I am running test prints on a new Sainsmart Kumitsu KL-9, a large hobby-market resin printer with a price/volume hard to beat.

I had two of the test prints detach from the printing plate and fall into the vat. Standard settings are in place:

Chitu Slicer settings

I am using a pitch black Elegoo resin. Does black resin generally require thinner slicing, or longer exposure times? The bottle recommends 60s and 8s, matching the default settings for the printer...

Suggestions appreciated!

  • 2
    $\begingroup$ Transmission in the visible light and UV can be different. If they recommend the same exposure, why doubting it? or did you test and find issues? $\endgroup$
    – FarO
    Nov 12 '20 at 12:46
  • $\begingroup$ Indeed. A few layers attach to the printing plate, and a few layers attach to the transparent bottom of the resin vat. occasionally, there is evidence of the print splitting at a layer (print "slipped" on the XY plane). $\endgroup$
    – 0xF2
    Nov 13 '20 at 11:33
  • $\begingroup$ Elegoo updated the specs on the Amazon listing to 13-15Seconds and 70 seconds (different from what is listed on the bottle itself), but that still does not work right on a Kumitsu KL9. The mystery continues. $\endgroup$
    – 0xF2
    Nov 18 '20 at 17:17

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