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Not keeping nozzle temp
Posted: Tue Jul 07, 2015 11:38 pm
by house
Ok so im lost the hotend will get up to the temp I have set 210. And then about 10 mins into the print it will start going down. last print it got down to 175 before I quit the print. does anyone have any ideas.
Re: Not keeping nozzle temp
Posted: Tue Jul 07, 2015 11:47 pm
by IMBoring25
It could be very bad PID settings, but when you say you've had it get down to 175, I think it's probably what I've seen also...During periods when both the bed and hot end are at a high duty cycle, the power supply is not keeping up. First, though, make absolutely sure all your connections to the hot end and bed are clean and tight.
To compensate, I worked a little harder insulating the hot end from the PEEK fan, which made things much more reliable. Before i did that, I had one print that I got to successfully complete only by turning the bed setpoint down when I saw the severe dip in hot end temperature and back up after the hot end recovered.
Re: Not keeping nozzle temp
Posted: Wed Jul 08, 2015 12:09 am
by house
Ill check that thanks
Re: Not keeping nozzle temp
Posted: Wed Jul 08, 2015 12:52 pm
by Tincho85
Maybe this is a silly question, but are you using layer fans?
If they point to the nozzle they will lower the hotend temperature a lot and very fast.
Re: Not keeping nozzle temp
Posted: Thu Jul 09, 2015 1:08 am
by house
Thanks IMboring25 and Tincho85. I got it working.
Re: Not keeping nozzle temp
Posted: Thu Jul 09, 2015 6:58 am
by teoman
Do share how you solved it so others who read this post may benefit.