SoliForum - 3D Printing Community — Is this all backlash or am I missing something else?

Re: Is this all backlash or am I missing something else?

2015-02-23T14:18:00Z

Well the accel change made things a little prettier, and happily less noisey sitting next to my head on the other desk... But didn't fix the issue at all. Seems that downwards was the wrong way for the extrusion multiplier. And support is still being weird.
So. Tomorrow we'll be back to the part in the first pix. O_O

Re: Is this all backlash or am I missing something else?

2015-02-23T06:43:23Z

I use 500 as my maximum acceleration in all possible acceleration settings except z at 100 and I haven't had any problems with ringing for a while now. Just for reference, my max speed is about 60 but I'm thinking about bumping that up soon.

Re: Is this all backlash or am I missing something else?

2015-02-23T04:21:00Z

@jago if it helps I don't always give you all my secrets

Re: Is this all backlash or am I missing something else?

2015-02-23T02:55:06Z

wardjr wrote:

If it helps I am using Adrian's numbers too Soo...

1000 is the default in adrian's firmware

Re: Is this all backlash or am I missing something else?

2015-02-23T02:44:51Z

wardjr wrote:

If it helps I am using Adrian's numbers too Soo...

I miss that guy...Need him to write my azteeg firmware *still too bloody useless at writing firmware*

Re: Is this all backlash or am I missing something else?

2015-02-23T02:25:59Z

If it helps I am using Adrian's numbers too Soo...

Re: Is this all backlash or am I missing something else?

2015-02-23T02:11:32Z

Right, I'll turn it down to 1000. I assume it was at 3000 because thats what Adrian set it as in the firmware he wrote for me... But I could be wrong. That said, isn't the OrdBot meant to be able to do super fast acceleration?
TO EXPERIMENT!

Re: Is this all backlash or am I missing something else?

2015-02-23T00:29:31Z

Not sure if this will help, but I have this in my custom gcode:

M201 X1000 Y1000; // max accel print
M202 X1000 Y1000; // max accel travel
M204 S1000; // default accel for normal move

Re: Is this all backlash or am I missing something else?

2015-02-23T00:28:08Z

3000 mm/s^2 seems awfully fast. I use 1000mm/s^2 myself which is the Marlin default. I experience ringing but not as significant as I see in your prints. Running external perimeters slower helps quite a bit with it, also. How fast do you print them? For a nice finish I find 40mm/s to be fine. The faster you go, the more inertia you have to bring to a stop.

Re: Is this all backlash or am I missing something else?

2015-02-23T00:10:31Z

Something else popped up in my question for answers.. Pull from the filament spool being too taunt.

Mmm, indeed, AZERATE. I've switched to the experimental Slic3r, I'll be doing another 10 hour print later today.

Re: Is this all backlash or am I missing something else?

2015-02-23T00:06:55Z

So I loosened my belts a touch (after tightening with disaster) and I finally completed a print.
Because I use linear bearings, it may very well be some of the balls binding (I gave the cheap Chinese ones a chance, sue me!), but I cannot confirm that 100% until I get some better quality ones in.

Another idea, during a discussion I had with jagowilson, he said Slic3r may create shifts upon layer changes even if it shows proper in 3D view.
I have nothing to add to Ian's recommendation. Just wanted to post in hopes it may help another.

Re: Is this all backlash or am I missing something else?

2015-02-22T23:35:13Z

Its running at a very slow speed at the moment, about 80mm/s is the fastest speed, but I'll turn it down a bit to test it.
Acceleration is at 3000 in the EEPROM, jer X-Y is at 20 and Z is at 0.40. I've not fiddled with those settings before, any suggested numbers?

Re: Is this all backlash or am I missing something else?

2015-02-22T23:28:21Z

There is enough other ringing in the print, I wonder if that has something to do with it. Have you tried half speed, or messing with acceleration/jerk?

Re: Is this all backlash or am I missing something else?

2015-02-22T22:05:26Z

You know you want fishline, it's the perfect compliment to that new AC bed heater

Re: Is this all backlash or am I missing something else?

2015-02-22T22:01:01Z

wardjr wrote:

Serin wrote:
wardjr wrote:
Ha! Belts are SOOO 2013
Has anyone done the string thing on an Ordbot though? I sooo don't have the presence of mind to work it all out
AZERATE, yep. I'll first try just eliminating the support material on one of the parts then get on to the tension settings.
Maybe we could talk IronMan into trying line on his Ord.

Hah! GT20 is here to stay