Can you 3D print a Coaxial Shooting Rest? Part 2(a)

Рет қаралды 7,072

Күн бұрын

I've been quite busy lately but when i get time I still put some effort into this idea.
Here I demonstrate the latest revision of the coaxial rest top incorporating a flipped vertical axis without flipping the horizontal as well.
Important:
The bearings and linear rail are listed in this description below. The rest is just whatever m3, m4 and m6 bolts you can find at your local hardware store.
This is strictly a proof of concept though and a full "down to the last detail" parts list would be misleading and I would end up with people complaining that they built it using my parts list and it didn't work. This is demonstrating that it's possible to reverse one axis but not the other.
I should point out that you're going to need threading taps to thread the holes in the printed part. If you know how to use a threading tap then you no how to buy a bolt or screw to screw into it.
I'm not being facetious, just being open and honest.
3D printing interrelated parts is not as simple as youtubers fake it out to be. Yes... "fake it".
There is a lot of extra work that has to go into tuning the design to the printer it's being printed on and the slicer that's slicing it. Even 0.1mm can be the difference between being loose and 1 hour of flat sanding to make it a smooth fit.
Visit: www.mrbcrc.com for the freecad files.
Don't forget to check out the EBC while you're there.
Part 2(b) where I tidy up the freecad file can be viewed here: • Can you 3D print a Coa...
Bearings: www.aliexpress.com/item/40003... (GE6C)
Linear Rail: www.aliexpress.com/item/10000... (MGN15H + 100mm)

Пікірлер: 26

@oz951 2 жыл бұрын

Thankyou for developing & publishing the files for this rest. I will be making this my first serious project after Xmas when I receive a 3D printer. As I shoot off a bipod I will be adapting this as a replacement rear bag rig for use when I am doing load development.

@CreativeMistakes 5 ай бұрын

Thanks for the information. Been wanting to make one myself

@jazzking8380 Жыл бұрын

Mine is now printing, very curious how it will trun out and work, thanks for sharing this design

@rfresh1011 3 ай бұрын

Do you have the *.stl files or can you tell us how to pull them out of the FreeCAD file? Thank you.

@andsongomes Жыл бұрын

Please, is possible you list all parts of pieces? What type and size of screws did you used in your project?

@MrBCRC Жыл бұрын

As I said in another comment reply... The bearings and linear rail are listed in the description. The rest is just whatever m3, m4 and m6 bolts you can find at your local hardware store. This is a proof of concept though and a full "down to the last detail" parts list would be misleading and I would end up with people complaining that they built it using my parts list and it didn't work.

@russelldee680 2 жыл бұрын

Thanks for your efforts. I have been thinking of this myself and you have saved me a lot of time and effort. What type of filament did you use?

@MrBCRC 2 жыл бұрын

I was just using PLA mainly because it prints very cleanly for me. I've been using PETG lately for a lot of things but it's quite stringy for me and will need extra work but it's strength is impressive so it's sometimes worth the tradeoff

@robertbuchanan169 Жыл бұрын

Fabulous and well thought out. Are you publishing plans?

@MrBCRC Жыл бұрын

They're on my website. www.mrbcrc.com

@spikesefcovic6737 2 жыл бұрын

Thanks for the work! I am starting the print and am ordering hardware. Do you have dimensions or part # on the metal shafts?

@MrBCRC 2 жыл бұрын

Just adjust the drawings to whatever you can get your hands on. The full files are there. You can check the dimensions in the cad files and/or choose to change them as required. A lot of people have chosen to modify my designs to better meet their own requirements before printing. 3d printing isn't precise and there may need to be some adjustment to get parts to fit and slide smoothly. 10 thou here or there can add up.

@spikesefcovic6737 2 жыл бұрын

@@MrBCRC Ok thanks for the quick response. I just figured that while I was ordering the bearings, I would order the shafts.

@larryd1296 Жыл бұрын

A complete parts list would be much appreciated.

@MrBCRC Жыл бұрын

The bearings and linear rail are listed in the description. The rest is just whatever m3, m4 and m6 bolts you can find at your local hardware store. This is a proof of concept though and a full "down to the last detail" parts list would be misleading and I would end up with people complaining that they built it using my parts list and it didn't work.

@owned323 2 жыл бұрын

Can you publish a part list for the parts that are not printed please?

@MrBCRC 2 жыл бұрын

Links to the bearings and linear rail are in the description. The rest are just standard m4 bolts of varying length to assemble and M6 bolts and nuts for the handle/shaft. This version is just a concept that requires modification.

@herukusmartono8960 3 жыл бұрын

Any idea on 3d printing the base?

@MrBCRC 3 жыл бұрын

The issue is that we need some stability and the plastic wouldn't be heavy enough to be stable. Maybe something involving some steel piping and 3d printed bracing would work. I'm actually thinking of getting a local machine shop to cut me out some steel plate in the right shape. The other thing we need is some gross vertical adjustment. I'm still pondering how to do that too.

@herukusmartono8960 3 жыл бұрын

@@MrBCRC i actually put it on top of porta aim and it turns out to be too high, next i'll try it putting it on top of a desktop tripod haha

@MrBCRC 3 жыл бұрын

@@herukusmartono8960 I predominantly shoot fclass so higher is normally a good thing for me. The first design was very high i admit that. The second i tried to get lower and did succeed somewhat with that. It sounds like you're leaning towards a base design like the seb mini. That should definitely be achievable with 3d printing and now that i think about it it's probably the right way to go for this. I've just seen something else that could be good for 3d printing. A rodzilla 5 axis top.

@herukusmartono8960 3 жыл бұрын

@@MrBCRC i only shoot an airgun for 25m benchrest, so 3d print should be just fine.. i'll look in to it. Thanks a lot

@seemoore9117 2 жыл бұрын

What filament are you using? PLA?

@vicsheedy4207 3 жыл бұрын

How can l get one

@MrBCRC 3 жыл бұрын

This is really for anyone that has a 3D printer. I would be very cautious about selling these due to a number of reasons. For a start it's still experimental at this point. We don't know how well this will last under regular shooting conditions. It doesn't have good base options yet to attach it to. I've got a couple of old caldwell rests i can use but not everyone has that option and the fitment requires customisation. The base is probably the more important component as it's not easy to DIY one. On a positive note... for a fraction of the cost of a farley or seb rest you could buy an entire Ender 5 3D printer and make it yourself.

@vicsheedy4207 3 жыл бұрын

@@MrBCRC ok. Thanks