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Bed vs. Foil adhesion with new Prusament Resin  

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M.J. Caboose
(@m-j-caboose)
Trusted Member
Bed vs. Foil adhesion with new Prusament Resin

Hi,

Since I ran out of the old stock PRUSA Touth Resin, I switched to Prusament Resin (in this specific case in the color sandstone) ...

I emptied half a bottle in the meantime but wasn't able to get one good print with my SL1S. I ran 4 trials up to now.

1.) only sticked to the FEP foil, Print bed was empty (2,4s, 25s)
2.) mainly sticked to the platform, but was loose at one corner so I had no good surface due to layer jitter (reduced 1st layer exp. time zo 18s)
3.) only sticked to FEP foil, Print bed was empty (increased 1st Layer exp. time to 30s)
4.) only was slightly hanging on the print bed and was wabbling around (2,1s, 20s)

I was a kind of disapointed and forgott to take pictures of the failurs ... sorry ...

I have the impression that the new resin seems to stick better to the FEP than to the aluminium platform. 😥

The printer seem to work fine though .. I used some other brand resin and everything was back to normal.

In addition the surface of the printed model / structures is quite sticky ... almost like flexible resin.

Is there the possibility that I got a bad bottle or is anybody of you experiencing similar issues? Maybe you have figured out some cool settings where you get good results out of that resin type.

Any hints would be appreciated ...

Armin

Best Answer by sylviatrilling:

I have been printing with Sandstone just fine on my SL1S. Before that I used a whole bottle of Prusament Yellow. I was getting staircasing with the Yellow so I reduced my exposure time very low - 1.6 and 25 for initial layers. I continued using this setting for the Sandstone. 

- Made by me -

Posted : 12/01/2022 2:22 pm
sylviatrilling
(@sylviatrilling)
Honorable Member
RE:

I have been printing with Sandstone just fine on my SL1S. Before that I used a whole bottle of Prusament Yellow. I was getting staircasing with the Yellow so I reduced my exposure time very low - 1.6 and 25 for initial layers. I continued using this setting for the Sandstone. 

Mk3S+,SL1S

Posted : 12/01/2022 2:38 pm
M.J. Caboose
(@m-j-caboose)
Trusted Member
Topic starter answered:
RE: Bed vs. Foil adhesion with new Prusament Resin

Ok ... thanks ...

I will make sure my plattform and vat is clean, do another patform calibration, just to be sure, and use your settings ... Then I will give you an update (hopefully with pictures from the success ... of fail) ...

- Made by me -

Posted : 12/01/2022 3:18 pm
M.J. Caboose
(@m-j-caboose)
Trusted Member
Topic starter answered:
RE: Bed vs. Foil adhesion with new Prusament Resin

Ok ... the prints came out this time ... But I am far from impressed ...

I can see some severe layer inconsistencies, some resin sweating and also some discoloring after curing (discolering does not show up on the images very well, but looks a kind of light sunburn) ...

 Layer inconsitency 1

The settings I used were:

  • Resin: Prusament Tough, Sandstone
  • Layer height: 50µ
  • First layers exp. time: 25s
  • Layer exp. time: 1,6s

Since I am convinced of Prusa's quality levels I assume I just got a bad bottle ... I have 8l Prusament Resin at home and 3l on order. I hope this is no waste ... The next days I will use one or two different colors or batches so see whether this sutuation improves.

- Made by me -

Posted : 13/01/2022 9:29 am
sylviatrilling
(@sylviatrilling)
Honorable Member
RE: Bed vs. Foil adhesion with new Prusament Resin

Glad you at least got a print. I'm not getting any of those issues. except I think I got resin sweating on one print only. I haven't heard the term but I got some small spots that are much more shiny and give the illusion they are still wet. Is that resin sweating?

Mk3S+,SL1S

Posted : 13/01/2022 1:10 pm
M.J. Caboose
(@m-j-caboose)
Trusted Member
Topic starter answered:
RE: Bed vs. Foil adhesion with new Prusament Resin

Well .. frankly ...

I don't know whether this is the correct term for resin ... I know this kind of phrase from other areas like gluing and injection molding for example ... And you immediately recognized what I mean ... so it can't be that wrong 😊 

I will update as soon as I tested other colors of Prusament Resin ...

 

Posted by: @sylviatrilling

Glad you at least got a print. I'm not getting any of those issues. except I think I got resin sweating on one print only. I haven't heard the term but I got some small spots that are much more shiny and give the illusion they are still wet. Is that resin sweating?

 

- Made by me -

Posted : 13/01/2022 2:18 pm
SQS
 SQS
(@sqs)
New Member
RE: Bed vs. Foil adhesion with new Prusament Resin

Some MSLA users are using PTFE lubricant on fep foil. I am trying it at this moment with different resin that sticks to well to foil. Even with  low speed of movement.

 

Posted : 02/03/2022 1:42 pm
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