Ok, so whats wrong?

[Davek0974]

I fitted my 3d pile of bits together today and mounted the head on my CNC table but the results were less than useful?

I can't seem to get any material extruded, well practically none anyway.

Its just slipping the feed rollers, even with a hefty push by hand on the filament while the motor is jogging produces nothing more than a tiny blip every minute or so, you can feel the motor trying to feed.

I was expecting to see a thin thread extrude but not so.

I have tried raising the hotend temperature all the way to 250c but no change really.

The head is a 0.3mm one and i have uprated the motor as my drivers only go as low as 1.5A and the supplied motor was only 0.84A.

I calibrated the A axis by removing the hot end and feeding filament then measuring it etc that seemed the right way to set it?

I have speed in Mach3 set to 100 and acceleration to 20 i think.

The code seems to run fine at least.

Have i started out with a bad head or too small a nozzle for PLA??

Any suggestions?

This is the head BTW...
http://www.ebay.co.uk/itm/2910096471...84.m1439.l2649