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Failed Powder Coated PEI Sheet  

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dumbcomputers
(@dumbcomputers)
Active Member
Failed Powder Coated PEI Sheet

After less that 6 months the powder coated PEI coating is coming off the sheet.

Napsal : 28/01/2019 4:48 am
toaf
 toaf
(@toaf)
Noble Member
Re: Failed Powder Coated PEI Sheet

I wonder how long it is suppose to last.

I have a Prusa,therefore I research.

Napsal : 28/01/2019 4:59 am
cwbullet
(@cwbullet)
Member
Re: Failed Powder Coated PEI Sheet

6 months seems short.

--------------------
Chuck H
3D Printer Review Blog

Napsal : 28/01/2019 12:29 pm
CybrSage
(@cybrsage)
Honorable Member
Re: Failed Powder Coated PEI Sheet

I have had mine for over 6 months and that is not happening to me. But then again, I only print PLA and ABS,

Napsal : 28/01/2019 7:44 pm
cwbullet
(@cwbullet)
Member
Re: Failed Powder Coated PEI Sheet

I highly recommend that you not print PETG directly on the pc sheets. I know people do it, but it tends to over adhere .

--------------------
Chuck H
3D Printer Review Blog

Napsal : 28/01/2019 10:37 pm
Olef
 Olef
(@olef)
Prominent Member
Re: Failed Powder Coated PEI Sheet

Out of PLA, PETG and ABS, PETG is the most useful and least harmful of the three. Prusa printer parts are printed on the powder coated sheets out of PETG.

If we have to avoid using PETG then the powder coated bed is pretty much useless, especially if we damage one then there is no way to obtain a replacement.

I am convinced these will never be offered for sale. Once all the vouchers and sheets have been supplied then I believe they will be dropped.

Napsal : 28/01/2019 11:18 pm
Nikolai
(@nikolai)
Noble Member
Re: Failed Powder Coated PEI Sheet


I am convinced these will never be offered for sale. Once all the vouchers and sheets have been supplied then I believe they will be dropped.

I hope not. Every sheet has limited lifetime. I've printed around 20 objects in PLA/PETG and don't see any wear and tear so far. Once the sheet cools down, all the objects are literally jumping off the bed. I love the texture and don't want to miss it.

At the end 6 month means nothing. You can ruin your sheet within one day. And we know PR rejects many sheets because of the poor quality. Means the quality range is also pretty wide. Maybe some people are getting slightly better and some slightly worse one.

Often linked posts:
Going small with MMU2
Real Multi Material
My prints on Instagram

Napsal : 29/01/2019 1:07 am
dumbcomputers
(@dumbcomputers)
Active Member
Topic starter answered:
Re: Failed Powder Coated PEI Sheet

I printed 99% ABS and 1% PLA on this failed powder coated pei sheet. Cleaned with alcohol and windex.

Napsal : 29/01/2019 1:45 am
imod.systems
(@imod-systems)
Honorable Member
Re: Failed Powder Coated PEI Sheet


I highly recommend that you not print PETG directly on the pc sheets. I know people do it, but it tends to over adhere .

I was hesitant to print PETG directly onto a clean PEI sheet but I never had issues. I clean my PEI sheet with 99% iso alcohol before every print. I've only ever had issues with ABS over adhering and tearing the PEI off of one stickered sheet.

Napsal : 29/01/2019 8:20 pm
Chocki
(@chocki)
Prominent Member
Re: Failed Powder Coated PEI Sheet

One thing I have noticed is that the texture of the PRUSA printed parts is a lot more coarse than the texture on my bed, so why does PRUSA use different textured PEI beds to what has been shipped?.
Now from what I can tell, they only print PETG parts in house as that is what is supplied as the printer parts, so maybe the finer texture is to give better adhesion for PLA, but this means smaller grit size, which could mean less adhesion to the bed substrate?, just a thought!.

Oh, and mine has also come away along part of the purge line. Printing mainly PETG and not a lot either, probably no more than 2kg so far.

Normal people believe that if it ain’t broke, don’t fix it. Engineers believe that if it ain’t broke, it doesn’t have enough features yet.

Napsal : 29/01/2019 9:22 pm
Erik
 Erik
(@erik-3)
Estimable Member
Re: Failed Powder Coated PEI Sheet


Oh, and mine has also come away along part of the purge line. Printing mainly PETG and not a lot either, probably no more than 2kg so far.

Same here. No damage elsewhere. I've since just caked a ton of PVA glue all over the entire front of the build plate.

Napsal : 29/01/2019 9:57 pm
dumbcomputers
(@dumbcomputers)
Active Member
Topic starter answered:
Re: Failed Powder Coated PEI Sheet


One thing I have noticed is that the texture of the PRUSA printed parts is a lot more coarse than the texture on my bed, so why does PRUSA use different textured PEI beds to what has been shipped?.

Yes, the plate that failed for me was an earlier one which a very fine texture on it. My other plate which I got about 2-3 months later was much more coarse and a bit more shiny.

Napsal : 29/01/2019 10:06 pm
dumbcomputers
(@dumbcomputers)
Active Member
Topic starter answered:
Re: Failed Powder Coated PEI Sheet

Followup....Prusa is replacing the sheet under warranty.

Napsal : 01/02/2019 5:35 pm
cwbullet
(@cwbullet)
Member
Re: Failed Powder Coated PEI Sheet

Can you post more pictures of your sheet?

--------------------
Chuck H
3D Printer Review Blog

Napsal : 01/02/2019 5:40 pm
toaf
 toaf
(@toaf)
Noble Member
Re: Failed Powder Coated PEI Sheet


Followup....Prusa is replacing the sheet under warranty.

nice did they say how long it should last?

I have a Prusa,therefore I research.

Napsal : 01/02/2019 8:24 pm
ed
 ed
(@ed-3)
Reputable Member
Re: Failed Powder Coated PEI Sheet

I'm still waiting on my textured sheet... 10/14/18 order date.

Napsal : 02/02/2019 12:56 am
cwbullet
(@cwbullet)
Member
Re: Failed Powder Coated PEI Sheet


I'm still waiting on my textured sheet... 10/14/18 order date.

goood luck.

--------------------
Chuck H
3D Printer Review Blog

Napsal : 02/02/2019 2:45 am
ed
 ed
(@ed-3)
Reputable Member
Re: Failed Powder Coated PEI Sheet



I'm still waiting on my textured sheet... 10/14/18 order date.

goood luck.

Sorry I screwed up 10/14/17 order date... DOH!!!

I suppose the need for "good luck" is still in order.

Napsal : 02/02/2019 2:56 am
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