First print adhered to screen

Updated 7 days ago in Hardware
6 on November 12, 2018

Well, I tried my first print and the only result was a few layers of material stuck to the screen.  As this was the very first print, with a brand new screen, new, freshly opened resin, there is no way that “At the beginning of the printing, there is solid resin residue on the build platform surface that causes damage to the resin tank film” as mentioned in the troubleshooting section.

@Uniz, is there a fix for this? If not then I will expect you to send a new working resin tank to replace this one.

 
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0 on November 14, 2018

Hi Art, Could you take some photos about your problem?

What’s your first printing? Did you use UDP mode or natural peeling mode?

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0 on November 22, 2018

Hi, i have the same problem, first print and there are  same layers stuck to the vat construction platform…..how i can solve this??? my printer is slash pro….

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0 on November 22, 2018

My initial tries were similar with the zUDP gray.  I did have some small bumps of resin on the build plate.  My 4th try with gray I got a successful print with the zUDP gray.  I have tried several times with orange and nothing sticking to the build plate yet.  I have inserted the screen grabs of my successful zUDP Gray below.

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2 on November 29, 2018

As I posted elsewhere…I just got this thing… A Slash OL that I foolishly bought 11 months ago,,, The VAT film or  proprietary polymer is similar to FEP. It should stretch as the object is pulled upward and as it stretches it releases. Well I have found that the Polymer is NOT releasing! On further inspection I see that UNIZ attached a thicker clear film UNDERNEATH the VAT on to the polymer of the VAT. A film that does not come off the polymer. And before you write the comment…  I DID remove the LCD protection film! So this film which is attached to the polymer of the vat underneath (which I suspect is a mistake) sticks to the glass of the LCD which in turn won’t allow the polymer to stretch and release. Even the Wanhao D7 had better QC then this!

on December 3, 2018

If you read the Thread about How to level the bed in the Getting Started board, you will see the REAL problem, UNIZ uses a vacuum to draw the polymer film on the vat flat against the LCD glass. This makes the upward stretch required for a reliable release from the film impossible. This is not currently a viable 3D printer.

7 days ago

@ Steve – I notice you are not using UDP mode. The exposure times need adjusting for zUDP resin in Natural Peel mode. There should be some info provided about this by Uniz but I’m not sure where!

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