Michael K Johnson on Nostr: I would love some expert physics help for #3DPrinting... In order to print at higher ...
I would love some expert physics help for #3DPrinting...
In order to print at higher bed temperatures on my largest #3DPrinter, I'm looking into embedding N42SH magnets in the print bed, which would let me go up to 150°C, instead of the current flexible magnet sheet that is limited to 90°C. Because neodymium magnets aren't actually great heat conductors, I'm thinking of getting small [K&J Magnetics 3/16" x 3/16" axial N42SH (D33SH) magnets](https://www.kjmagnetics.com/proddetail.asp?prod=D33SH ) so that most of the actual contact area is the aluminum bed that conducts heat well. I expect to put the magnets in a square array across the bed.
I can mill precise holes for them with my mill and sensitive depth stop. I think I could affix them with a high-temperature epoxy like JB Weld.
But I don't know enough about magnetic circuits to understand whether they should all have the same orientation or should alternate.
Should they be all oriented the same way?<code>N N N N N<br>N N N N N<br>N N N N N<br>N N N N N<br>N N N N N<br></code>
Or should they instead alternate orientations?<code>N S N S N<br>S N S N S<br>N S N S N<br>S N S N S<br>N S N S N<br></code>
Or does it actually not matter unless they are very close to each other?
Any and all expert knowledge gratefully received! ❤️
(If you don't know, please, no need to speculate; I'm pretty good at that part myself ☺)
In order to print at higher bed temperatures on my largest #3DPrinter, I'm looking into embedding N42SH magnets in the print bed, which would let me go up to 150°C, instead of the current flexible magnet sheet that is limited to 90°C. Because neodymium magnets aren't actually great heat conductors, I'm thinking of getting small [K&J Magnetics 3/16" x 3/16" axial N42SH (D33SH) magnets](https://www.kjmagnetics.com/proddetail.asp?prod=D33SH ) so that most of the actual contact area is the aluminum bed that conducts heat well. I expect to put the magnets in a square array across the bed.
I can mill precise holes for them with my mill and sensitive depth stop. I think I could affix them with a high-temperature epoxy like JB Weld.
But I don't know enough about magnetic circuits to understand whether they should all have the same orientation or should alternate.
Should they be all oriented the same way?<code>N N N N N<br>N N N N N<br>N N N N N<br>N N N N N<br>N N N N N<br></code>
Or should they instead alternate orientations?<code>N S N S N<br>S N S N S<br>N S N S N<br>S N S N S<br>N S N S N<br></code>
Or does it actually not matter unless they are very close to each other?
Any and all expert knowledge gratefully received! ❤️
(If you don't know, please, no need to speculate; I'm pretty good at that part myself ☺)