Welcome! Log In Create A New Profile

Advanced

Bed doesn't heat without lamp over it

Posted by budrow01 
Forum List Message List New Topic
budrow01
Bed doesn't heat without lamp over it
March 28, 2016 10:16AM
The bed on my prusa i3 doesn't hold it's temp at 110 degrees C once the print has started. I have a reading lamp over it while heating up to help it heat faster but when I take it off the temp starts to drop. It can't hold it's temp without help from a reading lamp. I can't have it over the bed during the print because it would hit and bump into the print. The bed hovers around 90 degrees but doesn't stay at the target 110. Thanks
Reply Quote
kr_
Re: Bed doesn't heat without lamp over it
March 28, 2016 04:24PM
You may need some sort of thermal insulation under the bed. You can use a cork sheet.
Reply Quote
stephenrc
Re: Bed doesn't heat without lamp over it
March 28, 2016 04:41PM
Is the bed getting the full voltage and it's insulated underneath?
Reply Quote
budrow01
Re: Bed doesn't heat without lamp over it
March 29, 2016 04:10PM
It's getting the full 12 volts
Reply Quote
budrow01
Re: Bed doesn't heat without lamp over it
March 29, 2016 04:13PM
You know how it has 3 inputs and it says for 12 volts port 1 needs to be positive and 2 and 3 need to be negative. I did all of that and checked it. No, it isn't insulated.
Reply Quote
budrow01
Re: Bed doesn't heat without lamp over it
March 29, 2016 04:14PM
Cork sheet seems to be pretty expensive.
Reply Quote
budrow01
Re: Bed doesn't heat without lamp over it
March 29, 2016 04:15PM
I'm also having bad warping issues.
Reply Quote
stephenrc
Re: Bed doesn't heat without lamp over it
March 29, 2016 05:52PM
I'm using fiberglass based pipe wrap to insulate under my heat beds.
Reply Quote
budrow01
Re: Bed doesn't heat without lamp over it
March 29, 2016 09:48PM
Sorry, just looked at one listing. It's not that expensive.
Reply Quote
Newer Topic Older Topic
Sorry, only registered users may post in this forum.

Click here to login