Using IR Probe on Glass Bed

  • I hope this may help others.
    I use a glass bed on top of an aluminium heated bed with my IR probe. I placed a sheet of matt black paper under the glass but was getting some unexpected and inconsistent height maps, not unworkable but not as good as I expected having checked the bed with a dial gauge. So I have now painted the aluminium matt black and the results are now what I expect every time!
    Can't explain it because the paper was matt and I tested it to make sure it was opaque to IR ( I have experienced that problem with inkjet printed paper, amongst other materials, before).
    If there is a definitive explanation I would be glad to hear it.

  • administrators

    Interesting, I've not heard of that happening before. Perhaps the black paper wasn't black enough.

    The ideal would be to use black glass, but it seems to be difficult to obtain.

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