Cracking sound at release from FEP film
Posted: Fri Apr 01, 2016 12:04 pm
Hi!
I recently built my own DLP based bottom-up printer using a FlexVat consisting of a original DuPont FEP/Teflon film (50um). There's no extra acrylic in between and just the highly tightened film itself. I have no special peel mechanism but only the Z-axis movement. My prints come out well after many failures. After reading in this forum I was able to fix the issues. However, I still have sounds during release which I think are strange.
Is is normal that the release from the printed object off the FEP film makes a kind of cracking sound? The loudness depends heavenly on the area to be released.
The film gets pulled up like 3mm before its released. I thought Teflon FEP film has a special coating so nothing adheres to it!?
Is that sound related to too much exposure or any other issue? I cannot find good videos on the net including great audio.
Might that become better with a peel mechanism like here: https://www.youtube.com/watch?v=-K0bb5_Pjkw (around 0:50)?
Resin: Fun To Do Standard Blend in black.
Object: http://www.thingiverse.com/thing:291323 (scaled down a bit)
Thanks,
radi2k
I recently built my own DLP based bottom-up printer using a FlexVat consisting of a original DuPont FEP/Teflon film (50um). There's no extra acrylic in between and just the highly tightened film itself. I have no special peel mechanism but only the Z-axis movement. My prints come out well after many failures. After reading in this forum I was able to fix the issues. However, I still have sounds during release which I think are strange.
Is is normal that the release from the printed object off the FEP film makes a kind of cracking sound? The loudness depends heavenly on the area to be released.
The film gets pulled up like 3mm before its released. I thought Teflon FEP film has a special coating so nothing adheres to it!?
Is that sound related to too much exposure or any other issue? I cannot find good videos on the net including great audio.
Might that become better with a peel mechanism like here: https://www.youtube.com/watch?v=-K0bb5_Pjkw (around 0:50)?
Resin: Fun To Do Standard Blend in black.
Object: http://www.thingiverse.com/thing:291323 (scaled down a bit)
Thanks,
radi2k