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New gen Heated bed with better heat distribution ?

Posted by Chri 
New gen Heated bed with better heat distribution ?
March 04, 2015 11:50AM
Hy guy`s

Alot People always struggle at having large prints sticking not very well to the print surface, as maybe some peolple know the actual MK1/2/3 heatbeds always have a uniform heatingzone, but with this the heat is for sure always more at the center than at the outer parts.

So i thought, why not make two heating zones. one center with less power per cm² than the second one on the outer corners with more power ?

Note: the following drawing is only a sketch of it, as i`m no electronics guy, i don`t know anything of the right layers and stuff.

the most outer line ist just the dimension of the bed, not a heating circuit.

Maybe someone knows a little bit more if this concept will work.

Chri

Edited 2 time(s). Last edit at 03/04/2015 11:53AM by Chri.

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Re: New gen Heated bed with better heat distribution ?
March 06, 2015 02:42PM
An interesting idea, certainly worth looking into and experimenting further. Keep in mind that the final resistance of the PCB heatbed (when hot) should be such that you get 10A from a <12V supply i.e. the resistance should be under 1.2 Ohms when the heatbed is hot.
Re: New gen Heated bed with better heat distribution ?
March 12, 2015 01:54AM
Yes, or just to make it with two circuits and then to make it switchable between 12 or 24 volts, like on the dualpower heatbeds.
I just can`t make such a PCB, i can only spend the Idea of it.

Chri


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