works great too I just did mine. until I screwed it up.
first I drilled a peice of 1/8th inch aluminum and then pinned it to the blue dam Kirk supplies with the new vats (in the pictures). It was successful the other day forming the trough like Mike's I beam but unfortunately I was using my old method of leaving on the heater over night and I had all kinds of problems with the pdms having weird swirls and where ever I was removing bubbles it left pock marks in the surface. Now, although the pdms looked absolutely perfect like it did yesterday, when I put it in the new "easy bake oven " (oster oven) from walmart It showed all of the marks where I twirled the bubbles out again not to mention a few others. I don't get it I saw nothing but a smooth pristine surface when I put it in the oven. I included a picture but I don't know if you can see them.
I broke down and bought an oven at Wal-mart for 88 bucks like Kirk shows in the video and man that makes short work of the process.
only problem is I used the new dam in the oven and it didn't like 275 deg. it shrunk so now it doesn't fit.
DON'T do that.
It's great idea for sealing bad idea to not remove it and put it in the oven. My bad. I kinda wondered if it would make it through the process.
I was going for the straight edge cut off the meniscus without the I beam method this time.
I had made the Blue dam fit a piece of 1/8 aluminum by drilling and pinning it. it leaked around the bottom corners a bit maybe why it looked all swirly because the pdms was moving.
Me and pdms don't get along.
back to the drawing board and do what works.
P.S. I notice also that the PDMS on the new vat comes up very easily from the anodized surface but if it flows out away from it I am reasonably sure it will not be a problem.