I’ve been getting layer lines on my prints with flat surfaces, here’s all the stuff I’ve tried to fix it.
I’m using the Moai 130 with the FEP vat and the “Recommended Moai with FEP vat Firmware setting” from http://wiki.peopoly.net/doku.php?id=moai:firmware
All prints are done at 40u with the moai_calib_2 profile with the Peopoly heater turned on.
In this thread @ad_fontec links to his diagnosis of problems with layer lines. TLDR: the heater turns on and off which messes the print up. It’s warm here at the moment so I thought I’d try running a print without the heater turned on:
Lines are present.
I’ve modded the Moai with Project Tripod, though I may have messed it up which could cause the lines, so I detached the build plate arm from the cross-beam & ziptied the beam to the top of the printer so the z-axis can move without the tripod, just in case it’s causing a wobble:
Lines are present.
I read more about the various settings, so though maybe turning off z-follow might help as this is a small model without much suction so why would you move the z-axis more than you have to?:
This looks a little better IRL, but lines are still present.
This is not my first resin printer. With previous ones I noticed horizontal banding caused by errors in the model. This model is clean but has been hollowed in Mesh Mixer with drainage holes placed manually in Blender, which might have created some crazy geometry, so I printed it without the hollowing:
The print still has lines.
It’s been noted elsewhere that the vat can move around in it’s holder - mine’s tight vertically but can shift horizontally with a bit of force - I shimmed the vat in place by sticking a 2mm allen key between it and the frame and printed again:
Still got lines.
At this point I noticed I’d actually been using some of the settings for the PDMS vat (with the exception of Z Reset Position and PM Reset Position), so reset them all to be for the FEP vat:
Nope, still has lines, though looks a little better.
I turned off z-follow again but kept all the other FEP settings:
Someone on the FB group mentioned that lines seem worse on faces towards the door/back of the machine, and the face in all the photos is indeed pointing towards the door, so I tried rotating it by 45 degrees so the side photographed faces the front right corner:
Nopenopenope, seems to have made it worse.
Aside from that nothing I’ve tried seems to have made much of a difference.