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Switching between print bed sheets  

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Marc
 Marc
(@marc-4)
Active Member
Switching between print bed sheets

I started off printing PLA on the smooth sheet, but did some PETG printing last on the textured sheet. I did have to readjust the Z offset accordingly. It was then I realized how much I like that the current MK3S firmware allows me to have separate settings for different sheets. I wrote down my smooth sheet offset (how quaint!) before tuning for the powder-coated sheet.

I hope that an update for the Mini firmware that includes supporting multiple sheets comes soon.

That said, the printer was a little reluctant to heat the bed up to 85° for PETG, throwing a "thermal runaway" exception at around 75°. I power-cycled the printer and restarted the preheating. With it being closer to 85°, it did get there that time. I may just print PLA only for a while.

Posted : 26/12/2019 2:09 pm
Julian liked
Area51
(@area51)
RE: Switching between print bed sheets

Totally agree, nearly all sold Minis has both sheets and it would be great if the z-offset was stored in the firmware - just space for two settings should be enough. I have my offsets written down too 🙂 

Thermal runaway is reported on GitHub:
Thermal Runaway Bed-error when placing steel sheet on heated bed #24

I had it a couple of times, when putting the build plate back on hot bed. The cool down from build plate was enough to trigger thermal runaway.

Have a look at my models on Printables.com 😉

Posted : 26/12/2019 3:16 pm
Marc
 Marc
(@marc-4)
Active Member
Topic starter answered:
RE: Switching between print bed sheets

In my case, the textured sheet was already on the bed when I started preheating. It got the thermal runaway after several minutes of me not touching the printer.

Posted : 26/12/2019 3:50 pm
Texy
 Texy
(@texy)
Reputable Member
RE: Switching between print bed sheets

Indeed it is a very useful feature of 3.8.1 on the mk3, hence why I am not downgrading to a previous version, even with the bugs in it currently.

I'm sure it'll be included by the time my Mini is shipped mid Feb.

Texy

Posted : 27/12/2019 11:40 am
Dave Avery
(@dave-avery)
Honorable Member
RE: Switching between print bed sheets

mini uses the buddy board and all new 32 bit firmware

Posted : 27/12/2019 6:42 pm
Andy
 Andy
(@andy-11)
Eminent Member
RE: Switching between print bed sheets

I too have the textured and smooth sheet, the differences were rather large in z-offset between the two. Would love to have the sheet "database" as on the MK3, certainly would make life easier. I've not encountered the thermal run-away error with either sheet at bed temps up to 85 for PETG.

Posted : 27/12/2019 11:08 pm
AudenHome
(@audenhome)
New Member
Linen Sheets

Hi,

When I was searching for Linen Sheets on google. I found this informative discussion. Linen Sheets have become an incredibly popular choice for bedding thanks to their unique texture and casual look.

 

AudenHome.

AudenHome

Posted : 04/01/2021 6:17 am
Gordon W
(@gordon-w)
Reputable Member
RE: Switching between print bed sheets

@andy-11

This feature is in firmware 4.3 release candidate which is downloadable from GitHub now (  https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v4.3.0-RC1 ). Usual caveats apply, it's a release candidate, not a full release, but there are lots of people using it with no major issues reported.

Posted : 04/01/2021 1:03 pm
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