Solidoodle Press Print Quality (and how to fix it) (Page 2 of 3)

I adjusted mine last night, and found I needed to turn it almost entirely clockwise to achieve the best effect.

It always makes me nervous when something needs to be adjusted to one extreme...  Could someone direct me to a technical explanation of what exactly this trimpot is adjusting in regards to the stepper motor?

Thanks!

Sadly, I'm terrible at doing things by sound/ear.  The sound it makes I would describe as a high-pitched whine, the same as what the other steppers make when moving the X or Y axis.  At any other setting, I can hear individual steps/thumps.  There is one spot in the middle that seems to be quieter, but it still produces a significant amount of moire. and I wouldn't say I can even here a hum at that point.

Is there a way to do this with a voltmeter or oscilloscope?  (I have a cheap software oscilloscope, though my skills are very rusty).

Thanks for the assistance.

I adjusted mine this morning.  Same as yours Dream-Cypher, had to turn it all the way clockwise, but the rows look nice and straight now.

does here everyone have the problem uncalibrated trimpot ?

I've only done a few prints, really, but once I cleaned the bed and applied hairspray and gluestick (and cleared the extruder's CHOMPCHOMPCHOMP at the hobbed bolt), I got fairly reliable finished prints (with the supplied ABS). There's definitely artifacts throughout, but I haven't done ANY tuning short of doing one Z-axis calibration, so that's not especially surprising.
Worth noting : the first print post-hairspray was the friendly octopus, and it finished, although the transition to finishing the cap was not perfect by a long shot - but once it went to the actual cap, it was fine.

Ron, is this voltage or trimpot position?

Has anyone been able to get a smooth and consistent wall thickness after calibrating the trimpot?

I've calibrated mine (both by ear, then again by voltage) and my prints still show a slight moire which I cannot get rid of.  Any thoughts?

Well, I just saw in another thread that the Z-axis is free floating on the lower end. Would this have an effect on this?

soliforum. com/post/84737/#p84737

TruFord

Thats instructions on how to turn the screw. Not actually where to put the probes of the multimeter. That would be a more helpful picture to have.

How are you seeing the voltage? Is there an app that can read them? Or do you have to do it manually?

I tried changing the trimpot on the extruder. It didn't seem to change the voltage at all. Maybe I'm not measuring from the right location?

Totally unrelated.  The power at the printer is DC and regulated so, unless you have a really dodgy power supply (not unlikely), then the voltage should be the same so long as the input voltage to the power supply falls between 110 and 250V.  I think that they just set all the trim pots somewhere around 3/4 of full and just leave it there without actually testing.  These things are built CHEAP! VERY CHEAP!