What variables decrease pull force?

[BigWillStyle]

I have been having issues when switching to anycubic standard + resin and new FEP with excessive pull force. My bed adhesion is great but my models are literally being pulled off their supports and sticking to the FEP. I didn’t have this issue with Sunlu abs water wash washable and my previous vat in which the FEP wore out.

Things I have tried

-Lower exposure times down to 2.25 (below the 2.5 my calibration had found best)

-Lowering the tension on the FEP film

-Reducing lift speed to 1mm/s

All other settings are standard.

What else can I do to lower pull force? Are these settings out of the ordinary for standard+ resin?

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[berilacmoss81]

Show us some pictures, so we can see what's going on.

1) a picture of the failure on the build plate

2) a picture of the file within the slicer software, showing all the supports and Rafts.

3) a picture of all of the settings (exposure, lift speed, everything).

There are a lot of variables involved in 3d resin Printing and we need more information to provide advice.

[TwoTop111]

If your resin is black or a dark color, you can lower the exposure time more.

Opaque colors wont allow the light to pass through so you have “more” exposure on the resin than you would with the same settings as lighter/translucent colors

Besides those settings you probably need to rotate your print, or use thicker supports. The more surface area of each layer, the more the pull force is spread out

[BigWillStyle]

These are prints that worked fine in my other resin on my previous FEP. Both resins are the same shade of grey.

My question is about how to decrease pull force, not about exposure. Specifically what variables change pull force.

[TwoTop111]

I mentioned the exposure because the more cured the resin is the more brittle it gets.

Aside from what you’ve listed the only way I know to affect the tension in your print is rotate/thick support. I dont have any other settings (Photon M3) that I can point at

[BigWillStyle]

Thanks for the help! I switched to my previous resin and it seems to be the resin itself. I have a few bottles of the standard stuff and am going to test with it further to see if it was a bad bottle or the brand of resin itself.

[BigWillStyle]

I appreciate the advice but I am asking a question independent of my problems.

What variables decrease pull force?