Forstner Bit Depth Stop (Imperial)

Sturdy depth stop for large forstner bits.   While I did not remix tto's model, I was heavily inspired by his design.  I found that the larger depth stops flexed too much for my needs.  Additionally, it was too easy to overtighten and strip out the pure plastic screw holes.  I added recesses for 3mm nuts.  I used 3x10 scews to draw the nuts down into the recesses.  Yes, I get the irony of using metric hardware for an imperial bit size.  I have a lot of small metric screws on hand left over from other projects.

I have Rockler branded Forstner bits, so the collet is sized to fit the bits I have.

I used OpenSCAD to model the design.  If anyone wants the design file, let me know and I will post it.  I will need to add a bunch of comments to the scripts so it makes sense to other folks.   Design will work for either metric or imperial.

I only needed a big depth stop for now, but I can add additional sizes if needed.  I will need three measurements if you request a new model, circumference of the bit, height of the bottom portion with the cutters, and the shaft diameter.  

Print Settings
0.25 Structural [I needed it quick, not super pretty ;-)  ]
Generic PLA
Yes to supports