Themistor of the bed plate

[Khayrisill]

I have a question about this thermistor.
Yesterday i set up the thermistor on the hole in the middle of the plate with RTV. I did not pay attention to the beginning but now we can see the thermistor through the RTV when you flip the plate. I don't know if it's a big deal if there is no RTV on it.

Thx.

[Qdeathstar]

Kind of, because when you print the plastic will stick to the thermistor and you might/will pull of the Thermistor when you are pulling off your print... You can put some more rtv on the topic...

[Khayrisill]

Hi,
But i have a glass plate to put on top off the bed. Right ?

[Qdeathstar]

Oh, yea.. Brain fart.. I'd still full in the area with rtv... Might affect temp readings...

[Khayrisill]

ok, so i 'll try to add some, but the hole it's already full. i think i push to much on the thermistor...

[Qdeathstar]

It isn't a huge deal... The hotend is where the rtv is really important...

[Xenocrates]

If the hole is full, and the thermistor is showing, then I wouldn't worry about more RTV. I might add a dab of a non-conductive thermal paste, such as Ceramique or Arctic Silver 5 (Most pastes are non-conductive these days, and it's only really an issue if there's a way for it to get to the leads of the thermistor) before clipping on a heatspreader. If you don't plan to buy or make a heat spreader, take 2-3 sheets of heavy duty aluminum foil, and put that down under the glass.

If you put the aluminum foil down, it will do the nameplate job of a heat spreader, but won't provide thermal mass to reduce oscillations. And the best part is, if you don't already have some foil and paste on hand it should be a cheap upgrade that produces more consistent prints over the whole bed.

[Khayrisill]

Thanks for the tips Xenocrates ! I have finally restarted correctly the installation of the thermistor.