HTL- if you still see these posts, I'd love to learn if this test was repeated and with what results vs. what control experiment. Please don't feel defensive just because other members are testing your hypothesis along with all the other theories posted to this lovely community.
Statistics: Posted by salukikev — Thu Oct 30, 2014 1:26 am
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Given the information shared so far, I will probably modify my practices since I now frequently leave the resin in the vat between prints.
Statistics: Posted by sitzme — Mon Mar 31, 2014 12:04 pm
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I read the paper on PDMS swelling based on solvent-type (http://gmwgroup.unix.fas.harvard.edu/pubs/pdf/899.pdf) and think that resin/monomer swell has some merit (acrylate monomers migrating into the PDMS causing stickage) and subsequent de-swelling using IPA / vacuum chamber could be the key factor.
Statistics: Posted by sgraber — Wed Mar 26, 2014 12:52 pm
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Thanks for sharing your thoughts & experiments about this subject.
I also read your yahoo post: .
This is also the reason, why I started a post for creating a list of vat-solutions, which might work, in the hope, some other solutions will popup.
Since I don't have either vacuum-unit or pressuriser-unit, it's very hard for me to repeat your tests.
I was thinking in the opposite direction. Since I didn't print for weeks (because of this issue), my Sylgard vat hasn’t seen air for weeks now. So I'll defiantly try to print with this oxygen-less vat and (hope to) damage it even further...
I also like to ask you, how necessary it will be, to pressurise the vat, or just 'vent' the vat in normal atmosphere. Is there a difference? Or how big is this difference in 'number of reusing' the vat again?
I was also discussing this topic with a friend, while we both counter the same issues. (In the end, we all do!)
The bottom-up process is very nice, but not robust at all...
So we also thought about some solutions (wiper), which could be helpful, for getting air in.
(Something like: every 10 exposures, wipe the floor & wait 10 seconds for getting air in.)
Does anyone know, if this oxygen-issue also counts for FEP/Teflon sheets??
Statistics: Posted by EdgE — Wed Mar 26, 2014 8:13 am
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Clinton
Statistics: Posted by Finhead — Sat Mar 22, 2014 12:20 am
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Here is the write up: http://projectsinterestsandetcetera.com ... -could-be/
Statistics: Posted by HTL — Fri Mar 21, 2014 11:56 pm
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