Newly Installed E3D Problems (Page 1 of 2)

agree with moire.

you can read about it more here http://www.soliforum.com/topic/3491/ext … g-to-fail/

Is the E3D tight in the mount?

just checking...

The thing with the E3D is it is more precise to give exactly what is asked for from the electronics so basically every stepper pulse shows up on the print and is visible as moire, some people have gone to using higher resolution steppers to mitigate this effect... also tuning the stepper drivers can eliminate some of this visible phenomenon but your first pics look a bit different than that??? So I am not entirely sure it is moire or at least all of the problem...

+1 to moire and +1 to recalibrate. I had to fix both with mine too.

Just to be clear, there is not a problem with the extruder, it's just that it's more accurate and shows up other flaws in the system.

A good example of this is changing filament between colors. On the e3d the extruder colour changes from old to new in a very short distance. On the old extruder, I would need to complete small prints after changing from black to white to get rid the grey in between extruded filament.

My prints have looked like that since I got my SD3…until today!  I finally got the courage to adjust the extruder motor trimpot and my moire is 99% gone.  Unlike what I've read elsewhere, the solution was not to turn the trimpot up, but rather DOWN.  Here's what worked for me:
1) Locate the trimpot on the motherboard for the extruder motor (trimpots are the small white things that you can turn with a mini flathead screwdriver.  On my motherboard, the extruder trimpot is the highest one on the left side).
2) Turn it all the way down (counter-clockwise).  Should not take much force.
3) In Repetier, set your extrusion speed to 5 (slow), and extrude something like 25mm or so.  You should be able to hear the motor moving.
4) Slowly turn the trimpot up (clockwise) and listen for any changes in the motor noise.  For me, the motor started out smooth and started pulsing at around 45 degrees.  The pulsing is the sound of the motor jumping between steps (hence "stepper motor") and is also what causes the moire effect.  Anything above 45 degrees resulted in heavy pulsing (before this experiment, it was at 90 degrees).  Back the trimpot down to just barely under the threshold of where the pulsing starts.  Voila!  No more moire!!

Thank you all again for your help.  I was able to solder and install the new driver yesterday, and also retrim all of my stepper drivers.  The results are pretty noticeable.  I hope to get a new extruder stepper down the road and improve it even more.  Here are some comparison pictures:

E3D Hotend, 1/16 microstepping (Before):

E3D Hotend, 1/32 microstepping (After):

did you have to change the steps per min or anything else or just plug in the new driver??

Is there anyway to fix this with the Printrboard rev E ?  I got this problem after i put the e3d on and just now found this thread, This has been pissing me off, but now i have found the problem.
Thanks G

Or just adjust the VREF trimpots. .. there is no difference to the printrboard in this regard.... no changes to motors needed

You guys are AWESOME!!

My printer is fixed, after a long time trying to get this to work with the E3D, and now it is.
THANK YOU all for your help.
I owe you a drink.
Thanks G

Glad to see your getting some positive results.