For a very simple reason: 3D printing does not need rigidity. (Well, it needs some, but almost none compared to milling work). If you want a combination machine, the drive type (belt vs. screw) will be at least as big problem as the frame rigidity. The belt drive lacks rigidity but a rigid screw drive is very slow. X( https://reprap.org/forum/read.php?1,177737,177737#msg-177737 Mon, 15 Jun 2026 10:44:36 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,177737,177737#msg-177737 https://reprap.org/forum/read.php?1,177737,177737#msg-177737
If you want a combination machine, the drive type (belt vs. screw) will be at least as big problem as the frame rigidity. The belt drive lacks rigidity but a rigid screw drive is very slow. X(]]> archarank General Sat, 19 Jan 2013 04:41:35 -0500