Drill motor conversion kits - guaging interest

**typhoon_driver** · 5th August 2016, 13:57

Ewan, CNC routing and then manually drilling may be beneficial in some regards but the fact I have the printer sitting there with the material good to go is what is pushing me down this route. The fact that I can also very quickly and easy ramp up and down production is a big bonus too. Changes to the design are also incredibly quick and easy to put in place.

In terms of material properties, the nylon I'm using has the following spec when printed,

Tensile Strength = 8,100PSI
Modulus PSI = 72,932
Max Elongation at break = 31%

Up there with a good few virgin plastics.

Jack, I'm aware of the various metal fill materials. These however tend to be for asthetics more than function. The metal particles are generally suspended in a PLA type material giving no advantage over PLA which would be too brittle in this context. Oh and my hot end with happily go to 300 deg plus. My heated bed happily to 150 deg if need be. The joys of developing your own 3D printer over buying one off the shelf

I got a bit more done yesterday / this morning than I thought i would. So here is version 1.0 of the mounts in nylon *fanfare*

IMG_0719.JPG

Few things to note, the bolts need to be a touch longer. I used some that I had hanging around. Squeezing the gearbox casing in can be a bit tricky but there's enough flex in the material to allow it to do so. Had it running for a half hour on a power supply and there were no binding issues.

Onwards to some static loading tests to see when the mount fails and then dynamic tests. Working out how to make the testing applicable to the arena will be interesting.