Cooldown feature request - Improvements (Archive)

RE: Cooldown feature request

-- — Mon, 26 Aug 2019 23:26:19 +0000

It just occurred to me that perhaps some of the "my filament melted to the PTFE" jams are related to folks printing something then just flipping the switch before the extruder is even clear of the part. If already in a warm room, the residual heat may just work up into the heat sink and upper end of the heat break and begin melting plastic.

RE: Cooldown feature request

Sembazuru — Mon, 26 Aug 2019 19:54:19 +0000

Personally, I watch for the extruder fan to stop spinning. If the fan is spinning, I figure that the hot end still needs active cooling to prevent damage to the plastic extruder body. Once the fan stops spinning I know it is safe to turn power off.

But, then, I usually leave my printer on all the time anyway because I've found that if my laptop can't find the drive-mapped FlashAir card I get poor performance. So, I have to waste a little electricity to get around a bug in Win10... >:-(

RE: Cooldown feature request

timo.m — Wed, 21 Aug 2019 15:23:24 +0000

Well, as it is now, you can watch the hotend temperature on the screen before switching it off and wait till it has reached <50°C or you could add a line to your end-gcode for the printer to wait until it is cooled down before, say, moving the build plate to the front. That way you would have a visual signal. You could also add a beep for that purpose.

Cooldown feature request

Michael23 — Wed, 21 Aug 2019 14:06:01 +0000

I would like a feature to cool down and acknowledge when its safe to power off the printer after printing. This would be in addition to the timeout that is currently there after the printer has been heating for a long time. Maybe even and eject filament and then cooldown to prevent melting of any of the extruder parts. I've noted this has caused the small piece at the exhaust downward side to melt and droop. I've replaced it twice due to this. I doubt it affects performance very much.