1 Topic by Heartlander

  • Heartlander
  • Heartlander
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  • From: Kent from Kansas City
  • Registered: 2013-06-23
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Topic: Improved method of holding Thermistor?

I am (still) upgrading to the E3D Lite hot end. One thing I think could be improved is the way the thermistor attaches to the heater block. If you made a little holder like pictured below, out of a high temp material (ceramic?) and over bored the thermistor well in the heater block to 3MM, it seems this would be easier and more safe.

It would reduce the chance of breaking the thermistor, prevent grounds to the heater block, hold the thermistor bulb straight into the 1MM section at the bottom of the well and provide a hole for the lock screw to hold it all in place.

What do you think?

http://soliforum.com/i/?36iDe59.jpg
http://soliforum.com/i/?IHpAxfu.jpg
http://soliforum.com/i/?F1zNdiU.jpg
http://soliforum.com/i/?ypt6MKe.jpg

Robox printer, HICTOP (Prusa i3 variant) Model 3DP17 printer, ELEK 2.5W laser engraver, AutoDesk 123D Design, Windows 10

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2 Reply by carl_m1968

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Re: Improved method of holding Thermistor?

Not all thermistors have the same shape. They are hand dipped so the bulb varies alot. Some are longer, some are rounder and some are even like a ball. I would rather see all printers use a screw in thermocouple like mine does instead of a thermistor.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

3 Reply by Heartlander

  • Heartlander
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Re: Improved method of holding Thermistor?

Is it possible to tap the E3D heater block for a screw in thermocouple, i.e. could the settings be adjusted to accept it?

Robox printer, HICTOP (Prusa i3 variant) Model 3DP17 printer, ELEK 2.5W laser engraver, AutoDesk 123D Design, Windows 10

Heartlander's Website

4 Reply by elmoret

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Re: Improved method of holding Thermistor?

You'd need a thermocouple board:

http://www.filastruder.com/collections/ … board-v1-0

which adds expense, as well as the thermocouple itself. But most thermocouples are M3 thread, so you could thread one in without tapping.

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5 Reply by mdrVB6

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Re: Improved method of holding Thermistor?

I have had plenty of my own thermistor troubles too, but your system adds complexity.  It is just one more thing that could be put together wrong.  Even if it was bullet proof, I still don't think it would be worth it for most users.

SD4 w/ RUMBA, E3D Volcano, all bearings, glass bed

6 Reply by carl_m1968

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Re: Improved method of holding Thermistor?

mdrVB6 wrote:

I have had plenty of my own thermistor troubles too, but your system adds complexity.  It is just one more thing that could be put together wrong.  Even if it was bullet proof, I still don't think it would be worth it for most users.


I swapped out my motherboard to an Azteeg X3 Pro. It has built in support for thermocouples as does my dual MK10 extruders. So for me thermocouples was the only way..

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.