⬢Prepare some room in your freezer for dismounted heatbed.
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- Replacing the PEI sheet on the MK2/S
Replacing the PEI sheet on the MK2/S
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- Printer maintenance
- How to trim PTFE tube - Multi Material
- How to post-process the printed parts
- How to replace a heatbed thermistor (MK3S+/MK3S/MK2.5S/MK2S)
- How to trim PTFE tube - Original Prusa printers
- Replacing the PEI sheet on the MK2/S
- 1. Freezer preparation
- 2. Freezing
- 3. PEI sheet detach
- 4. Safety FIRST!
- 5. Placing paper towels
- 6. Glue dissolve preparation
- 7. Glue dissolving
- 8. Preparing for taking out the glue
- 9. Scraping the glue
- 10. Finishing up
- 11. Water cleaning
- 12. IPA cleaning
- 13. PEI sheet preparation
- 14. PEI sheet bonding
- 15. Finishing bonding
- 16. Cutting the edges
- 17. ALL DONE!
- 18. Recalibrate
Replacing the PEI sheet on the MK2/S
Relevant for:
Last updated 3 years ago Difficulty
Moderate Steps
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⬢Leave the heatbed inside the freezer for at least 30 minutes.
⬢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!
⬢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.
⬢Place the paper towels on the heatbed as shown in the picture. The whole glue surface has to be covered.
⬢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
⬢Let the Limonene do it's magic for at-least 40 minutes.
⬢Remove the bed from the plastic bag and place it on something disposable (old newspaper).
⬢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.
⬢Process can be repeated for the remaining glue.
⬢Clean the heatbed using water and paper towel.
⬢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!
⬢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!
⬢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.
⬢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!
⬢Cut the extra PEI using sharp knife or razor blade
⬢Sparkling new print surface, just mount the heatbed back on the the printer and you can print!
⬢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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