G-code problem - M204

[SouthSideofdaSky]

South side - yes, it's basically the default simplify3D start code with a few extra lines added. It is part of the highly recommended RSilver PLA profile, which seems to be producing amazing results for others. I'm trying to print pretty small, intricate items and am pushing for as much quality as possible, hence I am trying to replicate where others have succeeded (why reinvent the wheel, right?).

What I am trying to mostly achieve is eliminate the zits when starting new layers, so the default retraction rate must been having some kind of positive affects as his demo prints looked flawless. Now, what increasing the default retraction acceleration does that adjusting the retraction rate in simplify3d doesn't, I am not too sure.

Well to be honest, I'm not sure either. I agree that it's good to replicate others who have succeeded...but it seems like a lot of people have been having problems with the "tried and true" profiles and the new V4 hotend.

My best advice is to still try the default g-code scripts first (without the M204 line) until you can consistently get good (even if not the absolute highest quality) prints. Then tweak from there. And Jules' settings are a great reference.

the new Z motor

I'm not sure what you are referring to here. I just upgraded from the V3B to the V4 and all of the motors stayed the same. There is a new Z endstop, but I'm not sure why that would affect anything.

I think one of the issues I was having with print quality is on the Other tab for the X/Y movement, mine was super high, like 9000. I think the stock profile is even higher. I want to say something in the order of 18000.

Yes, this is another good point. Turn down your X/Y movement.

[SouthSideofdaSky]

Well, I just tried adding the M204 line and mine still works the same - no weird z height problems. The mystery deepens...

Can you post screenshots of your settings tabs in Simplify3D like Jules did? Maybe that will help us get to the bottom of this. I am basically using the same settings as Jules.

[3dPrintingMD]

My point above about the motor was a way of saying, it really has nothing to do with the hotend. The hotend doesn't have anything to do with anything, other then the temps you extrude at.

I deleted what I just said, in looking at the profile there is nothing more than what is shown in the profile settings, so its something in that startup code.

I tried to figure this out a few weeks back, failed, gave up.

[Jules]

Running these settings tonight on a 4 hour print. I'll let you know how it does. Looks very good so far.

I think one of the issues I was having with print quality is on the Other tab for the X/Y movement, mine was super high, like 9000. I think the stock profile is even higher. I want to say something in the order of 18000.

Dammit! That X/Y speed setting is supposed to be 16,000 not 1600. (Really hate how that thing handles adjustments sometimes.) The X/Y movement isn't critical here. You can leave it at 9000 or go even higher. That's just a non-printing travel speed. (I'll see if i can fix it - this is why i hate posting screen shots.)

My bad - I should have caught that before i posted it.

[SouthSideofdaSky]

The hotend doesn't have anything to do with anything, other then the temps you extrude at.

Probably true, but the fact that this problem is something that seems to be occurring only with the V4 makes me suspicious anyways.

Dammit! That X/Y speed setting is supposed to be 16,000 not 1600. (Really hate how that thing handles adjustments sometimes.) The X/Y movement isn't critical here. You can leave it at 9000 or go even higher. That's just a non-printing travel speed.

Well some people have said that if you have it too high, there is a possibility of the print shifting, right? I have mine at 9000. But yeah, 1600 is pretty slow.