nFEP Film Sheet 200 x 140mm Thickness 0.125mm for E6/X1 and Other 5.5/6 inch UV Resin 3D Printers, Pack of 3 Films

First of all, this is a great product- I'm not sure exactly WHAT it is, but it's not FEP... Whatever it is, though- it works. And, works well. I have replaced the original FEP sheets in the machines I use for production with these. I DO have an EPAX X1 Printer, which I also really love, and of course I use the Non-FEP sheets in that. But, It's going in EVERY printer once I have a chance to do so. What makes it better?? It's hard to be objective in a review of a product like this, because there is no really easy way to measure what makes it better since there are so many variables in SLA printing. But, I have far fewer failures with this film caused by prints sticking to the FEP. It also seems to last longer between replacements. Now, the company. You can't ask for better customer service- They are prompt at replying to inquiries, knowledgable about their product, and willing to help customers. They are also very proactive when it comes to customer satisfaction- The last set of FEP sheets that I ordered had a mistake in it, they shipped only one sheet rather than three. I didn't catch the mistake- as I had just put them on a shelf to use later- but I got a letter from them, along with the missing sheets, explaining that they had made an error, and were correcting it! That's what I call service.

Despite the fact that calling it "non FEP film" means it could probably have been a sheet of generic Saran wrap without counting as false advertising, this stuff is definitely the stuff you should buy and keep on hand for when the original FEP film gets damaged. It is very obvious that it releases the prints better; I think I might have installed it a little too loose (you are supposed to put a plastic bottle cap or thin piece of foam under it when screwing it into the frame, so it doesn't get stretched too tight and get damaged when you then screw the frame into the resin tank) as I can hear it lifting up with the model a little bit before popping off between layers, but even so my prints are all fine and there has not yet been any signs of damage to this film beyond some minor, shallow scratches (which I would expect with FEP as well). The only reason I took a star away from the value is that it is really easy to damage a sheet before even installing it, such as bending/putting a hard crease into a sheet as you are getting ready to install it because of its staticky nature making it tough to handle gently. I don't know if there is any real solution to this, but it does mean your 3 pack might become a 2 pack really quickly.

(To no fault of this FEP) The first sheet of this FEP I used resulted in about 10 straight print failures that left a lot of hardened resin on the FEP itself. Shockingly, when I finally discovered my base problem with the printer and resin (again, not the FEPs fault), I ran another print with the SAME SHEET that endured 10 failures before and the print came out FLAWLESS. Before buying this, a print failure of this caliber almost always resulted in an immediate replacement of the FEP and a couple more dollars down the drain. Obviously, this sheet didn't last a ton longer having been treated pretty brutally, but how well it performed after so many failures is a true testiment to the incredible engineering that went into this product. I'm never buying another brand again.

My first OEM FEP film failed in the middle of (maybe) the fourth print. So far I've had close to a dozen using the EPAX non-FEP (nFEP), and this has been great. Doesn't make a giant clicking sound when the first couple layers are being laid down while making the raft on the build plate (the original FEP one made a "click" as things unstuck and were lifted during printing. Works and installs just fine in an Elegoo Mars (and as the Anycubic and EPAX apparently have the same size resin vat, it should work for either of those as well). I have backup FEP sheets now, but I'm very tempted to put a few more of these in the consumable parts shelf...

I thought this nFEP would be the solution to all my resin printing problems. Not so much. These films work well but I did not really see the benefit over regular FEP films. They are more expensive and do a great job but is it worth the extra money? I don't think so. Went back to FEP and hadn't had any issues either.

[UPDATES AT THE BOTTOM] [If you see this review on Youtube posted by "Lisa Woods", DO NOT CLICK ON ANY LINKS. That is a scammer/bot/asshole copying Amazon reviews.] Got around to installing this on an Elegoo Mars 3D printer a few days ago, I've printed several almost-full plates with no issues. No need to clean or aerate the film between sessions. Re-level and find Z Home again if this sheet is a different thickness than your old FEP. The usual SUCCC-POP! peeling sound heard when the buildplate rises after printing bottom layers is greatly reduced (though it's still loud when the plate is full). If the next time I empty the vat this non-FEP film isn't all dinged up, I'll bump up the rating to the max. If you're printing small stuff with standard gray/white resins I say stick to the cheaper FEP sheets. This non-FEP stuff (whatever it is) is probably better for black resin, if you print items with large surface area, or other stuff that's notorious for its reluctance to adhere to the buildplate. === [UPDATE 4/10/20] I must be at least on the 30th print session by now, mostly full buildplates, and this film is in way better shape than ordinary FEP. When you print the same thing constantly, the film will get dings from supports eventually, but they're a lot fainter with this film. [UPDATE 1/13/2021] It's incredible that the same sheet from almost a year ago has held up so well. The only sign of deterioration on the sheet is a hazy patch near the middle that gets heavy use. I've simply moved models off that area and they still print just fine. I think it's important that you get your Z Home right for maximum durability. This is so the build plate doesnt lower more than it has to and prevent dinging the sheet with the supports as they print.

Used on a Voxelab proxima 6 4k. Releases perfectly. I don't hear the usual drum sound when the bed pulls away from the nfep. Was a bit of a pain to punch holes in it but I had a punch to accommodate the two sizes of holes. Seems worth the cost and trouble.

No listed instructions for the product but the ELEGOO website has the full data sheet for all their products.