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Replacing the PEI sheet on the MK2/S

Replacing the PEI sheet on the MK2/S

Replacing the PEI sheet on the MK2/S
Relevant for:
Last updated 10 months ago
Replacing the PEI sheet on the MK2/S
 Difficulty
Moderate
 Steps
18
 Available languages
CSDEESFRITPL

Step 2 Freezing

Freezing
Freezing
Leave the heatbed inside the freezer for at least 30 minutes.

Step 3 PEI sheet detach

PEI sheet detach
PEI sheet detach
PEI sheet detach
PEI sheet detach
Use something sharp to lift one corner of the PEI sheet from the heatbed.
Grab the lifted corner with your hand a completely remove the PEI sheet. Frozen glue will remain on the bed.
Be careful not to scratch the bed itself!

Step 4 Safety FIRST!

Safety FIRST!
Safety FIRST!
Limonene (Lemonesol, D-limonene or something similar)
Keep in mind that Limonene can be extremely toxic for your pets, keep them out!
Nitrile gloves
Paper towels
Limonene can often be found in woodworking or hardware stores.

Step 5 Placing paper towels

Placing paper towels
Placing paper towels
Placing paper towels
Place the paper towels on the heatbed as shown in the picture. The whole glue surface has to be covered.

Step 6 Glue dissolve preparation

Glue dissolve preparation
Glue dissolve preparation
Glue dissolve preparation
Glue dissolve preparation
Spill Limonene on the paper towels until they are totally saturated with it
Place the whole thing in a plastic bag to prevent Limonene evaporation

Step 9 Scraping the glue

Scraping the glue
Scraping the glue
Scraping the glue
Scraping the glue
Get a plastic scraper and start peeling the glue from one corner.
Paper towel partially soaked in the glue provides an easy way to manipulate the glue.

Step 12 IPA cleaning

IPA cleaning
IPA cleaning
Clean the heatbed using IPA (or something similar that can clear out grease marks) and paper towel.
After doing this, make sure that no dust and fibres from paper remain on the heatbed surface!

Step 13 PEI sheet preparation

PEI sheet preparation
PEI sheet preparation
Peel out about 2 cm (1 inch) of glue protector from the SHORTER side of PEI sheet as shown in the picture
DO NOT try to peel out the sheet when it's glued, even in small area, it'll ruin the glue at that place!

Step 14 PEI sheet bonding

PEI sheet bonding
PEI sheet bonding
PEI sheet bonding
PEI sheet bonding
Bond the PEI sheet on the edge of the heatbed shown in the picture.
Make sure that the PEI sheet is placed as shown in the pictures (bottom edge of the sheet has to end at bevel of the heatbed and left side has to be aligned with edge of heatbed ) or covering whole printing area at least.
Rub the rest of the exposed glue with scraper covered in soft fabric as shown in the picture.

Step 15 Finishing bonding

Finishing bonding
Finishing bonding
Finishing bonding
Peel about one cm of glue protector and rub it with the scraper. Repeat several times, do not try to peel and glue large areas at once, it'll will highly complicate the process!

Step 17 ALL DONE!

ALL DONE!
ALL DONE!
Sparkling new print surface, just mount the heatbed back on the the printer and you can print!

Step 18 Recalibrate

Recalibrate
Recalibrate
As the geometry of the printer might have slightly changed, you need to recalibrate the printer.
Please follow the chapter 6.3.1 Calibration flow and use the KIT version.
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