nanoDLP

Hello,

I have a weird behaviour during printing: at a certain Z level (which seems random), the thickness of the part is increasing during a couple of layers then come back to normal.

Here are some pictures which show the pb:

https://drive.google.com/open?id=1Dlf3c … dhZHxMDm3p
https://drive.google.com/open?id=0B-v7r … VOOHNNcWNN

It is like if the exposure time was increased during a few layers before coming back to normal.

I must point out that I did not have this issue before. But after a few months break in my printing and a lot of changes (build, printer architecture, FEP film, etc), I can't figure out from where that come from..

It is maybe linked to the resin level in the tank but I don't understand why.

Any clue of what is going wrong?

build #1827
Rpi3 + Stepper driver Reprap V2.3 GPIO
DLP bottom up design

Burn in layer: 2 layer, 0.1mm 8s
Normal layer: 0.05mm 4s
resin: Makerjuice SF green

no jump
no low quality layer
no dynamic calculation
no mask
no infill
pixel dimming: checkerboard 50% / 3 Pixel / 0 layer skip (but same behavior even with dimming off)

Last edited by JMG138 (2018-05-08 09:47:39)