1

(Crap, I’m gonna have to re-write this whole thread because the website logged me out. This will be briefer than that first one)

There’s an issue with my thermistor or something similar.

I’ve owned an off-brand Prusa i3-style printer for a year and a half. I purchased an E3D V6 clone, which seemed fine. However, my prints have always been weak, until I recently suspected and discovered that my hotend is actually colder than what the printer is reading. I bought an IR thermal gun and took several measurements from various angles and at different temps.

The Printer temp was set at and read:

1. 250C

2. 200C

3. 150C

4. 100C

The IR gun (at the highest measurement within each temp setting) read:

1. 220C

2. 170C

3. 130C

4. 85C

This showed that the actual temperature was around 85% of what the printer read.

I’ve always printed with ABS and my printer set to around 240-245C, but to get the hotend to the right actual temperature, I have to set the printer to it’s max, 260C, which the IR gun reads as about 235C. That means I can’t print Nylons, PETG, and even some higher-temp PLAs.

Since I had to scratch up what I first wrote from memory, I probably left a couple important bits out, but I hope this explains the situation well enough.

Any help would be appreciated! :slight_smile:

Thanks,

-Jonathan