If you can’t stand the heat…
Ethan’s recent post about Nick’s experiments with turning down a print bed’s heat to avoid upper layer warping got me thinking… it seems to me that keeping a heated platform on throughout a print job may not actually be required. 1 When I’ve printed without heat at all, such as on an acrylic surface, I’ve only noticed ABS warping up to about 1cm or so. After that printed objects tend to just even out.
The GCode command for setting the heated build platform temperature is:
M109 S70 T0
Where “S70″ means heat the platform to 70 degrees Celsius. 2 I honestly don’t know exactly how this GCode works. It might force your printer to wait until the platform reaches a new temperature before continuing with processing more commands. While this isn’t a big deal while your extruder is heating up before printing begins, it could be problematic if you try to change your printer’s temperature during a print job. Even if this command doesn’t force the printing to pause while it changes temperature, there’s still the issue of how to implement it. You probably don’t want to shut off the print bed’s heat during a short print job or in a print job for an object less than 1cm tall. In any case, this is an idea and a question for the experimenters, hackers, and RepG/Skeinforge gurus out there. What do you think?
|Tagged with||platform, printing, repg, replicatorg, skeinforge, warp, warpage, warping||3 comments|