Heatbed stalls @ 92c

elwood127

Heatbed stalls @ 92c
May 29, 2015 01:43AM

Registered: 9 years ago
Posts: 705

Out of the blue my temp fluxuates between 90 and 92 when set to 100c. Used to go where ever I asked it. Power supply tanking? Melzi board dieing? It's the latest version. Abs not wanting to stick as well. Plexiglass I3. Thanks.

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elwood127

Re: Heatbed stalls @ 92c
May 29, 2015 01:53AM

Registered: 9 years ago
Posts: 705

Now it's up to 97. Took about 15 minutes to gain 5 degrees.

Edited 1 time(s). Last edit at 05/29/2015 01:54AM by elwood127.

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elwood127

Re: Heatbed stalls @ 92c
May 29, 2015 02:16AM

Registered: 9 years ago
Posts: 705

Hey I'm up to 100 but took forever.

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o_lampe

Re: Heatbed stalls @ 92c
May 29, 2015 02:27AM

Registered: 8 years ago
Posts: 5,232

Bad contact somewhere causing voltage drop?
When I tried to get 100° fisrt time, I raised the voltage up to 14V because I was stuck at 90°. The last 10° took about 2 mins only!

After that test, my thermistor acted weird, sending false temps intermittendly. I found, that both wires to the thermistor had become unsoldered.
-Olaf

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elwood127

Re: Heatbed stalls @ 92c
May 29, 2015 02:37AM

Registered: 9 years ago
Posts: 705

Where are you adjusting the voltage? PS or control board? Thanks.

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o_lampe

Re: Heatbed stalls @ 92c
May 29, 2015 02:49AM

Registered: 8 years ago
Posts: 5,232

I have a modified meanwell 350W PS. I can crank up the voltage beyond 14V.

Unfortunately, I also use this PSU to power a 12V halogen lamp. So I have to print in the dark, when using more than 12V. eye rolling smiley

-Olaf

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slanwar

Re: Heatbed stalls @ 92c
May 29, 2015 09:46AM

Registered: 8 years ago
Posts: 108

My heatbed was taking about 1 hour to reach 105 C and soon I started printing the temp was going down, replaced the wires with 14 gauge wires and in 10 minutes is already 100C.

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elwood127

Re: Heatbed stalls @ 92c
May 29, 2015 08:53PM

Registered: 9 years ago
Posts: 705

Thanks guys. Off to get some bigger wire.

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slanwar

Re: Heatbed stalls @ 92c
May 30, 2015 01:48PM

Registered: 8 years ago
Posts: 108

Now I have the same problem but only after I updated the marlin version, soon reaches 94C stays there and would take at least 1 hour to reach that temperature, is not the wires so has to be Marlin the problem.

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Floyd

Re: Heatbed stalls @ 92c
May 30, 2015 11:23PM

Registered: 10 years ago
Posts: 770

Check your thermistor value for the heated bed in Marlin.

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slanwar

Re: Heatbed stalls @ 92c
May 31, 2015 01:49AM

Registered: 8 years ago
Posts: 108

I had to change the value from 6 to 1 on my configuration file

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elwood127

Re: Heatbed stalls @ 92c
June 01, 2015 08:06PM

Registered: 9 years ago
Posts: 705

Where are thermistor values being changed? Gcode?

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slanwar

Re: Heatbed stalls @ 92c
June 01, 2015 08:22PM

Registered: 8 years ago
Posts: 108

No I changed the value in the config.h file

#define TEMP_SENSOR_BED 1

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elwood127

Re: Heatbed stalls @ 92c
June 05, 2015 06:07AM

Registered: 9 years ago
Posts: 705

I feel like a dork. Where is that file. As in Windows/ start/ run???

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o_lampe

Re: Heatbed stalls @ 92c
June 05, 2015 10:27AM

Registered: 8 years ago
Posts: 5,232

Quote
elwood127
I feel like a dork. Where is that file. As in Windows/ start/ run???

More like:
github/ search / Marlin smiling smiley

and
arduino.cc / download / ArduinoIDE

-Olaf

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tadawson

Re: Heatbed stalls @ 92c
June 05, 2015 03:20PM

Registered: 9 years ago
Posts: 606

And it's actually Configuration.h . . . in the top of the Marlin source tree, editable with the Arduino tool kit.

So look where you chose to put Marlin, or let the tool take you to it.

- Tim

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elwood127

Re: Heatbed stalls @ 92c
June 05, 2015 06:20PM

Registered: 9 years ago
Posts: 705

Thanks. I'm not using Marlin. Another question, how the heck can I print hollow. I set Slic3r to 0% infill and it keeps filling. In Cura which I prefer, there is no way to eliminate infill. Been trying to print a spiral vase but can't get it hollow. Thanks. Brian.

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IMBoring25

Re: Heatbed stalls @ 92c
June 05, 2015 06:28PM

Registered: 9 years ago
Posts: 351

Spiral Vase requires one perimeter, 0% infill, no solid top layers, no support material, and only a single object.

More generally, Solid Infill Threshold Area may mess you up if you're printing something with small cross-sections.

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o_lampe

Re: Heatbed stalls @ 92c
June 06, 2015 03:38AM

Registered: 8 years ago
Posts: 5,232

Quote
elwood127
Thanks. I'm not using Marlin. Another question, how the heck can I print hollow. I set Slic3r to 0% infill and it keeps filling. In Cura which I prefer, there is no way to eliminate infill. Been trying to print a spiral vase but can't get it hollow. Thanks. Brian.

In Cura you have to open the expert mode and choose "black Magic" print. Don´t forget to deselect it next time, when you want infill eye rolling smiley

-Olaf

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elwood127

Re: Heatbed stalls @ 92c
June 06, 2015 08:06PM

Registered: 9 years ago
Posts: 705

Thanks guys.

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