1873 Winchester Air Rifle

This design has been in the works for almost a year and I'm finally releasing it!

-- NOTICE: The biggest piece is 290mm long, you will need a decent size printer. I used a Chiron myself. --

-- KNOWN FLAWS --

This project isn't completely finished yet, but still in functional order...
- The slug will slide back into the load block sometimes jamming the reload, simply tilt the rifle down so the slug goes back in the barrel. I will try to design a mount point for the spring into the muzzle block so the spring is more fixed and not "floating".
- Sometimes when loading the bullets through the side load slot, they can spring back and into the mech area. I am not sure if it's the angle of the side load into the load block, need to do more testing on this. An easy "fix" for this would be to break off the side load flap so you can get the bullets out, though not exactly a fix, lol.
- The compression fitting in the barrel mount will get an update soon because it is a bit tough, but does work.

This air rifle is designed after the 1873 Winchester and it nearly a 3D printed replica minus some changed dimensions because of metals parts vs 3D printed ones. It is FULLY FUNCTIONAL. Mechanism works great and will load bullets (also 3D printed) from the barrel mag into the load chamber. The barrel mount has a cool feature, there is a built in compression fitting (uses the M4x16 bolt/nut). This will allow you to pull the barrels out and thus splitting the whole rifle into two parts for easier storage and transport (shown in pic). :)

There are a few print combinations you can do from the rifle being a simple functional display prop (no air pressure hardware) to being a complete firing rifle (though not very powerful). I have included the left side plates for the air power version (ShellLP and StockLP) and also a version for non-air (ShellLP-crest and StockLP-crest). The crest was a quick addon I made for a better wall mounted look. There is a blank crest (CrestBlank) and wolf crest (crest) file uploaded. You can add in an animal, name, or whatever you want on the blank. It's more of a personal customization option.

I have also included an STL for a jig that will help set the PVC and CPVC at a 1" offset.

--- HARDWARE ---

The hardware you will need to complete this rifle is as follows...
- 2x 23" sections of 1/2" PVC
- 2x 24" sections of 1/2" CPVC
- 2x #10-24 carriage bolts with nuts
- 6x M4x40 flat head bolts with nuts
- 2x M3x40 flat head bolts with nuts
- 2x M3x16 flat head bolts with nuts
- 1x M4x15 flat head bolt with nut

...if you want the air pressure, too...

• 12VDC 1/4" NPT solenoid https://www.amazon.com/gp/product/B0794XJGBF
• 2x M5x0.8x15 socket cap bolts (for solenoid)
• 2x M2x16 socket cap bolts with nuts (for trigger switch)
• 1x 17" section of 1/4" air hose
• 1x 12" section of 1/4" air hose
• 4x 1/4" NPT air hose clamps
• 2x 1/4" NPT air hose barbs (connect to the solenoid)
• 1x 1/4" NPT barb 90 degree (connect to air chamber)
• 22 gauge wire https://www.amazon.com/gp/product/B07TX6BX47
• 9V battery
• 9V battery connector https://www.amazon.com/gp/product/B07D6RNJVR
• Lever switch NO (this one has both NC and NO connections) https://www.amazon.com/gp/product/B07MW2RPJY
• 2x 0.8x10x305mm compression springs

...I hope I remembered everything, lol.

Oh yeah, almost forgot. The shell and stock half parts can be assembled WITHOUT THE PLATES if you want, but you have to use socket cap bolts instead of flat head. This would be useful if you want to show off the guts in a completed form.

If you are having issues getting the reload to act properly, try adjusting both your carriage bolts and/or handle bolt, these will affect the functionality of the reload mech, as it greatly relies on the right amount of friction.

If you have any questions, please ask.

--- PRINTING --

I recommend to print EVERYTHING at 50% infill, though 30% will work for the bigger parts, the 50% will make them more rugged. I used a 0.4 nozzle on everything, 0.2 layer height.

I have included 3MF files from my Chiron to help with print orientation. There is a Parts1 and Parts2. You can rearrange the parts however you wish as long as the ORIENTATION IS THE SAME.

The ZIP file contains all 3MF files in case Cults wouldn't upload properly.

Print the bullets (BulletV2) on a raft that way the bottom tolerance isn't affected and also you won't need to keep them in a bag since the raft kinda holds them together.

Print the Mech as 99% infill, lines. It's a print-in-place object. Once printed, just rotate the bolt 90 degrees for assembly.