ELEGOO MARS 3: How to replace the FEP film? 

I replace my Elegoo Mars 3 pro FEP fairly frequently. (User carelessness, not the machine or Elegoo's fault.) I don't have foam laying around for a spacer, with that said, I use a stack of 32 fresh playing cards as my spacer, and it works great. 32 playing cards as a spacer. This is a reminder for myself and a tip for others. I found that tip on Reddit, I think.

Cutting I generally use X-acto knives anyway, and I tighten in a criss-cross pattern by initially running the screws in until all the screws are seated and then torquing to ensure an even tension. Just like you would do when setting up an Engine head or tightening tires to the hub. I used dental tools to pop the FEP, which I actually use to remove supports and clean up any nubs left over from printing. The foam looks like some I used to extrude when I worked in plastic foams; I would say it would be 1/4" x 2" x 2". I just had that foam as a sheet hanging around, and it would have been the same foam from the original Printer packaging.

What is that foam, how thick it is

Thank you

quick question, I locked the 4 final corner screws in first anyone think that would make a difference? The FEP was still very tight and seemed right.

The text in the video says a 50x35x5mm piece of foam but, based on how the foam actually shown being used is wider than the center three holes at the top of the squash, that looks like an 80x70mm piece mentioned in previous Mars videos (those being stated as 8mm thick rather than 5mm). So which set of dimensions are correct for the Mars 3 tanks? What is written or what is actually used? Thanks!

Shouldn’t they include that piece of foam with replacement release film? I have the Mars 4 Ultra, which uses ACF…similar but different…and I had no idea how thick the piece of foam needed to be. So, I just placed a small stack of disposable shop towels (which I cut into 4 so I’m not wasting an entire towel when I just need a small piece to , for example, wipe the bottle of resin after pouring into the tank) down before proceeding. No idea if the ACF is too tight, or not tight enough…guess I’ll find out since I have a print running now.

When cutting off the FEP excess material, please remember to cut away from yourself not towards yourself as presented here.

Where do we get the right fep from? I’ve only seen 3rd party on Amazon Australia and don’t know which is the right one to get. My mars 3 pro didn’t come with any spares.

So no tuning, just a foam piece? By God Ive been struggling way to hard to understand how to properly do this x)

Always cut away from your hand NOT towards it kids.

So that piece of foam to relieve tension looks important. Was it supposed to come with the machine or the FEP sheet? Because I didn't get one with my Mars3 pro. I noticed that protective foam in the box the FEP came with is 5mm. Could I cut a rectangle from it? Also are the dimension in the description correct for a Mars3 Pro vat? Thank you

Had to change my FEP - and it's easy. Lots of screws...

So there's no need to puncture holes in the FEP for the Mars 3. Do the screws just puncture it themselves?

I didn't use the/a foam sponge. Is that bad? Ord what's it's purpose?

I can’t seem to get the first set of bolts off, they’re all completely. Stuck. What can I do about this?

The way he was cutting towards himself with that knife was giving me anxiety haha, That's how you cut yourself.

Where do I get "the foam" from?

I love the vat design. The process descriptions are...odd. ;)

It's like putting a new head on a drum and tuning it. Lol

how thick should the foam be?

Does this not require tuning?

Cut towards your fingers ? Not the best safety idea always cut away from your fingers ! Test of the video was great

Je n ai pas trouvé, avez-vous vous les valeurs recommandées du serrage au couple svp ?

I’ve did all this and the screws never tighten !

super annoyed just got my printer and it arrived with an almost pen sized hole in the fep and no spare sheets, but at least replacing it doesn’t seem too much of a pain…..

2:05 oh so you have to peel a protective layer, i didn`t noticed :/

The "squash"? I think I understand...?

with the high dollars we spend on these you would think the spacer would be part of what you buy. I spent 45.00 of the feb only to find out now I need to monkey rig a way to use it. Really need to think about those who buy the products and not run things on the cheap on your end we are paying high dollars for just 5 sheets

The only thing this video gets wrong is NEVER EVER cut towards your hand using a sharp knife.

Never cut toward yourself. :) Also, shouldn't it be tightened in a cross-weave pattern (top left, bottom right, top right, bottom left, etc.?) I would recommend wearing gloves. There is a tone analyzer somewhere on the internet that when you thump the FEP and record it to this analyzer, it will give a precise tone if you have done it correctly. Love the video!!!!

omg, cant watch here using the knife against here hand! Pleas dont do it that way! Always use the knife away from your hand!!!

Why would they make these hex screws instead of Philips or even flathead. Jesus

Painful watching you cut with that Staley knife towards yourself

It's a bit ridiculous that the mars 3 doesn't come with an Allen key the right size to replace the FEP

This is not a good tutorial

When I tighten the screws they won't punch a hole through the film and I'm going to end up stripping the hex head on the screw. What do I do? @elegoo official