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[Closed] Spring sheet lifting during print !  

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raymond.w2
(@raymond-w2)
New Member
Re: Spring sheet lifting during print !

I don't have one yet, but someone on another post said it was 1.1mm with PEI sheet.

Posted : 05/02/2018 5:04 pm
pentrena
(@pentrena)
Eminent Member
Re: Spring sheet lifting during print !


yea its not worth to make/ship enclosures, if you are having the money for a prusa and the inclination to own a printer, you are diy your enclosure for <30$ from ikea/plastic bins/Thermasheath

I'm Spanish .... sorry my lenguaje

Link model ikea >30$?

Posted : 05/02/2018 7:10 pm
Printschnitzel.at
(@printschnitzel-at)
Active Member
Re: Spring sheet lifting during print !

😐

Posted : 14/10/2018 11:17 am
Tony
 Tony
(@tony-8)
Active Member
RE: Spring sheet lifting during print !

Old thread, but I experience the same problem printing large nylon parts. The stock spring steel lifts off the bed resulting in warped parts. Part is still stuck on PEI, but spring steel just can't handle the mechanical stress.

I've had to use thicker (0.77mm) steel plate which solves the problem, but given it is not spring steel it deforms when bent.

Ideal solution would be a thicker spring steel offering from PRUSA to solve this problem. 

My printer is in an enclosure, and print bed is only at 30C which works great for adhesion of Nylon on PEI with Elmers Xtreme glue stick.

Posted : 20/02/2020 1:40 am
vintagepc
(@vintagepc)
Member
RE: Spring sheet lifting during print !
Posted by: @tony-b9

Old thread, but I experience the same problem printing large nylon parts. The stock spring steel lifts off the bed resulting in warped parts. Part is still stuck on PEI, but spring steel just can't handle the mechanical stress.

I've had to use thicker (0.77mm) steel plate which solves the problem, but given it is not spring steel it deforms when bent.

Ideal solution would be a thicker spring steel offering from PRUSA to solve this problem. 

My printer is in an enclosure, and print bed is only at 30C which works great for adhesion of Nylon on PEI with Elmers Xtreme glue stick.

I've heard tell of folks just using binder clips to keep the sheet flat with the bed in these cases. Worth a try - the issue with magnets is that as soon as the sheet lifts away just a little, the force decreases by the square of the distance, and so even less force means it can lift even more... and the problem just snowballs. Notice how hard it is to get the sheet lifted from one corner, but now it basically just jumps off the bed once you get to a certain point?

Posted : 20/02/2020 1:04 pm
Tony
 Tony
(@tony-8)
Active Member
RE: Spring sheet lifting during print !

Problem with binder clips is they would interfere with the large part being printed.

Posted : 20/02/2020 2:07 pm
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