Component Diffusion into PDMS

I recently encountered this article on Make Solid’s website: 3 Things Wrong With Your Vat

http://blog.madesolid.com/2014/03/3-things-wrong-vat/

The section that interested me was: 2. Component Diffusion into PDMS.

Their article does make it seem that leaving resin in the tray does irreparable damage to the PDMS layer due to the resin contaminating the porous PDMS.

Anybody have any thoughts on this?

That’s exactly my case.

I think many of us had failed prints (nothing come out from the platform) and that’s the reason why.

Too bad Formlabs didn’t told us why and I had to spend much time running circles.

CS