SoliForum - 3D Printing Community — Moire Problem

Re: Moire Problem

null@example.com (joaquin.picci) — Tue, 25 Apr 2017 15:45:05 +0000

i bought 3 TL smother

Re: Moire Problem

null@example.com (carl_m1968) — Tue, 25 Apr 2017 13:52:06 +0000

joaquin.picci wrote:

heartless wrote:
yes, fine tune the stepper driver voltage for the extruder motor. that is most likely where your moire is coming from.

What should i use for DRV8825 in a MK7 direct drive system?

There is not a set value. You must find the correct value for your machine. Adjust it a bit and see if it gets better or worse and then adjust again accordingly.

Re: Moire Problem

null@example.com (heartless) — Tue, 25 Apr 2017 13:50:07 +0000

i simply tune by performance & appearance while the printer is running.

set it up to print a single wall cube - no infill.
then while it is printing, adjust the voltage down (using either a ceramic or plastic screwdriver - NO metal!) until the moire goes away - or until the the extruder motor starts skipping - whichever comes first... small increments have a big impact so go slowly

it is one of those things that you "should" be able to tune out if you are patient, but sometimes it will not go away completely without other consequences.

if the motor starts to skip steps, you will want to turn it back up a little

Re: Moire Problem

null@example.com (joaquin.picci) — Tue, 25 Apr 2017 13:45:43 +0000

heartless wrote:

yes, fine tune the stepper driver voltage for the extruder motor. that is most likely where your moire is coming from.

What should i use for DRV8825 in a MK7 direct drive system?

Re: Moire Problem

null@example.com (heartless) — Tue, 25 Apr 2017 13:44:16 +0000

yes, fine tune the stepper driver voltage for the extruder motor. that is most likely where your moire is coming from.

Re: Moire Problem

null@example.com (widespreaddeadhead) — Mon, 24 Apr 2017 17:07:11 +0000

I'm no expert, but my SD2 has this same issue and it's been recommended to me to fine tune the voltage for the stepper motor that drives the extruder.

Moire Problem

null@example.com (joaquin.picci) — Mon, 24 Apr 2017 16:07:23 +0000

Hello from Argentina. I've a Self made vulcanus with MK7 direct drive extrusion system and i have a big problem called "Moire"

In big prints like the botom image i dont care of it.. it creates a cool diagonal surface.

When i print small objects in high quality the surface is awfull... Here you can see a print with 1/32 DRV pololu:

Here you can see another image.. the left one is a 3d printed piece using 1/32 DRV and in the right a piece with 1/16 A4988 pololu