Pronterface seems to react wrongly to manual extrusion command?

Hi guys,

I'm trying for the millionth time to callibrate my extruder. I just noticed that when I change the 5mm extrusion value in pronterface to, say 100mm...my printer doens't seem to extrude much longer than with the 5mm setting...what could be the reason here? The text monitor field does say "extruding 100mm of filament" though, but the extrusion time does not seem to change??

Hoping for you help,

greetings,

Sounds like it's way out of calibration.

well it must be, but for me to be able to callibrate, I must get a consequent result from each command I give to the extruder.

If I set it to extrude 5mm first
And then to extrude 10mm...well this second time the extruder operation time should be double the first, right?

and for some reason that does not happen...can anyone guess what causes this? The only thing I came up with is that Pronterface télls me it extrudes 10mm, but only gives a command for 5??

Triffid hunter calibration guide has the formula for extruder (and all other) steps. If youre doing it for the millionth time however there is something structurally wrong with your frame. are the belts and pulleys tight?

Hey Sungod3k,

There is nothing wrong with the frame. Let me put it this way:

I can leave the pronterface field on the default 5mm and press the 'extrude button' 4 times. The result = 20mm
I could also fill in 20mm and press the button once. The result seems to be only 5mm

==> the results are not the same, it seems like pronterface remembers the first value used and ignores the second value I fill in.

Quote
homecore
Hey Sungod3k,

There is nothing wrong with the frame. Let me put it this way:

I can leave the pronterface field on the default 5mm and press the 'extrude button' 4 times. The result = 20mm
I could also fill in 20mm and press the button once. The result seems to be only 5mm

==> the results are not the same, it seems like pronterface remembers the first value used and ignores the second value I fill in.

Why not try using Repetier Host and see if it is the same that should/will prove which is at fault.

HTH

Doug.

You have to tab to a new field for the new value to take effect.