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Forever hot-ed bed ?  

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Pacapac
(@pacapac)
New Member
Forever hot-ed bed ?

Hiya,

Looking at the progress of my longest - so far - print (6h), at mid course, i realized that the hot bed was of course still hot and this made my wondered why we couldn't stop it after a few millimeters or centimeters to be energy efficient. Is the 60° still usefull after a given height ? Would it make the piece more prone to move if we stopped it ? Has anybody tried ?

Tx,

P.

 

Posted : 01/09/2020 11:01 am
Pacapac
(@pacapac)
New Member
Topic starter answered:
RE: Forever hot-ed bed ?

to better detail my concern, i mean stopping it for exemple after 5 centimeters, not 5 layers, so that we can't really change properties of bottom layers nor the heat transmission to above layers.

Posted : 01/09/2020 11:09 am
Clemens M.
(@clemens-m)
Noble Member
RE: Forever hot-ed bed ?

Because cooling down the bed after having reached some mm height in z axis would cause a shrinking of the bed and the printed part - but the printed part much more than the bed - this will make the printed part to become loose on the bed and falling off. So the bed needs to be heated the whole printing process.

Best regards, Clemens

Mini, i3 MK2.5S, i3 MK4, CClone (Eigenbau)

Posted : 01/09/2020 11:11 am
bobstro liked
Neophyl
(@neophyl)
Illustrious Member
RE: Forever hot-ed bed ?

The pei surface is designed so that filament sticks above a certain temperature and releases when cooled.  If you turned the heated bed off your part stands a very good chance of detaching and you would get either a blob or spaghetti monster which potential damage to your extruder hotend. 

Posted : 01/09/2020 12:38 pm
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