with your experiment!

The "channeling" you speak of is also used with streams of water (called laminar flow) and lighting (photographers use what is called a honeycomb grid to filter out stray light and create a concentrated beam. Good for highlighting props and scene details).

This is brilliant! What a great idea! I'm hoping the community can come together and work on a solution to this.

what if instead of blowing fog upwards you used cold fog and let it fall from a ceiling mounted unit or out of an attic opening, so it falls like a waterfall?

We were very close to resolving this about 20 years ago. The corregated plastic is creating laminer flow. We used corrugated egg crate ceiling panels, cutting down a section. We did not use fans, but an inline ventury. By installing an air regulator, we could adjust air volume. Smoke was in a collection box, this also helps collect oil waste that builds up. Our last attempt was to build an overhead up duct fan above to assist pulling smoke upwards.

I love the energy you've invested in this and having recently started listening to your podcast, this ties in with the ethos that sometimes things don't work as expected. It's been said in many of the comments that the fans are causing turbulence, and having made a small wind tunnel in the past and suffered a similar issue can totally endorse their validity...but in addition to this you may get a better outcome if all your vapour lines were equal length from the PVC plenum. The honeycomb style laminate you used is a good improvisation but it's not likely to deliver a uniform vapour delivery and therefore you get patchy image quality.

So many awesome suggestions already thrown out there. I wonder which way you'll go. For my two cents I'd create the laminar air flow and met the fog go along for the ride. In the grocery industry, open face coolers use this exact technique. Keeping the turbulence down in the air is the key. Good luck Derek and I can't wait to see what you come up with.

We usually use pvc with holes drilled into it to help disperse our fog. We did this one year because the season happened to be at the right time, just after we'd harvested our hydroponics garden. So we just used the pipe from that. If you have a 3d printer you could print a converter to remove the risk of seepage. Projections are big at our house and last year I had the pvc pipe with the fog flowing just under the projection screen. If I was going to try to use the fog to project onto, I would raise the pipe and fog machine up to above head height with the holes pointed down rather than up. It would have to be 7 or 8 feet off the ground so no one runs into it. It might work well over an arch or doorway. Then I'd project onto it either from another high spot or from the edge. I'd also make sure there's a gray mesh projection material behind it to catch whatever light the fog misses, always hoping that the fog gives it a better 3d effect. Gray mesh in an open space is far less visible to the eye at night than white is. So it's less likely to be seen. Voile chiffon is good for projections and comes pretty cheap on Amazon in bulk. I would avoid using a fan unless I'm going with intocoasters low lying fog generator build. The issue with the fan is it'll push the fog out way to fast otherwise and there's no telling what the wind will be like, if you're building this inside or outside. You want a lot of smoke coming out at a slow pace and hanging around in the same spot for a while, so it has more mass to catch the light like an actual screen would. I was hoping to build something like this this year, but we're in Korea and I have no idea where to get fog juice or vegetable glycerin. Good luck on this build.

Others have already mentioned some good ideas (especially collimating the *airflow,* not just the fog/mist), but two other ideas I'd throw out: 1. Computer fans such as those you used are not intended to produce smooth, laminar flows; they produce all kinds of uncontrollable vortices. Even the differences in the widths of the blades along their lengths changes the flow from the center to the rim. *"Squirrel cage" fans produce smoother, more consistent airflow.* 2. I'm a big fan of using plena to prepare any gas or liquid for injection or integration into something else. In other words, a plenum, or "air chest", where air (or another gas) can collect and be "staged" can help with density, controllability, etc. -- especially if you decide to mount it _above_, so the cool mist/fog can be directed _downwards._ The fog (or mist) that you're using is coming out of the generator as quickly as it can be supplied, but it will always be straining to keep up with the "demand". But if you have a chamber for it to collect in for a moment before being integrated with the 2 laminar airflows produced by the fans, it can have a better chance to build up to a density that will produce the desired effect. (This is kind of like an air compressor attached to an air supply tank: that produces much more consistent airflow than just having the air line coming directly off of the compressor. Or the way a pipe organ has an "wind chest" to collect high-pressure air.) Again, as others have already suggested, chilling the fog/mist will help by both increasing its density and to causing it to fall through warmer ambient air. Combining a chiller box and plenum would be the best of both worlds. Regardless, you've earned another subscriber. 👍

Thanks!

Nice timing. I have been wanting to do this for a couple of years now. I'm pretty sure I know what I need to do, looking forward to seeing if our thoughts are similar.

Tony Ouslers the artist, has this thoroughly figured out.

How about inverting the device? Chill the fog first and use gravity since the cooler air will descend towards the ground. Maybe throttle the fans power output to help achieve a nice slow and smooth sheet of fog. An added bonus would be the cooler chilled fog will accumulate on the ground providing a slow creeping fog after its initial purpose.

A 4 to 8 ft long version of what you did but instead hanging it from the ceiling is how we accomplished our those still choppy it looks good in the woods or in the dark dark..

As to improvements, shorten the plastic part/extend the sides so the fog is forced into a now smaller slit created by your side panels.

I've seen a variation of this effect at Six Flags Over Georgia's Monster Mansion dark ride. One of the upgrades they made a decade ago was a mist curtain that projected a beckoning spectral face as you entered the marsh (DON'T GO IN THE MARSH!) The projection seemed a little blurry as well, not sure if it was intentional or not but it was a neat effect to see in person. Might just be the nature of the beast for fog/mist projections, but it could help sell the illusion of a ghostly figure if you had a framing device like a portal or a temple entrance, maybe a mausoleum?

Detroit tiger Awesome love the fog machine

Inverting this and using a fog chiller might solve some of your problems. The fog chiller becomes a resting point for the fog... no more fits and starts from the fog machine. Put the fans inside the chiller to push the fog into the inverted directional unit. This keeps the turbulence from the fan out of the expel point. This might allow for a smoother, more continuous curtain. All experimental, of course.

When you get this figured out it will be an interesting effect.

I'm wondering if you considered the turbulence issue created by the fans with your particular setup?... Instead of directing the fans up, use a more powerful blower directed into the chamber then using the same corrugated sheets, direct the airflow up towards fog/mist... Attempting to keep the fog/mist "sandwiched" between the sheets of air on either side of the fog/mist ports... Next, consider the volume of fog/mist you're pumping out... If you continue with fog, build your own fog machine and consider you may wish to over engineer it to produce the volume you'd need. That alone could make indoor use prohibitive and then you may wish to stick to outdoor use... If mist is the better option, obviously you'll need a more powerful mister. Maybe even consider super chilling (not freezing) the water?... Third, you should consider that your projector may not be powerful enough to produce a good, bright, "sharp" image on your chosen "screen"... Good luck.

when I was working on a prop that refused to work, no matter what I did, I went into the house and my husband said, "you look absolutely dejected!" I told him "My prop failed" His answer to me, "do it over and fail better" He was right LOL, I took it apart, drilled some extra holes, and it worked! (It was an electric chair)

This is in general a very intresting idea.

um, just watched the vid 😳 I'm in over my head 😆

Cool concept - thanks for sharing, always interesting to see the interim stages & thought processes on a project. I see a number of suggestions about slowing the fan speed - you likely already know this, but you can lower the input dc voltage to slow the fans - super easy if you have a variable supply, but simple enough to find a 9v or 7v supply in a junk drawer.

I have been thinking of this same special effect for a long time! I already do rear-screen and "holusion" projection in my haunt but I have wanted to make a screen of fog like this. I think your build is great but a suggestions I have is to invert the box so the mist/fog is going down. Then reduce the speed of the fans so that the it is more of a directed breeze doing down. There is a version of this "fog screen" at the end of the Harry Potter ride in Universal Studios. Near the end of the ride the "Dark Mark" is produced by this fog screen effect and an animated skull is projected on it. I have toyed with ideas on how to do this and your design comes close. I just think that the volume of air is either too much or too fast. Slowing it down could allow a thicker fog layer. Thanks for all the videos, I am a big fan of your channel. Also you have a great voice, you should do more voice-over... or maybe you already do!

I did a fog screen last year for halloween using 3D printed hexagon air channels. You really need a layer of air on either side of the mist moving at the same speed and direction to get a stable projection surface. It turned out fairly large in the end (working on smaller this year). But I was able to get a 4ft wide by 4 foot high projection wall before the fog became to unstable.

I remember a system like that a while ago. The system used a thick cascading mist like a waterfall with a projector. You could walk through it.

in a aquarium parc I saw something similar, with pipes projecting multi water vapor, that was perfect for projection

For the humidifier, top down. Thats how Disney does it. For the fog machine maybe heat the fog. If you heat the fog you may be able to skip the fans altogether. Use a controller like an arduino to make the fans variable or just use potentiometers for an analog solution to control the airflow from the fans, maybe you can dial in less turbulence. Attempting to achieve "laminar flow" from the corrugated channels is a good idea, but im not sure that can be achieved as easily as, say, water. Interested in seeing the next iteration.

You need fog and ultra sonic mist, and invert the box so it’s facing down to help remove the condensation.

Awesome concept. This has probably already been mentioned, but have you tried turning off the fans and bring the fog unit closer to the box with a gap between the box and the nozzle of the fog machine? I've done a fog screen before at a haunt but it was directed downward for people to walk through. I did not know an image can be projected on to it! That is AWESOME! Thanks for your hard work on these tutorials.

Great video Derek. I've been able to do the same but with Low Lying Fog coming from the top down. I've got a couple geysers from Tater - might give something similar a shot in the near future 👊🏻

So, having never worked with a fog machine except on stage with bands, I'm limited in the practical application. But, one of the things you mentioned was moving the fog machine farther away. I'd simplify the process by experimenting with increasing the length of connecting hose between the fog machine and the display unit. At some point, there has to be a sweet spot between the pressure it puts out and the eventual exit of the fog.

The Davy Jones projector effect in Pirates of the Carribean has the fog draping straight down in a sheet, and it has no odor so it is probably ultrasonic and perhaps chilled to help keep its form and pull it down.

You're awesome 👌 👏 😎 ❤ enjoy your videos 📹 please keep them coming 🙏 and here to help get your videos out to everyone 😀

I still think it worked great! If the room was dark it would have been spooky and cool. Great start!

run the fog through a chiller and emit it downward from above, should give a nice fog-sheet

that was pretty cool. what if instead on a large fog machine you used vape pen it won't solve the issue of the fog being visible but should give a more consistent fog cover with the benefit of being more portable. making it more useable. imagine doing a variation on the invisible man costume where the projector is hidden in the collar pointed up and the fog curtain is raining down from a bowler hat. the effect could be a mist ghost. add into the projector not just a skull but a 4 point pepper's ghost so the skull has a 3d look to it. the mist will hide some of the problems of the projector system and will make an over all cool effect add some skeleton gloves and fog piping to the cuffs of your suit and a very dapper gentleman ghost you will be

What if you used the same concept just turn it upside down and use cooled fog from dry ice or something

Very good effect. I wonder if a top down approach would work better? The Pirates of the Caribbean ride has a fog curtain with a projected image. The fog is generated at the top and just pours down over the guests.

$10,000 fog machine that is capable to keep running g for the illusion along with a 10,000 mist machine to compensate when fog runs low. Mix them together you get a large screen. I do t know

Thank you so much for posting this video. I have two very large fog machines but never got around to using them as a projection screen.. I had planned to . I'll just stick with a thin piece of material . Thank you for saving me from the aggravation ! By the way where did you get the red bust in the background.?. I would love to have one ! I've been searching everywhere.

Would there be any value in adding a second fog machine (and if necessary a second “output”) to make is somewhat more dense of a screen, per se? (I do like the overhead /downward mount idea, though!)

I think all you need to do is slow the speed of your fans by half and use regular fog machine. Your fans dissipate the fog too quickly. 😊

Very cool. Perhaps play with different fan speeds or try chilling the fog first. Also a hazer might work better than a fog machine . Will definitely have to try this. I would buy a glowforge if they ever make it so it will work offline.

So awesome, I admire how you engineer these projects up! May I ask where you learned these skills/any resources you would suggest to start off with? I am very interested in adding motion to my projects/dioramas. I also want to learn about LEDs, especially different ways of how to power them. I would Ideally like to plug a project in (instead of batteries), and even better, to have a remote that works with them. Thank you in advanced, I truly love your work :)

I had this idea a while back. My idea was to use a fog machine and chiller. And create the curtain and have it flow down from above instead of below. Then fans may not be needed and as the fog machine recycles (heats back up), the ghost is invisible. I hope to try it or you can attempt it as a Part 2.

Perhaps invert the project and use a fog chiller set up which would allow for fog to condense and gravity to assist the process. Similar to Pirates of the Carribean's Davey Jones effect.

What about using low lying fog and have it drop down from high above instead of trying to push the fog up. You ma be able to make it more dense that way. Dunno just shooting from the hip. Either way nice project. Oh just seen the past comments on this. Sorry for the repeat.

The song sounds so familiar it’s driving me up the wall!

Try to get you air curtain to be laminar flow as well so it does not disturb the fog as much. Maybe use coro on the air venting too. Longer the better?

Use the corrugated plastic to guide the air instead of the fog. This is what's called a laminar air flow. It should make the air less turbulent and trapped the fog in between it. Then you won't have problems with the condensation of the fog inside the plastic. You might also try a bunch of plastic soda straws yet thick soda straws compressed together to make a honeycomb pattern. It might make the air flow smoother than the square coordinated plastic channels

Start by cooling the fog, making the fog drop instead of climb, and slow down the fans

I’ve seen a mist version at a Tampa Aquarium, it’s meant to look like a portal (sort of) that ppl walk through, and there’s a cartoon animated on it, and the mist reaches the floor, so 8-10’. The mist in that instance was more like a waterfall, coming down from the ceiling in a “wall” of mist. However, there was never a “Solid” mist, it varied, but was THICK enough to display the projection… if there were fans used, they weren’t very powerful or were placed further away. So my test ideas would first be: turn the mechanism upside down, and trim the gator board to be flush or lower than the lip of the opening. If that doesn’t change much, I’d reduce the fan to one- OR- extend the chamber so the fans are farther away, maybe 10-12” to start, increasing 6-8” if it looks like it’s improving the situation, and I’d use cardboard to test instead of more laser cuts.

Its close. My bet like other is the air turbulence has something to do with the poor fog sheet. I'd suggest using a blower style fan, with a buffer box that will redirect into a similar thing to your corigated sheet. this will create a laminar flow fog, surrounded in a laminar flow air path. creating that and hanging the fog sheet box upside down to the orientation the one in the video is in will solve the condensation build up in the tube paths.

When I've seen this done before, there was a TON more fog. (I believe they used 3 theatrical foggers.) I think, too the fans may be blowing a bit too hard for the amount of fog you currently have. I'm not sure of the scale (or budget) or exactly how to scale down what I saw, but I'll work on that too. Good luck with this to all! Let's make it work. ;-)

Disney used to use this effect in the pirates rice in mk orlando. Try instead of coming out from below flip the box position so either the most or fog drop down instead.

I'm no expert by any means, but some ideas I had are to turn it upside down so the fog falls since it would be cooled down by the fans. Also, try lowering the speed of the fans so the fog has more space to work with.

I don’t think it’s the fog that needs the tubing but the air flow itself. The tubing is acting as a duct to direct the flow but in your set up, the air is what needs directing, not the fog. The fans spin the air and the box itself causes buffeting as the air flows through. Check out how those fancy Dyson bladeless fans work. The solution might be in removing the turbulence from the air flow so that the fog or mist can slip easily into that narrow, controlled stream.

With the current set up you could try adding a row of halogen bulbs or LED’s under the stream of mist to get a fire effect like the Opti-myst fires. Not a fog screen but something you could try !

I think maybe try a hazer instead of a fogger as it gives a lot more output with little or no reheating time. From what I saw I figure if you had more volume of fog or mist you would get a better image. I agree with the comments about the air flow needs to be less disruptive and maybe having it fall instead of blowing upwards you would get a more controlled effect. I am sure you will figure it out, looking forward to your next attempt.

I think instead of going from floor to ceiling it should go the opposite way, use low lying fog to create a fog waterfall effect that you can project your image on to.

I think this is awesome. I like that it's an experiment we get to follow along with. Side Note: I enjoy listening to you. Almost a Casey Kasem kind of voice. Ever thought about reading audio books?

Good video!! I like the corrugated panel idea but i would have tried some different methods. I would have tried other corrugated items, with bigger holes. Also on idea would be to get a better mist maker. Try a ten port submersible mister that are used in backyard ponds or mushroom growing, the output is phenomenal ! secondly, if using a mist maker, it work better for hazing or low lying fog, so have it suspended and shoot downwards. Keep in mind, using a mist maker like this will create condensation, so better to use outside. Also, dim the room to get a better view of what you are projecting.

Maybe try having adjustable speed to your fans. Another option may be to use landscape misters in a fan pattern spraying down from above and projecting on the mist of water.

Dude, you missed your calling. You need to do voice acting. You sound like Casey Kasem's brother. Heck, you could clean up by just reading reddit stories on youtube. I'd listen to the soothing, dulcet tones all day. Don't even care what you're talking about. All jokes aside, it is a rare talent. Very cool to run across a non-pro who has it.

Reduce the fans by a lot, especially with the smoke machine, as the smoke is hot and will rise on its own. Introduce a plenum box to "store" the smoke and even out its pulses and consistency.

Maybe a dumb question, but did you focus the projector to the plane of the fog? You didn't show anything like that in the video. My projector has to be focused like a camera depth of field(plane of the screen/fog). Turn all lighting off but the projector. Luminosity could be a factor too. Need tons of light.

Maybe have the fog thicker, chilled and falling from above as others have stated and have the fog come through the pvc and attach to a fanned out Y shaped piece of plastic like the accessory on a vacuum cleaner, then attach it to the center so of the pvc not the end so the fog is distributed evenly. Coming from just one end of the pvc leads me to think the flow will be greatest at the beginning of the slot and less at the end.

I like it! I was thinking that a screen made of Saran wrap or some sort of see thru plastic wrap that would be between the projector and the fog. The "Screen" would be something for the fog to cling to...(or collect on...). if the screen was at an angle, and the fog came from the top it would "roll" down the plastic. (?). Another odd thought; The corrugated plastic (Jets?) that sit in the tube... Would it help anything if the "Jets" were different heights? This looks like such an interesting idea... If done right, I could see someone peeing their pants...!

I haven't seen one of these facing up, its always been facing down. Maybe try trimming the coroplast down a little. Also try narrowing the opening space for the air flow to come out around the Coloplast [maybe with duct tape to test]. Getting a laminar flow is tricky.

Can we ask Spectral Illusions to add fog to their video?

Great video and idea!! Maybe, fog should be push by a blower trough pvc pipe and yellow plastic cardboard, sorry i lost the name of that...use to speak French 😅

What about a water fall instead of forcing it up. Create a frame like a door with that box pointing down...and get it to come down in a sheet. Like a fog curtain. They did that effect in Pirates of the Caribbean for Davy Jones.

How about trying a cheap, thicker fog? Using the mister you already have, try a mixture of 70% distilled water, 30% glycerin (be sure to shake mixture before use). Personally I'd start with 32oz or less, just to see if it works better.

Have you considered having the mist/fog FALL rather than rise (i.e. mount your rig on the ceiling instead of the floor), this should allow for a much fuller fog that goes a further distance as gravity will work WITH your rig rather than against it.

Very cool video. But what if you were to remove the corrugated material and just let the fog pass through the slit you cut in the pipe?

Instead of doing the fog effect going up, instead try to invert it and have the fog go down and use a chilled fog. Could possibly give a better result.

Maybe have the unit upside down hanging so gravity helps it? I don't know just thinking...

Instead of using a fan and blowing the fog upward. Why don't you turn it upside down and use chill fog flowing downward just idea don't know if it will work

Disney land had a fog wall coming down that they projected onto. It was the pirate ride if I remember correctly.

Nice build. Do you have templates available?

What if instead of the fog floating upwards you set it up so the fog flows downward from the pvc pipe? Basically, instead of the fog flowing from the floor up, it flows from the ceiling downward.

This seams like the same concept that Disneyland uses for its Fantasmic show

I wonder if this concept with the fog machine would work better if it was pushing the fog downward instead upward, as I believe the fog is heavier than air. Just a thought.