We updated the temperature control ( hotend ) documentation safety section to be clearer, and include more options for safety, and reflect the latest changes.
If you read, and implement the safety precautions described on this page, you can make your 3D printer much safer.
We strongly recommend you do so, and give us feedback.
am having a slight issue with the runaway heating timeout for the bed om my printer.
i timed that my bed takes 5 minutes to get to full temperature so added 25% to that and set:
at a guess the timeout was triggered before the 3 minute mark. so i increased the number to 800 (over 13 min of heatup time) but it then triggered even sooner. perhaps before 2 minute mark. Is there anything i may be doing wrong?
Yes, there is a maximum value at 255, and higher values will cause problems. We should add code to detect this.
I want to remark though, if your bed takes 5 minutes to heat, I don’t see how it could be a fire hazard ( it’ll never reach dangerous temperatures ), and therefore this is not even necessary.
Thank you for the info… I’ll turn that feature off. Although it would have been good to have in my situation. My bed is a relatively thick piece of aluminium so takes a long time to heat up. But is capable of getting above 200c…
I understand my printer isn’t the norm though.
Please extend the timeout range! I faced the same issue and I feel it will be a quite common problem on big printers. I have 410x420x6 mm aluminum bed that heats up around 5-7 minutes using ~1000W heater. The maximum temperature of such setup can also be hazardous high.
Anyway, the limit of 255 should be specified in the documentation.