Cheap Roller Carriage for DLT-180(Chinese Kossel 2020) with 20x20 M3 mount (same as on common linear rails)

thingiverse

I wanted M3 screw mounts made specifically for the FolgerTech Kossel designed by jartz, but my Sintron Kossel Mini lacked the necessary mounting points. This remix adds M3 screw mounts in a 20x20 mm square pattern to make up for that deficiency.\nThe original design had a 20x20 mm square mount pattern, which left it offset 3.5mm from center due to its large size. However, my testing revealed that this didn't affect the performance of the printer, and even a slight rotation around the Z-axis went unnoticed during printing. I'm still exploring ways to perfectly center the effector without altering the fundamental design, but that's a low-priority change for now.\nUpdate 2016-09-02:\nI made some modifications to the roller in an attempt to eliminate the 3.5mm offset, and I'll be testing it out soon. The adjustable side may need additional structural reinforcement, but if you print slowly or with a lot of infill, it should hold up just fine.\nThe assembly process requires holding one nut in place by hand while tightening, so inserting this screw first and tightening last will cause the least amount of trouble. Since the nut doesn't support horizontal movement, tightening it before the others may cause it to skew during assembly.\nVersion 2 has only been assembled on paper for now, but I realize that releasing this remix contributes more to the community than waiting a few more weeks for testing. It may work perfectly or break on the first print, so proceed with caution and feel free to leave feedback if you do try it out!