Continuing on from -
After upgrading to Perform 1.8.2 I was hoping to see some improvement. Sadly so far this is not the case.
@KevinHolmes (I think) picked up on something that had me thinking. It was his observations that the porosity often occurs on the support side, especially where the supports are closely clumped. I more closely examined the clear cavity mold piece and this seems to be the case.
I think this happens for the exact same reasons why we see it on @KevinHolmes cross test piece. Regardless of orientation, the supports are always printed vertically and therefore the laser flare is part curing the same area of the resin tray whilst the support is been printed.
Clump a bunch of support together, the problem multiplies and there is a greater chance of part cured resin causing porosity in your print. Similarly, the taller the supports are the greater the problem.
I designed a flat plate (100x80x3mm) to test this theory. I orientated at 45 degrees to the build plate and then purposely grouped the support as seen below -
Both tests were printed at 0.5mm layer heights, in V1 FL Grey Resin
I strained the v1 grey resin and printed it in the “correct orientation” with the longer supports closest to the hinge.
I rotated it 90 degrees and printed it with the long supports facing the back of the printer.
Because my laser flare faces to the rear of my printer, I was expecting the 2nd test to be have more of the porosity. This wasn’t the case, it was the first test piece came out really bad, covered in porosity.
I think was because the longer supports were close to the hinge and there was less chance for the part cured resin, caused but the laser flare, to get washed out of the way during the peel processes.
Even this morning, 2 days after the test, there is still resin seeping out of the porosity.
Test 1 Results
Test 2 Results
I’m going to print the same tests in FL V2 Clear and then printed is going to have to go back as I don’t see what else I can,do