Drill_bits_cylindrical_case-BETLOG-002

thingiverse

I have a slightly different set of wood/mild steel drills to that which the original was made for, including an M12, so I needed a different hole selection but I liked the case shape and thread action. The body and cap of mine are different lengths but otherwise the same diameter and thread. They should be relatively interchangeable aside from the cap being a little short if you put mine on the original case, and bits may fall out and rattle around inside the cap if you use the original cap on my case. Photos: Left - original case Right - this Thing Works for me: 0.4mm nozzle, 0.32mm layers, 0.8mm perimeters, 10% triangle infill, supports, PLA Note: I used variable layer thickness; 0.32 in general and 0.12mm layers on the bevel at bottom of cap and case, and on the threads, however neither supports nor thin layers are really necessary, and can probably be omitted entirely, particularly if you use 0.2mm or smaller layers for the entire object. But even 0.32mm layers should be fine aside from slight overhang roughening on the underside of the threads, which should *not* adversely effect their operation....support scars may actually be worse than the tiny amount of scarring from minor overhang droop. Neither were a problem, and neither required retooling in my case. M12 M10.5 M10 M8.5 M8 M6.5 M6 M5.5 M5 M4.8 M4 M3.5 M3.2 M3 M2.4 M1.9 M1.4 Note: I print with a 0.4mm nozzle so I specify 0.4mm external perimeter width in Slic3r. To all of my models to date, typically a 0.4mm nozzle prints its external perimeters at 0.45 to 0.48mm by default, so unless you instead specify 0.4 you will probably find mated parts are too tight and bolt holes do not fit bolts. Specify 0.4mm external perimeter and you should get the results I do: perfect fit. Why do I do this? Because it makes the math and the modeling easier and more precise than needing to add 0.45 to 0.48...divided by two (0.225 to 0.24) to everything....0.4 divided by 2 is 0.2...and easier.