Round stock center drill bushing

thingiverse

this is a drilling guide bushing for round stock. The attached stl is for drilling a 2.5mm hole into 4mm diameter round material. I have uploaded a parametric Fusion file so you can adjust the two hole sizes and the overall body diameter. There are also provisions for (4) 3mm set screws in the material side if you find them necessary. When drilling you need to be aware of the heat generated if using PLA, something like ABS or other higher temp material would probably be better for longevity. The cross hole is there to allow drillings to escape, but also aid in cooling. you could also use it to cope the end of round stock to allow it to butt up cleanly to other round stock. I printed with 99 walls