RE: Prusament PETG destroyed my MK3 print sheet
I use Windex on the smooth sheets to reduce adhesion. It works. I would not use it on the PC sheets.
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Chuck H
3D Printer Review Blog
FYFY: Destroyed my MK3 print sheet using PETG (was RE: Prusament PETG destroyed my MK3 print sheet)
Corrected the title. OP didn't read the instructions. It's just as easy to tear up glass or other surfaces this same way. This is nothing unique to Prusa printers, nor PEI surfaces. PETG grips too well without proper bed prep.
RE: Prusament PETG destroyed my MK3 print sheet
Besides of that, I'm amused by the idea of using "special agents" to help with adhesion. This is something I did the last time in 2012 because all of my print beds afterwards were able to handle all materials without extra chemicals. Funny, that is not the case for Prusa.
From the shop:
Before printing, make sure the surface of heatbed is clean as described in 3D Printing Handbook. Do not use isopropyl alcohol to clean the bed, or the adhesion may be too strong, if you do not have anything else on hand, use the bundled glue as a separator after cleaning it. Windex or similar windows cleaner is a great option for PET and you don’t need to use the glue after the cleaning. Pour a little amount on an unscented paper towel and wipe the print surface.
Handbook, page 13:
The best option is Isopropyl alcohol available indrugstores which is the best for ABS, PLA and others (except for PETG in combination withthe smooth PEI sheet, where the adhesion may be too strong. See the chapter 12.2 PET forinstructions).
Handbook, page 56:
You shouldn’t use isopropyl alcohol to clean the bed, the adhesion may be too strong. If you do not have anything else on hand, use the bundled glue as a separator after cleaning it. Windex or similar window cleaner is a great option for cleaning the heatbed for PET.
Do not use isopropyl alcohol, otherwise the adhesion may be too strong. You can use the bundled glue stick as a separator, however a better choice is Windws or similiar window cleaner. Pour a little amount of it on an unscented paper towel and wipe the print surface. For more information about print surface maintenance, read our guide.
PETG sticks very well to PEI, which is generally a good thing. However, sometimes it could stick a little bit too well, and you could rip a piece of PEI coating from the bed. To prevent that from happening, apply a separating agent (e.g., glue stick) onto the print surface.
They seem to have provided the info everywhere anyone would look, and a few more places on top of that, while they are hardly unusual in not printing manual pages on their filament boxes. A quick Google shows gluesticks or Windex seem to be common practice, not some Prusa-specific thing. Sorry, but you goofed.
As I said, this important instruction is _not_ on the _actual_ product. So I guess you are goofed. 🙂
RE: Prusament PETG destroyed my MK3 print sheet
As I said, this important instruction is _not_ on the _actual_ product. So I guess you are goofed. 🙂
The instructions for the power switch are also not on the actual product. Hardcopy and electronic versions of documentation are provided which you are directed to read before using. You screwed up. It happens to all of us. Quit trying to get us to agree with you, learn from it and move on. Oh, and read the fine manual.
RE: Prusament PETG destroyed my MK3 print sheet
Besides of that, I'm amused by the idea of using "special agents" to help with adhesion. This is something I did the last time in 2012 because all of my print beds afterwards were able to handle all materials without extra chemicals. Funny, that is not the case for Prusa.
From the shop:
Before printing, make sure the surface of heatbed is clean as described in 3D Printing Handbook. Do not use isopropyl alcohol to clean the bed, or the adhesion may be too strong, if you do not have anything else on hand, use the bundled glue as a separator after cleaning it. Windex or similar windows cleaner is a great option for PET and you don’t need to use the glue after the cleaning. Pour a little amount on an unscented paper towel and wipe the print surface.
Handbook, page 13:
The best option is Isopropyl alcohol available indrugstores which is the best for ABS, PLA and others (except for PETG in combination withthe smooth PEI sheet, where the adhesion may be too strong. See the chapter 12.2 PET forinstructions).
Handbook, page 56:
You shouldn’t use isopropyl alcohol to clean the bed, the adhesion may be too strong. If you do not have anything else on hand, use the bundled glue as a separator after cleaning it. Windex or similar window cleaner is a great option for cleaning the heatbed for PET.
Do not use isopropyl alcohol, otherwise the adhesion may be too strong. You can use the bundled glue stick as a separator, however a better choice is Windws or similiar window cleaner. Pour a little amount of it on an unscented paper towel and wipe the print surface. For more information about print surface maintenance, read our guide.
PETG sticks very well to PEI, which is generally a good thing. However, sometimes it could stick a little bit too well, and you could rip a piece of PEI coating from the bed. To prevent that from happening, apply a separating agent (e.g., glue stick) onto the print surface.
They seem to have provided the info everywhere anyone would look, and a few more places on top of that, while they are hardly unusual in not printing manual pages on their filament boxes. A quick Google shows gluesticks or Windex seem to be common practice, not some Prusa-specific thing. Sorry, but you goofed.
As I said, this important instruction is _not_ on the _actual_ product. So I guess you are goofed. 🙂
Who enumerates combinations of print surface and treatments on the boxes for their filaments? Prusa dedicates a full page of the Handbook to PETG, with suggestions specific to their printers and sheets, and they provide an online copy of the handbook so they can keep it up to date as things change. It is not reasonable to expect them to print usage manuals on the boxes of their filament.
Just assembled a Gordian Knot puzzle printed in two colors...the first in Colorthread PETG (which gave nothing but a recommended print temperature range), the second in Prusament PETG (which went further and actually gave recommendations for heatbed temperature as well). Both sets popped cleanly off the PEI sheet when I flexed it, and the sheet hasn't seen anything but Windex, PETG, and cat feet in over a month. Pretty sure I'm not the one making mistakes here.
RE: Prusament PETG destroyed my MK3 print sheet
Show me ONE written instruction for how to properly use a flight of stairs on any stairway and I'll buy the first round.
RE: Prusament PETG destroyed my MK3 print sheet
Show me ONE written instruction for how to properly use a flight of stairs on any stairway and I'll buy the first round.
Does this qualify?
https://www.wikihow.com/Exercise-Using-Your-Stairs
🤣
RE: Prusament PETG destroyed my MK3 print sheet
I'm glad someone brought up the responsibility of Prusa to ensure that users can't possibly miss critical information. Suggest Prusa include a 400 page multilingual book of warnings along with cautions prominently displayed on the printer. Legal should review examples such as this one.
RE: Prusament PETG destroyed my MK3 print sheet
Show me ONE written instruction for how to properly use a flight of stairs on any stairway and I'll buy the first round.
Does this qualify?
No - it isn't posted on the stairs by the manufacturer.
RE: Prusament PETG destroyed my MK3 print sheet
Or that car instruction to not drive a car into another car, pedestrian, or off a 500 foot cliff. Why the hell didn't Ford brand those warnings on every steering wheel? And my bicycle - where are the warnings that falling off the bike at 25 MPH will hurt and can break bones? Even my shoes need but don't have warnings about untied shoelaces, trip hazards in the streets and sidewalks. And think of all those dogs that run out to attack you - not one of them have warning labels "DOG BITES" ...
RE: Prusament PETG destroyed my MK3 print sheet
Guys - there is such a thing as piling on.
Be kind to your fellow users, even if they came across badly.
RE: Prusament PETG destroyed my MK3 print sheet
Where is the warning against that in the Prusa Forum Guidelines?
ps: besides, I'm only relating other places there aren't warning stickers that are actually needed and would have been useful to me personally.