Wheel Gun V1:

The wheel gun is a toy launcher that uses a bolt action firing method and a hand-turned 16 round magazine. I think its a cool and fun little project although the I messed up early in the process which left the Main frame not as printer friendly as I had intended, but a V2 is in development!

I recommend using PLA, PLA+ or PETG for all parts.

PRINT THE SHELLS AND BULLETS AT 98% SCALE or you may have issues fitting them into the magazine. (They have been prescaled in the print profile)

Hardware:

6 x M3*6 Bolt

2 x M3*8 Bolt

2 x M3*15 Bolt

2 x M3*20 Bolt

2 x M3*25 Bolt

1 x M3 Nut

3 x Mechanical Pen or Pencil Spring

1 x Compression Spring - OD: 10mm, WD: 0.8mm, Length: 50 mm

305mm Compression Spring Wire Dia 0.3 0.4 0.5 0.6 0.7 0.8 1 - 5mm Outer Dia 3 3.5 4 4.5 5 5.5 6 7 8 10 12 - 60mm Length 305 mm (aliexpress.com)

Assembly:

1. Insert the trigger through the slot in the top of the main frame, line up the holes and secure with an M3*20 bolt.
2. Place one of the pen springs into the whole behind the trigger, then push in the hammer latch and secure with an M3*20 bolt. ***(If done correctly the trigger and hammer latch should move back to position when pressed and depressed)***
3. Screw an M3*25 bolt through the hammer. While pulling the trigger, align the hammer with the corresponding grooves in the back of the main frame and push it in. ****(The main frame and hammer may require sanding/filing to ensure it moves smoothly along the rails)****
4. Insert the larger compression spring into the circular opening at the back of the main frame, then secure the main frame back plate with 2 x M3*8 bolts.
5. Ensure that the hammer and trigger mechanism are working properly by pulling back the hammer until it clicks into place. Pull the trigger and make sure the hammer slams forward.
6. Place the magazine latch into the groove in the magazine back plate with the longer tab pointing to the outside of it. Place a pen spring over the threading of each M3*15 bolt and then screw one into each side of the magazine latch. Make sure the latch can be pushed in and popped back out easily on the opposite side.
7. Attach the magazine back plate by sliding its tabs into the corresponding ones on the main frame. You may or may not want to secure them with 2 x M3*6 bolts if it does not hold with friction alone.
8. Place the magazine onto the main frame, then install the front plate so that the magazine is sandwiched in-between the main frame and the front plate. Secure the tabs with 2 x M3*6 bolts and the center with an M3*25 bolt.
9. Push the barrel mount over the barrel and secure it to the front plate with 2 x M3*6, then Place the muzzle over the tip of the barrel and super glue in place.
10. Snap the bullet and shell together.

Operation:

NOTE: The magazine latch is designed so that the magazine can only rotate clockwise, counterclockwise rotation could damage the latch. If you want to turn it counter clockwise, pull the magazine latch up so that is disengaged.

Loading:

1. Pull back the hammer & line up the hole in the back plate with one in the magazine and drop in an assembled bullet, repeat until magazine is full except for 2 holes.

Firing:

1. Pull back the hammer and rotate the magazine so a bullet is line with barrel.
2. Aim & Squeeze the trigger.
3. Repeat steps 1&2.

Unloading:

1. Pull back the hammer and tip the gun back so the rear is angled down. Turn the magazine clockwise and the empty shells should just drop out.