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mshrg

Comandante grinder drill bit

by mshrg Dec 10, 2018
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Hello i really wanna ask. Does comandante shaft use a 5mm hex? I am planning to buy one, if its a 5mm hex then it will be nice. If it is a 5mm hex, can i straight up connect it to a powerdrill with a 5mm hex driver? Will it harm the parts? Pardon my rough language im not a science person, thanks for your time!!

Thanks for sharing! The Comandante takes quite a lot of torque when used for espresso - is your model still going strong? I am curious since I had problems with a double female print in polycarbonate for the same purpose (using a 5mm hex bit at the other end for use with an electric screwdriver). It worked well for some time before breaking. I have since made several modifications that did not last.

Honestly I have no idea how long this will last, made it just as a humble proof of concept, and returned using the Comandante as is with its hand crank.

If anything, I hope the print orientation I designed it in helps, as I imagine it would help more than using a different type of plastic, adding both is even better, I've heard wonders about nylon, sometimes stiffness is the enemy.

You might also consider using slower speeds on your drill, not only to possibly prolong the life of the bit, but to generate less heat while you grind.

In the end of the day, I think better this bit than the burrs, even if they have life warranty, or any of the mechanical parts of the Comandante, something gotta give eventually, and if I'd take this seriously I'd print several and keep them next to the grinder.

I'm interested to see what materials perform best, please keep me posted!