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Cut out a pin mounting slot in your model using the provided model as a negative part -- see description
If you attended 3DPrintopia 2024, MRRF 2024, or MRRF 2025, I may have given you a pin that I made with this glueless pin mounting slot design!
✨Design story✨
I made hundreds of mountain pins to hand out at RMRRF 2024 that were flat prints that I super glued pins on the back, but that process was messy, stinky, and required drying/setting, and the results weren't very reliable – overall, an experience I wanted to improve if I was going to continue making pins to share at the RRFs!
After some brainstorming, messy CAD work and a handful of prototypes, I landed on this pin mounting slot design that fit the 20mm pins that I bought from Amazon. The first iteration I used were not pretty – they stuck out the back of my donut designs for MRRF 2024. A few months later, I had an improved version and made hundreds of mini MakerChip pins to share at 3DPrintopia 2024 – it was so much better than the original glue option in every aspect!
✨Included files✨
STL
I converted the pin mounting slot design into a model to be used as a negative part. Position this on your model where it needs to be cut out – it should be on the top or bottom layer, rotate as needed (see 3MF for examples).
3MF
I've set up test pieces to check the fit – for the pins I purchased, I needed to test scaling only in the y dimension, so the test pieces I've included have the original size, 95% scale, and 90% scale.
I've also included the tests in both face up and face down orientations – I didn't need to use supports. Use these for reference on positioning and fit testing – the bridging can affect the fit, so make sure to test as needed!
✨Future projects✨
I'll be adding some ready-to-print badge designs and support for more pin sizes!
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💖Karen
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NOTE: I reordered three more packs of 20mm pins to make more mini MakerChip pins for MRRF 2025, but the pins were a bit smaller and weren't compatible with my prints! Learn from my mistake – make sure you test a few pins before printing a bunch! Luckily, just scaling down the y to 90% fits this batch of pins!Google Sites
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