1 Topic by Claghorn

  • Claghorn
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  • Registered: 2012-10-22
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Topic: Anyone ever used a temp sensitive sticker to calibrate bed temp?

I remember seeing shock stickers for packages, so I wondered if there were also temperature sensitive stickers, and by golly there are:

http://www.temperaturelabels101.com/

Anyone ever used these to try to calibrate the temps reported by the heat bed thermistor versus the temps actually present on the surface of the heatbed (especially if thick glass or something has been added)?

Just a thought. Don't know if it is actually useful :-).

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2 Reply by jagowilson

  • jagowilson
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Re: Anyone ever used a temp sensitive sticker to calibrate bed temp?

I use an IR thermometer. On my SD4, the temps have been right on the money. Wish I could use it for the nozzle as well, but I can't get the thermometer to aim at such a small surface--the beam is on it, but the IR sensor reads aroind it and just shows me ambient temperature. The IR thermometer I have is cheap, so that's probably part of it.

3 Reply by pirvan

  • pirvan
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Re: Anyone ever used a temp sensitive sticker to calibrate bed temp?

We used to use those in the computer industry. 

We would put them between the CPU and the heatsink to check the actual temps of the CPU.  Back then they were not as sophisticated as the ones you linked to but they worked.  They looked like thin square pads with a white dot on each corner, and each dot had a temp value.  If the dot turned red, that temperature was tripped.  They were not reusable.

I remember them being pretty expensive back then (like $3-4 per pad).  Today we rely on built in sensors or IR thermometers.

An IR thermometer can be pretty useful, especially if you use it correctly. Not to mention a hell of a lot cheaper than using non-reusable/consumable pads and such.

To print or, 3D print, that is the question...
SD3 printer w/too many mods,  Printrbot Simple Maker Ed.,  FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.

4 Reply by Tomek

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Re: Anyone ever used a temp sensitive sticker to calibrate bed temp?

If you really want to calibrate your bed sensor, you can use a thermocouple attachment for mid-range voltmeters.

But chances are if you have setup the bed sensor correctly, and uploaded the firmware accordingly, then the table the thermistor comes with is pretty accurate.

If you have your sensor far from the surface of the print bed (say, because you have a glass plate on top of your print bed), then you can justify recalibration sort of, but its still not really needed. just add a few more degrees to your setpoint.

just my take