difficulty passing through hot end

[psd]

Hello,
I notice that when I feed flexible filament through my extruder it moves very well as it passes through extruder and as soon as it enters the hot end it slows down greatly.
Sometimes I need to push the material manually to help it along.

Do you think this is a problem with my nozzle or hotted?

Should I try removing nozzle and cleaning or replacing?

I have been having problems with prints lately and feel this may be a contributor.
I just ran some cleaning filament through and noticed it wouldn't pass well although the extruder was feeding smoothly until it hit the hot end.

thanks!

[sthone]

You may just be trying to feed it to quickly... flex filament should be printed at a slower rate... I run at 30 mm/s.

If your having problems with other filament though you may need to clean the nozzle as it might be forming a partial clog.

[psd]

Thank you, how do you set the print speed in simplify 3-D?

[sthone]

Double click on the process (lower left window it should say "Process1") then click the "others" tab and change the Default printing speed. If yours is set up mm/min rather than mm/s try "4800 mm/min.

[psd]

thank you, for flexible materials like ninja flex, do you think it helps to use a wider nozzle?
I am using .35

[psd]

Double click on the process (lower left window it should say "Process1") then click the "others" tab and change the Default printing speed. If yours is set up mm/min rather than mm/s try "4800 mm/min.

is that 180 mm/minute since that would be 30 mms/ second?

[sthone]

sorry that was a typo it should have read 1800 not 4800.... 30 mm/sec = 1800 m/min

[willnewton]

Also, when you are feeding/priming using the jog console only move 1mm at a time, 10mm at a time will cause a mess. It's too fast.