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Ender 3 bed element removal

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picclock:
Has anyone removed the original bed element from an ender 3?

I want to replace it with a silicone pad heater, but am reluctant to just stick it over the old one.
The original construction looks like it has been printed overwith a high temp ink ? maybe epoxy. The element looks like its just copper with kaptan or ink insulation.

Any other help much appreciated.

Best Regards

picclock

picclock:
On further investigation it appears that there is a gray insulating layer of filled epoxy or similar(?) between the copper element and the Aluminium. It is quite hard and I have been unable to find a solvent. 

I have 4mm aluminium in 'stock' so I have the option of sticking the heat pad over the old element, removing the insulation/element by mechanical means or making a new bed.

Thanks for your interest

Best regards

picclock
 

russ57:
Sounds like a new bed would be best. Sticking over the old seems like potential for uneven heating.

-Russ

picclock:
@Russ57
Rather annoyingly, the bed is 3mm thick, and whilst I have good stocks of 2 and 4mm The remaining pieces of 3mm are too small  :palm:.

I may attempt to machine the rear surface of the original with a flycutter - nowt else to do with lockdown.

Best Regards

picclock

russ57:
Would the extra mm be a problem? Give better heat distribution.
But milling the old clean should work OK, although irreversible...

-Russ

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