About

This is designed for Ryobi grinder with 30mm center to center holes on the lock ring. 

I never had the original tool and grabbed this one mainly to stop worrying about battery on my Dewalt. 

Printing

I used M4 x 10 socket cap screws. Longer would work too 

The holes are small enough to thread the screws in, if your printer isnt dialed they might be a little tight to get started 

I used 3 walls and 30% infill

PET-CF was used for the example but I assume any filament would be suitable. 

If you need adjustments let me know