3DMonstr: Large, quad-extruder 3D printer on Kickstarter

[3dm]

Hi, Geoff,

I've spent a little time thinking about this. I think that with a heated bed an arm that is only 15mm tall might end up being straight to much larger size than what you currently do. I've already printed an object to 13" just on the 12" prototype that we have (it was printed diagonally) - see the snakes: http://www.flickr.com/photos/3dmonst...n/photostream/ the larger snake is 13", the smaller (printed earlier) is 5"-ish and is there for comparison.

Would you like to send me a test design that I can try on my prototype machine in PLA (even w/o a heated bed)? I'm curious to see what will happen.

[Geoff]

Hi, Geoff,

I've spent a little time thinking about this. I think that with a heated bed an arm that is only 15mm tall might end up being straight to much larger size than what you currently do. I've already printed an object to 13" just on the 12" prototype that we have (it was printed diagonally) - see the snakes: http://www.flickr.com/photos/3dmonst...n/photostream/ the larger snake is 13", the smaller (printed earlier) is 5"-ish and is there for comparison.

Would you like to send me a test design that I can try on my prototype machine in PLA (even w/o a heated bed)? I'm curious to see what will happen.

That would be great!

This quad arm takes me pretty much exactly 1.2 hours to print. I print them at 25 percent infill, obviously higher will yield a stronger arm but the idea is to keep it as low as possible, but without warping.
When I print them, they are dead straight, when I pull them off however, even after a full cooldown, the flat section will warp slightly. PLA didnt seem as bad, but since the ABS needs heat and I really sort of need to print them in ABS :/ PLA is no good even for small crashes with a quadcopter, ABS is alot more forgiving.

http://www.mediafire.com/download/3h...u3/quadarm.zip

The arms in question are like these: