Mini+ Temperature possibly wrong?  

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Owt From Nowt
(@owt-from-nowt)
Active Member

I'm not a newb, been using a Mk3S for years.

My mini+ HAS to run at 230C and 90% speed or the PLA "freezes" in the hot end. 

I've already done several cold pulls, replaced the hotted PTFE, replaced the nozzle, repeatedly cleaned the hot end, and added a bondtech extruder.  Still HAS to run at 230C and 90% speed.

Any ideas why this would be the case? Could the unit registering the temperature of the hotted be incorrectly calibrated?

Posted : 11/02/2021 3:54 pm
technogeeky
(@technogeeky)
Eminent Member
Posted by: @owt-from-nowt

I'm not a newb, been using a Mk3S for years.

My mini+ HAS to run at 230C and 90% speed or the PLA "freezes" in the hot end. 

I've already done several cold pulls, replaced the hotted PTFE, replaced the nozzle, repeatedly cleaned the hot end, and added a bondtech extruder.  Still HAS to run at 230C and 90% speed.

Any ideas why this would be the case? Could the unit registering the temperature of the hotted be incorrectly calibrated?

I have a NIST calibrated thermometer; I will check mine and see and report back.

There are some PLA (PLA+) which I use which actually have higher temperature requirements, but I suspect you have excluded that.

In the meantime, can you check for an independent sign that the temperature is wrong? If you print PLA at "too high" of a temperature, then it should result in more stringing. Perhaps if you could run some stringing tests at 230,235,240 and see. If even at those high-for-PLA temperatures, you have no stringing at all, then that could lend credence to the idea that temperature isn't calibrated correctly.

Posted : 11/02/2021 5:21 pm
cwbullet
(@cwbullet)
Illustrious Member
Posted by: @owt-from-nowt

I'm not a newb, been using a Mk3S for years.

My mini+ HAS to run at 230C and 90% speed or the PLA "freezes" in the hot end. 

I've already done several cold pulls, replaced the hotted PTFE, replaced the nozzle, repeatedly cleaned the hot end, and added a bondtech extruder.  Still HAS to run at 230C and 90% speed.

Any ideas why this would be the case? Could the unit registering the temperature of the hotted be incorrectly calibrated?

Which heatbreak?

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Chuck H
3D Printer Review Blog...
Posted : 13/02/2021 2:54 am
Owt From Nowt
(@owt-from-nowt)
Active Member

@cwbullet

the one it was shipped with.

Posted : 17/02/2021 1:36 pm
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