I've got to admit, the VAT design on the B9 is a significant annoyance that has had me put my B9 up for sale a couple times and if it weren't for the horrid resale value of these, it would have been gone.
Now that that's off my chest, I'm really trying to learn how to use this thing now, but the VAT is again getting in my way.
When I bought the unit a couple years ago I bought 3 VATs. One of them had distortion in the "glass" right off the bat and not knowing any better, I didn't get it replaced. It's been a while now so I forget what happened, but I think the glass separated from the VAT so I threw it away before resin had a chance to escape and mess anything up.
The second VAT, the PDMS in the overflow area immediately lifted up, allowing resin to get underneath. Again, newbie, I just cut it back so most of the lifted section was gone and proceeded to use it. I've learned that once resin gets under the PDMS it works its way onto the glass area. Cured resin under the PDMS on the glass... into the trash.
My third VAT, which I've replaced the PDMS on (I'm a PDMS newbie since I hardly used this machine the first 2 years), I had the same problem as the second one, except the PDMS lifted after I replaced the PDMS, not from the factory. So, resin on the glass but not cured... well, this plastic is soft so in cleaning the inside, I've got some very fine scratches so I used some plastics cleaner/buffing compound for fine scratches, etc. There are still fine scratches.
Thanks if you've read my ranting this far.
So two questions, the first of which is there any third party VAT that's better than the plastic one? I'm thinking something with real glass and perhaps even aluminum? These plastic VATs just seem far too fragile, particularly for something that costs $60+ a pop.
Second question is, how much (if any) fine scratches can be tolerated and still get good prints?
Thanks in advance.