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Build Your Own SLA/SLS A forum dedicated to helping you build your own SLA/SLS-based 3d printer 2014-02-21T22:46:43-04:00 https://www.buildyourownsla.com/forum/feed.php?f=16&t=121 2014-02-21T22:46:43-04:00 2014-02-21T22:46:43-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=121&p=924#p924 <![CDATA[Re: Generic Sylgard Substitute $37.00 at Amazon]]>
I put 1" blue painters tape around the edge of the glass to make a wall. I pour in the Sylgard, wait for it to level and for the bubbles to go away (or vacuum degass if I'm in a hurry). I bake it in a toaster oven @300deg f for about 15 min. After it cools I remove the tape. There is some adhesive residue left behind but since it isn't near my imaging area I don't worry about it. The slot in my frame is a little too big because I started with a thicker piece of plexi so I run a bead of aquarium sealer around the edge before I clamp the frame together. One of these days I'll get around to making a new frame that is tight enough for the Sylgard to act as its own gasket.

Another advantage to glass is that it is easier to clean off and re use. I had several pieces of Plexiglas that were ruined when the Sylgard failed (tore) and the resin attacked/dissolved it

Statistics: Posted by 258cj7 — Fri Feb 21, 2014 10:46 pm

]]> 2014-02-21T20:39:17-04:00 2014-02-21T20:39:17-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=121&p=923#p923 <![CDATA[Re: Generic Sylgard Substitute $37.00 at Amazon]]> Statistics: Posted by watsonstudios — Fri Feb 21, 2014 8:39 pm

]]> 2014-01-29T21:49:48-04:00 2014-01-29T21:49:48-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=121&p=479#p479 <![CDATA[Re: Generic Sylgard Substitute $37.00 at Amazon]]>
That's one of the reasons I switched to glass. Now I can vacuum de-air then oven cure it for 15min @300F (150C).

Statistics: Posted by 258cj7 — Wed Jan 29, 2014 9:49 pm

]]> 2014-01-29T19:29:24-04:00 2014-01-29T19:29:24-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=121&p=478#p478 <![CDATA[Generic Sylgard Substitute $37.00 at Amazon]]>
I have 3 vats that I keep coated. I use the oven method and I can get a usable coat ready in 2 hours. As long as you can keep your oven between 150 -170 deg. Any warmer and you could warp the polycarbonate - unless you use glass, of course.



The actual Dow Sylgard 184 on Amazon is $52.00.

Jon

Statistics: Posted by watsonstudios — Wed Jan 29, 2014 7:29 pm

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