EdgE wrote:Well, I tried adhesive FEP already in 2013:
Here I created one PolyStyreen resin container, with 3 different sections:
* No coating
* Adhesive FEP foil
So the results I found so far, working with this 'adhesive FEP':
* It works better then no coating (on a PolyStyreen floor).
* It's more durable then PDMS (because of the fogging issue of PDMS).
* Transparency is worse, in comparison with the PDMS layer or without anything.
* It's still very easy to damage when having a wrong build.
(flat part, cured on this FEP, trying to get this off with a knife, will very easily scratch the FEP)
* Do to the fact, it's "adhesive", your intention is to attach this foil to something (glass/plastic/..)
So when releasing the part from the floor, you still have this 'stupid' strong layer below.
This will cause the high tensile force, you need to release the part (and brake it).
So actually you want to stick this FEP to something more elastic (an other transparent foil ).
But when you want something elastic, why not using FEP without this adhesiveness?
So from my point of view, it doesn't make sense to use 'adhesive FEP' at all.
Most important is still the building speed.
So everything which makes the vat floor less transparent (like adhesive FEP, which you can see in the link above), will make your printer slower.
I'm trying to make a full list of FEP foil suppliers here: http://khwelling.nl/3d.dlp_printer.php#pillow.
(So if there are more suppliers, let me know.)
I read your writeup, very nice work!
When you say :
Lowering the retraction speed towards 50 [mm/min] gave much better results.
Is this the "lift speed, OR the retraction speed back down INTO the resin"