Questions pertaining to information already covered here will be ignored, so read this summary. If there is a caliber not covered here and you would like a wheel/droptube for, then PM me, otherwise this project is complete for now.
Original AmmoMike83 OpenBulletFeeder
These are a few modifications I made for AmmoMike83's open bullet feeder project.
Note, the part that houses the light barrier board is for the GEREE DC 12V Light Control Switch listed on the original thingie.
The mount requires a 1/2in rod with through holes on either end for m3 through bolts. The box relocates both the MBF power supply and the light barrier board to the side of the collator. You will need to remove the power supply from its case, I used a hacksaw and carefully sliced through all four seams. You will also need:
-25 #0 thread forming plastic screws located here https://www.mcmaster.com/99512a111.
-6 M6x1 bolts located here https://www.mcmaster.com/92095a248
-6 M6x1 nuts, I used these https://www.mcmaster.com/99908a101
-4 M3x.5 for the mount on the collator side, I dont know the length as I cut some I had on hand
-4 M3x.5 nuts, I used these https://www.mcmaster.com/90576a102
I used a T5 insert bit and the appropriately sized box end wrench to drive the screws that hold the box to the collator. Pilot hole size for the #0 screws is .046". I included a printable drill jig to drill the side of the collator for the correct spacing.
I used this coiled cable for the led and sensor https://www.amazon.com/gp/product/B00AB2L3MG/ref=oh_aui_detailpage_o08_s01?ie=UTF8&psc=1
- Added V2 8mm and 6mm drop tubes
- Reduced thru diameter of led/sensor holes to concentrate beam in smaller area for rifle bullet tips
- Added Drop Tube Bushing to push into hole so you dont have to reprint Drop Tube
- Changed entry and exit angle of 6mm tube to prevent lodging of rounds
- Removed V1 file
- Added ET-ZGMP38 body that has all holes for mods listed
- Added .308, .223, and .40/10mm wheels
- Added 6mm, 8mm, and 10mm drop tubes
- I have tested the turning plate/slide (whatever you call it) with 308 and 223. Heaviest I tested was 200gr sierra gamekings, but I think it will turn 220gr fine. It worked with 100% reliability. Tested with my wheels and improved turning ramp.
- Added v3 small spring adapter
- Fixes issue with rounds becoming lodged sideways in mouth
- Must be oriented with body
- Remove adapter from body, insert v3 adapter, visually check notch alignment with wall and re-attach body adapter
- Removed v2 file
- Added Pistol slide v2
- Requires 4 #0 thread forming plastic screws
- Uses adjustment knobs
- Now tested with 9mm, 40, and 45 with excellent results
- To adjust
- Screw lower knob out until no rounds tilt
- Screw lower knob in until nose down rounds begin dropping down slide
- Screw upper knob out until nose down rounds can drop down completely in wheel pocket
- Added 9mm wheel
- Added 9mm drop tube
- Added small spring drop tube adapter
- Added v2 spring adapters, large and small
- Added gripping surface to aid in rotation
- Removed fillet at part mouth and added beveled edge
- Removed v1 files
- Added improved turning ramp
- Fastens over existing body ramp with 2x #0 thread forming plastic screws
- Flips up to 180gr .308
- Will pull nose up pistol rounds back into body that have drifted outside of wheel
Dimensions can be adjusted by scaling in your slicer, or by reducing infill.