ploopyco / pnp-feeder Goto Github PK

just to make it all uniform and error free for other users besides those of us running the 3d printer side

I encourage you to set some standard for which way the magnets are oriented. This way multiple people who use these feeders can easily share them with each other.

I found springs on amazon that met the design specifications, but I am finding they are too weak to ensure a proper ratchetting. Can you either provide a source for the springs used or have an option for a stronger spring? its the last ~1/8" where the current springs are failing to meet the push forces required to drive the ratchet. I have ended up doubling the springs (twisting them together) to get a working setup on the first unit. I have not tried this yet with my PNP to ensure it works but the ratchet is reliable now

here are the ones I purchased
https://www.amazon.com/gp/product/B07D771QGH/ref=ppx_yo_dt_b_asin_title_o02_s02?ie=UTF8&psc=1

I see you run a grey and black color schema, curious if this is necessary, or if it was an arbitrary decision? I understand the value in keeping the two styles the same, makes total sense, just curious if I need to go buy grey and black PLA specifically or if other colors would work. I am thinking to have a coded system for different types of parts, say white body with blue top for paper taped resistors, white body with red top for paper taped capacitors, etc, etc. Not sure I will end up there, but I will end up using a lot of different components and sizes over time so having them somewhat organized can only help my cause.

Not sure what you're setup is, but I have my PNP on a plywood table and need a way to permanently affix the base plate to the table. Sure tape will work I suppose, but not the cleanest look and a lot harder to get say 5-8x2 grid established. About 4 screw holes should about do it nicely. Something to consider adding to the base plate

I found with my printer the ratchet wheel the inner teeth were too rounded and I tended to have 1-2 teeth where the ratchet would not catch to continue driving the wheel around (without any drag from tape yet even).

I modified the design to have these inner teeth be more aggressive to ensure a complete ratchetting. This required a minor trim to the advancement tongue with an exacto knife but works reliably now

Tape Advance Wheel aggressive teeth.zip

Is this a closed source project?

I have had problems getting the springs to sit in place so I have made a small keeper to glue in the holes at each end which has solved my problem.

OpenScad Code
$fn = 50; cylinder(1,d=5.6, false); cylinder(5,d=4.9, false);

If you render this in openScad and then save the STL. You get a nice little spring keeper. I'll see if there is a better way to add the STL and STEP files to this repo.

What are the dimensions required for the magnet. That information is missing from the wiki.