Search found 4 matches

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by mekada
Thu Sep 24, 2015 1:18 pm
Forum: Hardware
Topic: Top-down air pocket design?
Replies: 8
Views: 7207

Re: Top-down air pocket design?

Sidrana,
look at the sketch again. This is not a Reverse-Flex vat but an air cushion, which means no adhesion & peeling.
The big question is whether adding pressure in the cushion gives a more reliable layer height than just atmospheric pressure.
by mekada
Tue Sep 22, 2015 11:02 am
Forum: Vat Design and Construction
Topic: PET for vat floor?
Replies: 2
Views: 3838

Re: PET for vat floor?

Right now I'm stuck at the light source. I am waiting for a good deal on the Acer H6510 to move forward but reading all the issue with light evenness, I'm having second thoughts if it's the right projector.
by mekada
Thu Jul 23, 2015 11:38 am
Forum: Z-Axis and Tillt/Slide axis
Topic: THK z-axis assembly
Replies: 3
Views: 5240

Re: THK z-axis assembly

Top-down machine - I think one rail will be enough. I am using only one openbeam rail on my WIP machine.

Bottom-up - I'm not sure, but if suction is high and the parts are offset from the rail (say on the extremeties of the build plate), the moment load could go over the limit of such a small rail...
by mekada
Thu Jun 11, 2015 3:58 pm
Forum: Vat Design and Construction
Topic: PET for vat floor?
Replies: 2
Views: 3838

PET for vat floor?

Hello everyone, I am building a top-down machine and while looking for windows for my enclosure I came across this chart (look in tab "More Information") http://us.misumi-ec.com/vona2/detail/110302695820/?ProductCode=PYDA-270-270-3 Has anyone ever tried PET as a VAT floor? I don't remember...
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