I know I am a deity heathen for not knowing this. But, what was the point of the green sand in this? Why not A) build the ducts into the original plaster mold. Or B) just heat the mold and pour the metal in on top with a retaining wall?

What I like in your videos is the lack of any dumb get on your nerves music, and you don't have to say a word. Just watching you do your thing is easy enough to understand everything. Kudos sir!

Simply amazing! What you do is a lost art. I had the most enjoyable time in Jr. High shop class with our foundry back in 1979. Too bad they don't teach this kind of art anymore in schools.

Have seen others cast pieces like yours but none have the quality you produce, well done sir, from a person who worked 25 years in a Grey Iron foundry !

It's a pleasure to learn from someone who has, through many years of trial and error, just about perfected this art. I really appreciate you putting these videos online. A wealth of information here.

Another 15 minutes of my life that wasn't wasted. I could watch this stuff for ever. I'm thinkin a Netflix special. Ha, Thanks again Myfordboy.

That’s a beautiful part! It looks like it was die cast in a factory, not done in a home foundry. Nice work!

Certainly the most intelligent and elegant home casting technique I've seen on this site. Thank you and Bravo!

Not only hugely informative but a Zen like experience to watch... I feel better already!

That's awesome. It's really cool to see you learning new and mixing in old technologies.

what i am impressed is by how the pla melted without leaving any residue behind! great stuff mate well done

Such an inspiring thing to watch! I agree with the others, I appreciate the no-frills approach to the video presentation (no music). It's strangely calming but also exciting to watch, and informative. I absolutely LOVE how your box frames, work surface and tools all look like they're re-purposed parts of an old desk! I really want to make a little foundry for myself, now!

Thank you for sharing. I found this very interesting and educational. In my years of manufacturing I'm sure I've purchased millions of alum casted parts, but never saw how they were made. Now being retired I found your video fun to watch.

This is seriously such a good video. It's so rare to see such a detailed process clearly, understandably, and performed by someone who knows exactly what they're doing. Great job my friend; very well made video and casting.

Unbelieveable! The most clean and perfect lost PLA I have seen in youtube! God Bless you and your knowledge

VERY impressive work, very elegant and accurate. Definitely a master at work.

Fascinating! I subscribed for more of the same! Easy watching, no crappy music, just a good engineer at work!

Exceptional and inspiring mate, thank you. I just stumbled onto your channel and am really pleased that I did. The brain is spinning now with thoughts of what I could make with my little old 3D Printer and your metal working techniques. Thank you so very much, great work and truly inspirational, thank you

You sir are one of the masters of this craft. I love to watch a master at work.

Very clever! And the quality of the cast is awesome!

I admire people like you. Smart, resourceful, very well skilled.

Ok, this is reallly clever. I like how you blend the 2 techniques.

The definition of that part was outstanding, you could even see the grooves from the printing! Very interesting technique to learn, thank you for the knowledge you put out there good sir :).

That is one nice looking part mate. Thank you for your time and labor doing these video's. learn a lot watching you work. Over the years you have made some very nice projects, and again thank you.

You are quite skilled at displaying the methods that can be used to make castings!!! Thank you for sharing!!!

Amazing work! Imagine how you could easily fit cooling tubes inside an engine or something. I would love to see some more complicated parts!

Very neatly done, sir. I have been 50 years in the metals craft and i have only just started 3d printing. It is quite exciting and you have shown me a fine example of a home process to add to my workshop. Thank you.

Found your blog, answers A LOT of my questions. Wow. What a treasure trove! Stuff you don't learn in school and plans that are not found anywhere else. Thank yo!

Really nice of you to share the process in such detail. Great quality.

Amazing. Thank you so much for your ongoing posts like this. It really inspires me to keep going on my own stuff as well. keep up the great work!

10:12 The most beautiful part...

You have golden hands! I admire your videos and your works!

Very much enjoyed your video. I too appreciate the simple live audio and especially appreciate that you held the camera still. Good content, good video. Excellent. Thanks.

I have been day dreaming about doing this since i first got my printer

This appears to be a mix between sand and investment casting. Thank you for making this video, it's very informative.

Wow, amazing videos, also great quality finished. I’ve learned and enjoy much watching your videos. Keep up the great work. Thanks from Florida👍

this is the best video i have ever seen for teaching casting with best details with easy tools ... you are master

This is rather clever. With investing casting generally the metal if forced into the investment mold. Either by spinning the mold while casting or sucked in using a vacuum. Placing the open top investment into the drag allows air to escape up through the sand in the cope.

I am amazed by the finish quality of that part it is as good as a multi million dollar casting plant thumbs up

I devised this process for soluble filament but I have a toddler and limitations atm; however, I'm glad I saw this for my future projects. You are a scientist and a scholar.

What an amazing combination of investment and sand casting all in one

Beautiful how the filament lines are visible in the aluminium :)

Part turned out great!

Awesome work. Loved the simplicity to obtain such complexity.

Never get bored of your videos. Thank you

I watched this video and then, to my horror, realised that I wasn't subscribed to your channel! Needless to say, I sorted that out quickly! As others have said, your videos are very well done and the natural soundtrack is all it needs.

I cant believe how relaxing it was watching this!

This video is a gem. It's concise and all the important bits are covered. Thanks!

At 3:06 in the morning, your Video, Sir, was refreshing. A simple, no fuzz method, done the old way: with care. Thank you very much. It certainly compares in a good way with all the IDIOCRACY exposure out there in KZfaqrs. Thank you, again.

You made my day.. I was struggling to cast a 1/6 scale gun breech.. Many failures. Thanks. Attila

Never seen this done before with the combination of the plaster and green sand. Hope to some day start learning to do this - I've started to love working with metals.

Wonderful. I have used investment plaster to do lost wax casting in bronze in a centrifuge , to make masters in a figurine factory. Brought back many memories.

You just learn so much with this guy, amazing stuff, all that firing of the plaster and its still soluble.

I’m showing the guys at my local foundry this technique tomorrow! Brilliant. And what a high quality casting.

This opens up a whole new realm of desktop manufacturing possibilities. I always thought you needed wax-like material to be able to burn it out and some companies are charging ridiculous amounts for SLA wax-like resins. Assumptions challenged and thank you, sir!

I got a 3D printer. Now the only thing I miss is a metal melting oven... and a backyard. I enjoyed sir.

Excellat creation. Idea enthusiasm focus and patient execution is appreciated

Ye good olde table leg tamper, love it!

Gorgeous work as always! Looks like it might be time for a new quenching bucket, though... ;)

Brilliant! No stupid endless crappy music - just pure instruction. Now we want to see more of your work! Really have to do something about furnace prices tho!

This is awesome. We've tested making vacuum formed moulds from 3D printed parts using the FormBox but this is on another level!

Very interesting, thankyou for sharing.

It is important to note two things: One must use the correct plaster, and heat it slowly in order to avoid cracking.

oh, thats perfect sand mold Sir, very satisfied to see !

Excellent cast resolution! Very impressed

In the post-apocalyptic world to come, I'm definitely looking you up!

So this is really a hybrid investment/sandcast technique. Great job. I use a little soapy water or hairspray on the pattern - helps the bubbles lift away.

Amazing work, you have true incredible skills and ingenuity!

Greetings from Canada. My I add my congratulations for your fine and inspiring work.

Sir, it a well explained video. Please, could you tell me what machine did you use for vibration to make the air bubbles go out.

yesssss! No porn-music! Thank you so much! And I will try myself, what you did here! thanks for posting! This investment how you call it is a game changer!

You have hands down the best channel for casting on youtube. Cheers!

I thought I had seen awesome until this video. Thanks for taking the time to create and share it.

Interesting! Never seen it done like that.

brilliant! i've been wondering about "lost pla" for a long time, I can't believe how clean it looked after the burn-out. Did you use and especially low infill? i love to 3D print and i'm building my own foundry right now (incidentally love your videos on burners - i came up with a simple design for a central heating nozzle burner and in researching some porblems with it, I saw you'd allready done it, but better!, I'm hoping to branch out from just Painting Videos to other interesting things i do too. You're an inspiration! thank you so much for making all these videos. o/

I must say this is a nice printer and you should be very proud of your work shop, I served my time as turner at rose brothers I wish I had your shop 80 year old man

Thats an excellent piece. Look at those edges!

Thank you for that video. I learned a lot. 2 questions: 1. Could you leave the plaster away and sand form it right the way? 2. Does the first electric oven melt the aluminum too? I reeeaally appreciate your work in silence - by the way!

hello Sir how many hours you left the plaster mold in the oven .?

I’ve been watching you for years, sterling engine days, just subscribe, sorry it’s been so long, great work, stuff I’m doing. Love the casting vids. Thanks

Wow thats impressive quality. Nice work

7:11 - I've never seen that done before. What does the well do?

What is the purpose of the well in the cope?

That was awesome! I didn't know that plaster could be used that way! Thank you!

Really enjoyed your video. I remember during the late 80's when i was in Junior high we had shop class and learned woodworking, welding etc. This was demonstrated to us by our instructor but I never tried it. I have Adult ADHD (ADHD) back then, but that was when it wasn't even heard of. The point is I could not focus on things as paying attention to the instructor describing the technique or the type of sand. So I was apprehensive. Now that I self-manage my ADHD I look back and see how I did not understand, but yet when I was focused on something I liked, my mind went wild with it. Now I have embraced my learning condition. Not that this means anything other than the point that I remember this being done. To do this at home though. I would need a refresher and where to get the materials. Finally, with all the different casitng methods I have seen people demonstrating and talking about bubbles in their molds. I am thinking to myself. "Why are they not using a massaging vibrator to get the bubbles out. And you sir are the first to do that. Yay! Again, Great video.

Your wife already know that you stole her tupperware and ruin it...? Beyond the joke an excelent work, very clever.

Investment plaster is so weird; somehow "able to withstand the temperatures of molten aluminum" and "water soluble" seem contradictory.

Badass! I was thinking about doing this and was concerned about the metal/plastic interfacing. The investment step is exactly what I was looking for. Thank you.

Best demonstration video ever. Exactly what was needed, no more no less!

MFB I notice you only have a feeder hole but not a vent for exiting gasses or putting various wire punctures around the mold also for venting the gasses I have seen just about all your videos and am extremely impressed and I know the way you do it does give you excellent success rates I am just curious to why you dont use them a lot of the other foundry / metal casting folk all use them IE Olfoundryman Brian Oltrogge swdweeb sandrammer Love the idea of the investment for a smoother end product between the 3d printing and investment you have got the process down pat Tony From Western Australia

dang I need to make some parts....if I only had a 3d printer....&furnace...and green sand....and....

Thank you! Quite remarkably useful - been enjoying 3-D printing for a couple of years, did 1 (one) simple lost-wax cast as part of a foundry class in the 1960s. Kept on thinking wouldn't it be good to be able to print in metal, or failing that, in wax? Ha! This is clearly the way to go! Now we need a furnace, and more.....

Transform plastic into Alloy through gypsum mold wow amazing you are the best

Greensand: Im pretty sure the guy who named it was Daltonic.

Great video. I'm collecting some of the tools to start casting aluminum myself. This is extremely helpful.

Nice. So much effort! Imagine doing this for every single component of your printer

Show the machining of the part you just made

Hey! That wasn't green sand, it was clearly red. Haha ;-) Thank you for the great video.

At 3:43, amazingly clean plaster mold. Beautiful.

This is neat how you combined both sand casting and investment casting in the process. I work for one of the largest investment casting companies in the world. I am actually a Rapid Prototype engineer where I setup builds to create patterns on our Stereolithography machines. We’ve built segmented patterns that we assemble and cast one piece castings of 60”+ out of super alloys and titanium. Mostly for the Aerospace industry like fan frames and such for large jet turbine engines. We also have a few 3D printers but mostly use those to build fixturing. I’ve been in the industry for almost 40 year but still love watching all sorts of castings being poured. Especially at small shops like yours. Nice project!