Twist Drill Bit Handle Upsize Adapter

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With this adapter you can grip the drivers stronger. It could be for tightening smaller bits better or overall more strength when applying a force. I'd recommend plane-cutting with your slicer and printing a small ring for test first before deciding on what % scale up/down fits your handle. You can use the calculator here to input the current size, desired size and required % scale https://docs.google.com/spreadsheets/d/1zJlbit_jOXq7NhQWwnG7wl3nAqoBnDD0Xl6MfaueqgA/edit#gid=0 Adding the STEP file in case you want to adjust the thickness as well. Current design assumes handle size outer diameter is 10.20 mm and print inner bore diameter is 10.30, leaving 0.10 mm for fit tolerance. I had to knock this in with a mallet and I prefer this to be a tight fit, so it won't turn as I apply force to twist the bit. See my instagram for the video https://www.instagram.com/p/CLylZWwjsCg/   Printing tips: Bottom of the object has a tiny chamfer, print it standing upright on that side with a 3-4mm brim, should be fine.

About the author:
sdkks
Important update: I release and update models frequently. Sometimes new versions don't appear in the zip bundled by MMF as all objects require review and approval. If you look at "Object Parts" piece, you will see and be able to download parts which aren't included in ZIP yet. I only release my models after successfully printing them. If I'm not happy with the model or its basic function, I won't release it. Sometimes I put slicing screenshots with tips, keep an eye on description and comment on the model if anything is not clear :) Click on "website" to follow me on Instagram for latest free models and videos of the models. MMF doesn't support upload of videos.

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