Error in printing : some models are lacking parts.

[Figouze]

Greetings,



I have elegoo mars for 1 month, no problem printing for the past month.

Now, I have a problem printing.



Some models lacks a limb.








So, I change the resin, clean the bath and I adjust the axe Z with elegoo menu and a paper.
I have changed the support from thin to medium.




Now, I print another time with some models and I only have two of them. No resin polymerised in the bath and only two are well printed. The other are nowhere !
I




These is exposition time :

Mayer height 0.05
Bottom layer count : 8
Exposure time : 8
Bottom exposure time : 60
Bottom lift distance : 5 mm
Lifting distance : 5mm
Lifting speed : 65 mm/s
Retract speed : 150 mm

Resin : elegoo grey.
Thank you for your support.

[cliffyk]

remove the resin vat and "print" the models, Observe the LCD shutter (from an acute angle--do stare directly into the UV lamp) to see if it is behaving as it should and passing a full image of the layers to be printed.

Grab and post a photo of what you see if you can...

[Figouze]

The LCD was good.

I have found the problem. Some grey resin was under the fep, avoid light to come to the resin.

[cliffyk]

The LCD was good.

I have found the problem. Some grey resin was under the fep, avoid light to come to the resin.

This of course means, that unless you spilled it, there is a hole in the FEP--you can use clear packing tape as a temporary fix...

[fromFDMtoSLA]

does the resin stick to the LCD? can you remove it?

[cliffyk]

does the resin stick to the LCD? can you remove it?

Scraping lightly with a new single edge razor blade held at a very acute angle will remove it very easily and with little effort.