10/12/2022: Uploaded the correct nut and lead. The first ones were mirrored.
The drill was inspired by push drills such as this one by LoboCNC: https://www.printables.com/model/132326-push-drill-with-adjustable-chuck
The chuck is based on this one made by BManx2000 with a slight modification to the shaft: https://www.thingiverse.com/thing:2625085
This is my third and best iteration of the model.
BOM:
2x 608RS Ball Bearings (8x22x7)
2x 693ZZ Mini Ball Bearings (3x8x4) (You could print a bushing of the same size instead)
Misc. Screws (I used what I had on hand, mostly M2 and M3)
Spring or elastic band (The stronger the spring, the stronger the drill but it makes it harder to pull. Experimenting is key. I don't have a particular model to recommend as I modified a spring I found)
Printing:
PLA (mostly)
PETG (I used PETG for the chuck as it gives a better grip on the drill bit, PLA should be fine though)
I printed with 5 walls thickness with a 20% infill, but these can be experimented with.
Supports are needed for most parts, it will be obvious.
Consider buying me coffee!
https://www.buymeacoffee.com/franksoul
The author marked this model as their own original creation.