I bought some Aluminum slide carriages off a Kossel 2020 or Kossel Mini, to replace the crappy plastic ones that come with the printer. On these, the belt adjustment mechanism on is absolutely a trillion times better than the OEM Anycubic ones, they make noticeably less noise, vibrate less, and just look and feel better. Only problem is, as the mount points for the effector rods are centered on the part, rather than mounted on the top. I think this is throwing off the metrics of the whole effector, and it’s making it impossible to level my bed, as it now thinks my bed is concave. I think in actuality, the effector is moving in a convex motion, because I wasn’t having this problem before. The bed will level at the towers, but not at the center. The bed is a flawlessly level piece of glass. Pictures of the carriages are attached. I was told to change a few things in the config.h, and my results are below. DELTA_SMOOTH_ROD_OFFSET in Marlin does absolutely nothing to correct the “concave”. I’ve set it to extremes, and literally nothing about anything changed. DELTA_RADIUS is defined as seen below, so I don’t really know if I should change that to a hard number from the equation that’s already there: #define DELTA_RADIUS (DELTA_SMOOTH_ROD_OFFSET-(DELTA_EFFECTOR_OFFSET)-(DELTA_CARRIAGE_OFFSET)) I noticed in there that there is a DELTA_CARRIAGE_OFFSET parameter. Would this help me at all? If so, should the number be higher or lower? I set it to 0 and it didn’t seem to do much. Any help would be great. I’m probably putting my old carriages back on for now, but I really want to come back to this, because, if nothing else, this is something people should take into account while calibrating.
