Stuck TOO well! What did I do wrong with ABS?  

Re: Stuck TOO well! What did I do wrong with ABS?

Did you print ABS without first using the glue stick on it?

Re: Stuck TOO well! What did I do wrong with ABS?

Did you print ABS without first using the glue stick on it?

Hi Michael

No glue stick. I've been printing without cleaning or adding anything to the plate for weeks in both PLA and PETG. No issues whatsoever.

I thought one of the issues with ABS was difficulty in keeping it stuck to the bed so adding a release agent (like window cleaner for PETG) was not a good idea. Is this completely wrong? The only prints (very few) I've done in ABS came off the plate easily after cool down which is why I'm wondering what happened here. I'd really like to avoid it happening again.

Re: Stuck TOO well! What did I do wrong with ABS?

I would make sure support knows that happened to your sheet.

I have never printed with ABS but I really don't remember reading too much about ABS having the petG too stickey issue.

Re: Stuck TOO well! What did I do wrong with ABS?

ABS is problematic.

It needs really strong adhesion, or it will pull corners up. I've had similar issues where large ABS prints will pull the surface (and part of the glass) clean off an Ultrabase bed.

In addition, it's often a bit of a game as to whether ABS will stick too strong, or not enough. I initially had problems getting it to stick to (smooth) pei. Using a glue stick gave enough adhesion, but then the PEI started bubbling underneath (not little bubbles, big bubbles where the entire PEI sheet had been lifted from the surface). I've also had similar issues with Buildtak.

Since then I've switched to Printbite+. I run Printbite+ on one side of a steel sheet for ABS (I also print PETG, PLA, etc on it), and a sheet of PEI on the other, for materials that the Printbite doesn't play nice with. For most materials, Printbite and PEI are very similar, but for ABS, Printbite is awesome. I am able to print a perfect Warpinator5000, which will just slide straight off the bed once it drops to ~70º.

I'm going to get a textured sheet, but it's going to be used only for special occasions, and probably not for ABS/PC and other potentially difficult materials.

Re: Stuck TOO well! What did I do wrong with ABS?

Thanks Martin, I'm going to look into Printbite+ even if only for the few times a year I "might" want to print with ABS. For now I'll just assume this case was one of the unlucky times ABS decided to become permanently attached.

Re: Stuck TOO well! What did I do wrong with ABS?

I too have had the issue of over adhesion with ABS and PETG. I might have to try Printbite+. What size did you order for the MK3?

Re: Stuck TOO well! What did I do wrong with ABS?

There’s a pre-cut mk3 option. (Though next time I’d get one a tad larger so it goes right to the front and back of the build plate. Cutting that stuff is tricky though.

Re: Stuck TOO well! What did I do wrong with ABS?

ABS destroyed my first stickered sheet; tore it straight off. I always thought ABS was a pain in the butt to get good adhesion and boy was I wrong.

Re: Stuck TOO well! What did I do wrong with ABS?

ABS destroyed my first stickered sheet; tore it straight off. I always thought ABS was a pain in the butt to get good adhesion and boy was I wrong.

Same here. But since then, I use glue stick and alcohol and got pretty good results.

Re: Stuck TOO well! What did I do wrong with ABS?

I just looked. I do not see an MK3 option. There is an MK2 option.

Re: Stuck TOO well! What did I do wrong with ABS?

I just looked. I do not see an MK3 option. There is an MK2 option.

I didn't see an MK3 specific option either. Is the MK2 bed the same size as the MK3?

Re: Stuck TOO well! What did I do wrong with ABS?

I just looked. I do not see an MK3 option. There is an MK2 option.

I didn't see an MK3 specific option either. Is the MK2 bed the same size as the MK3?

Nor sure. I could not find it in Google.

Re: Stuck TOO well! What did I do wrong with ABS?

I just looked. I do not see an MK3 option. There is an MK2 option.

I didn't see an MK3 specific option either. Is the MK2 bed the same size as the MK3?

Nor sure. I could not find it in Google.

on prusa shop, pei sheet replacement:
mk2: 260 x 225 mm
mk3: 260 x 242 mm
but as printing size is the same, a smaller area can be good enough.
i have both printers but for now i'm not close to them to tell you much.
and from flex3drive: "If you require a size that is not listed, please select the nearest size that your required dimensions will fit into, and add a note when checking out. We will then cut to size at no charge."

Re: Stuck TOO well! What did I do wrong with ABS?

It is odd how some folks do not have this problem. I wonder if ti is the type of PETG or ABS used?

Re: Stuck TOO well! What did I do wrong with ABS?

Heh. Well that could be why mine was a tad short. The shop I ordered mine from has the wrong dimensions. The mk2 one works, but you could also request the right size.

Re: Stuck TOO well! What did I do wrong with ABS?

It is odd how some folks do not have this problem. I wonder if ti is the type of PETG or ABS used?

I used Push Plastic’s low warp ABS which destroyed the bed. Inland PETG has been fine. I even make sure the bed is super clean with alcohol.

Re: Stuck TOO well! What did I do wrong with ABS?

I used a cheap Makerbot ABS . It stuck too much.

Re: Stuck TOO well! What did I do wrong with ABS?

I started a PETG print job with my usual IPA wipe down on a texted PEI plate.
1st layer went down nicely. So, I left the machine to do its thing.
Came back 20 minutes later and found all sorts of edge lifting and warping.
Weird. Did I not clean the plate correctly? Was there oil on my hands?
PETG always behaved well on my machine.
It's 99% of my of prints and the results were reliable - until this job.

Then, I noticed the faint, sweet scent......... F&*CK!
I had mislabeled an ABS box as PETG.

Horrifyingly many objects were majorly stuck to the textured PEI plate. You'd think they'd just fall off given the edge lifting.
My poor plate managed to withstand a lot more brutal object removal, but some thin bits of ABS would not come off.
Thank goodness for acetone. That removed the ABS, but the sheet got a bit discolored and took several cleaning cycles of detergent, windex, and IPA before it returned to its normal PETG happy goodness.

At least you intentionally printed with ABS!

Re: Stuck TOO well! What did I do wrong with ABS?

I never thought about it not being ABS. If sure smells like ABS when I print.