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what causes this?

Posted: Thu Sep 28, 2017 6:08 pm
by badbrando
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I had an issue with the vat and had to change it out. Figured everything would be perfect again after because the glass is spotless and the vat is new as well as the resin. What am I missing?

Re: what causes this?

Posted: Thu Sep 28, 2017 6:32 pm
by badbrando
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Re: what causes this?

Posted: Thu Sep 28, 2017 10:25 pm
by akgold
which machine are you using?
B9 1.1, 1.2HD, or Core 530,550

Re: what causes this?

Posted: Thu Sep 28, 2017 10:47 pm
by badbrando
Core 550

Re: what causes this?

Posted: Fri Sep 29, 2017 5:09 am
by Robert Howle
You have gotten smudges on the underside of the window of the vat or smudges on the surface coating of the vat. Are u oxygenating the vat surface after printing. I alternate vats every pint. Put them on a slope so the resin goes to one end (exposing the window).

Robert Howle

Re: what causes this?

Posted: Fri Sep 29, 2017 8:28 am
by badbrando
Interesting. No I doubt the vat surface is being exposed ever. I'll check the bottom of the new vat for smudges.

Re: what causes this?

Posted: Fri Sep 29, 2017 12:21 pm
by Robert Howle
The vat surface has to be re oxygenated after printing, so it has to be "exposed" to the air. I slope it and keep the lid on outside the Core machine.

Robert

Re: what causes this?

Posted: Fri Sep 29, 2017 12:21 pm
by Robert Howle
Send the pictures and your issue through the support portal on the web site.

Robert

Re: what causes this?

Posted: Fri Sep 29, 2017 12:29 pm
by Provin
has almost 95% that this problem is that you did not oxygenate the Duravat and did not clean the inner glass of the machine.

I can say that because it happened to me.

Re: what causes this?

Posted: Fri Sep 29, 2017 12:35 pm
by Provin
try to do this.

Re: what causes this?

Posted: Fri Sep 29, 2017 12:53 pm
by badbrando
Doing that now.

Re: what causes this?

Posted: Fri Sep 29, 2017 9:59 pm
by Robert Howle
The reason I asked about the window is just as I said.

This has happened to others and to myself. I started having the problem on one vat and it turned out I had touched the window underneath and had a couple of finger prints. Only use micro fiber to wipe the coating on the vat and use almost no pressure. The coating is pretty thin.

Robert Howle