Peeling prints?
Hi folks,
Quick question I hope - I've been printing some larger prints as a test and I notice it's peeling up at the edges on both sides as the print progresses.
Am just printing in ordinary PLA, 200C, 45C bed temp.
Seems to carry on fine, just obviously not a great finish.
What's the usual cause of this?
Have a feeling it's setting related, just not sure what to tweak!
Many thanks in advance!
Re: Peeling prints?
Did you read the bed temp recommendations section? 45c is seriously cold for PLA.
Re: Peeling prints?
Yes, site I ordered specified this
https://shop.3dfilaprint.com/23kg-filaprint-black-premium-pla-175mm-3d-printer-filament-10055-p.asp
Indeed it suggests 0-45c max!
Re: Peeling prints?
On Prusa PEI bed sheets, PLA really wants 60c. Anything lower will allow the PLA to crystallize and pull free of the PEI bed causing all sorts of issues.
Use the Prusa defaults until you gain a bit of experience, and go from there. By the way, there is better and much less expensive filament out their.
Re: Peeling prints?
Enable Brim, push it to 15-20mm for large prints, but more importantly...
Refresh your bed with a 100% acetone wipe, the clear stuff...alcohol will only remove contaminants.
(PLA only, for PET use Windex!)
Re: Peeling prints?
The prints are sticking, just peeling at the edges. Probably not a dirty bed. Bed temps need to come up, and with larger parts, even 60c isn't enough. I've had to go to 70c to keep corners of large parts from lifting.
For PLA use, PEI bed cleaning: Wash with a drop or two of Dawn dish setergent using a paper towel; rinse thoroughly and dry with fresh paper towel. Place on printer, and then wipe with alcohol. Usually enough. If still not sticky enough, a swab of acetone can help, but not recommended daily. In all cases, never touch the bed surface with hands - handle by the edges.
For PET use: PEI bed is usually too sticky. Spritz with Windex and let the Windex evaporate (do not wipe the bed after spritzing). Optionally, use a glue stick to coat the bed. And rubbing hands on the bed surface is also helpful to reduce PET stickdown.
Re: Peeling prints?
[Mod mode on]
Get one of these stuck on
(link deleted)
A little bit off-topic. Advertising a flex-plate does not help to peel up the prints. Or do you use this sheet to remove the prints like a spatula ? OK; vise versa, it's glueing better 😉 But for PLA, just keep your printped clean and do the live-Z correct.
[Mod mode off]
Thomas
Re: Peeling prints?
Get one of these stuck on
https://www.aliexpress.com/item/5pcs-Prusa-i3-MK3-MK52-Sheet-Heat-Bed-Platform-3D-Printer-Buildplate-Black-Sticker-Sheet-For/32900448024.html?spm=a2g0s.9042311.0.0.70604c4dkRyN9R
No 3rd party products should be needed to maintain stick with PLA material, just proper maintenance: get yourself some 100% pure acetone as described here, and you'll be fine.
Re: Peeling prints?
I use the plate to allow the printing objects that i dont want brims/rafts or supports. I can print objects that have a very minimal contact area without them coming loose at all.
No need for the comment. I'm trying to help out, but i shall now "leave it to the experts"
Re: Peeling prints?
Thanks for all your help folks - in short, acetone certainly has helped.
Also Tim's point re brands of pla may have something in it - filaprint really doesn't seem to work particularly well, I put in a reel of Sunlu and Prusament and they both print like silk!
Thanks folks!
Re: Peeling prints?
Thanks for all your help folks - in short, acetone certainly has helped.
Also Tim's point re brands of pla may have something in it - filaprint really doesn't seem to work particularly well, I put in a reel of Sunlu and Prusament and they both print like silk!
Thanks folks!
I've only been 3D printing for a year so take this with a grain of salt. Most PLA filament I've used and I've read about on this site say that the nozzle temp should be 215-220.
Maybe someone else can chime in on this.
Re: Peeling prints?
Hmm interesting, odd that Prusa's defaults are 210C then? (Just been printing at default and lowering it to test as reel said 185-210C best temps) - could try 215C then?
Odd though that other filaments work fine at everything I tested (eg 195-210 in 5C increments) - I'd have thought PLA was PLA to a degree ...!
Re: Peeling prints?
Hmm interesting, odd that Prusa's defaults are 210C then? (Just been printing at default and lowering it to test as reel said 185-210C best temps) - could try 215C then?
Odd though that other filaments work fine at everything I tested (eg 195-210 in 5C increments) - I'd have thought PLA was PLA to a degree ...!
If you review the different PLA proviles there is a "first layer" temperature and a lower one for the rest of the layers. After a little while printing I found out that just because you set a temperature doesn't mean it gets to the printer.
You have to adjust the temp in your slicer and then export it to gcode. What I was doing wrong was not saving it to the STL file also.
Re: Peeling prints?
Pigments, additives, and whatever else the mfg puts into a plastic affects melt points, glass temps, etc. Some PLA I've used wanted 190c, some wanted 220c. Then add part variables like layer height and overhangs, and you have a quandary. No one setting is perfect for all needs.