Please help. What would you suggest to avoid contamination from the other head while dual extruding?
Originally shared by David Herrera
Please help. I am trying to do some dual extrusion drawings, but my tests end up with contamination from the other head. Any suggestions? (See pic)
Rep2X with default standard quality settings except for layer height, 0.15mm. Build plate is nicely leveled. There’s a bit of offset in Y b/w the head, but that can be fixed by aligning them.
My memory is kind of bad and I just got done drinking, but I think my one acquaintance on here told me he has custom gcode for hotend switching which will lower the temperature of the other nozzle and retract a ways. I have suggested to him before that he try doing the thing where he draws perimeters that are half as high as the infill layers (it draws perimeters twice). I wish you luck.
Nat, thanks. I think this problem may have 2 parts to it. One is that the 2nd head picks up a bit of resin that has already been layed down and smears it somewhere else. The other part seems to be the oozing of the head that’s not printing. Your suggestion may help with the later, but i’ll have to find a way to avoid the pick up of resin somehow.
Oh. There should be a setting in a few of the slicers for not crossing over previously printed spots. Another on for lifting the nozzle during moves.
Thanks again for the tip. One thing that has already helped was to simply rotate the object. That way the other head doesn’t go over some areas until they have cooled longer. I’ll look into the slicer’s settings too.
