I have been using my original FEP on my tray since I started using the Photon almost two months ago. As a newbie, I learned that the sheet will get marred or dented by trying to scrape bits of plastic off with your fingernail or with the plastic scraper they provide, so I don't do that any more. You can also get some scratch patterns if you rub too hard with a paper towel, so I don't do that anymore. But I also found that the system is pretty forgiving. None of those issue seemed to have a significant impact on my prints.
Yesterday, I had a problem where a tiny bit of cured resin was stuck on the FEP and I couldn't get it off. It almost like a single LCD pixel wasn't masking. I'm not suggesting that was actual the case; it just seems like that would produce the artifact. Anyway, I decided it was time to replace the film.
I have to say that having a brand new film is very satisfying. It is crystal clear and I feel confident that I know how to take care of it now.
The process for replacing the film was straightforward and went very well. The only tiny, insignificant nit is the whole "using a bottle cap" to set the proper initial tension. Seriously? A bottle cap? The bottle cap I used had a little bit of knurling on it that did actually get transferred to the film. The final tensioning all but made it disappear, but the whole bottle cap thing seems a bit ridiculous to me.
So my question is, has anyone gone ahead and modeled something to use in place of the bottle cap? If not, has anyone thought about it? The video says a height of about 13mm. It doesn't say anything about the diameter, though. Also, does it make sense to make something more lozenge shaped, since the tray is rectangular? Maybe some kind of guide to keep it centered while working on the screws?
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