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Yeah, I think a dual Volcano nozzle with a combination of 0.4 and 0.8 nozzles may do nicely. Two nozzles gives me access to the entire bed on the...
I modeled the hot end based on the E3D Cyclops, but I think ill go with dual Volcano nozzles in the same heat sink. With a 0.4mm nozzle for...
20x16 is just over 500 X and 400 Y, but some of the X is not reachable by the head.
Trust me, if I were to get a 20"x16" piece that's 1/4" thick, it would be at least $150. The .040 thickness is thin at 1mm, but its what others...
I managed to find a piece of .040" (1mm) thick PEI for a print surface, 24" x 24" for about $52: http://www.zoro.com/i/G2846611/ It'll go on...
Good point!
Front view of the assembly, with the setup mirrored on the back side of the frame. I'll probably have to design some kind of a printed part to...
I think I will go with these - 3.5 pounds adds up to 14 pounds of lift if I use 4, and it leaves me with a spare. :)
Yeah, what Tom said. :) It would be a little different if the springs were compensating against a load that moved quickly and often - such as on...
Upper rod assembly with bronze bearing (orange), plastic printed insert (green), and constant-force spring: [ATTACH] Full assembly: [ATTACH]
How about a video? [MEDIA] That is a different kind of spring - a loose-wound spring that is tightened when the tape spool is pulled, and...
I like that idea - the larger springs have an inner diameter of about .73" / 18.5mm, so I would have to find a bearing with an ID of 8mm and an OD...
Are you sure? They're tight wound, so they have to rotate as the free end gets pulled out. The spring force comes from that rotation, or so I...
I did some expected weight calculations - I weighed a 500mm piece of 20x40, and it came out to be just about 0.75 grams per linear millimeter. So...
I think I'll go forward with the GT2 belt arrangement - as nice as the PosiDrive system is, it's not metric. Belt-driven 16T/32T will give a nice...
1.8 degree stepper with 1/16 stepping, and a 16 tooth pulley would get me 10 micron. If I put a 32T pulley on the 8mm driving shaft, and a 16T...
Also, the CRAMPS board for the BBB arrived yesterday: [ATTACH]
Not cheap, though - the PosiDrive open-ended belt starts out at around $9.77 per foot for either the Aramid Fiber or Stainless Steel cores:...
There's also these: http://sdp-si.com/product-announcements/posi-drive-belts.htm
The plan is to drive only the lower rod with 20T GT2 pulleys and a short closed loop belt. Rostocks use a non stretch woven fishing line and...
