Sloppy text

[danielkeith]

Hi everyone,

Let me start off with I 100% new to this.  I bought a Carve King a few months ago, work never allowed me enough time to spend on it.  I have had some spare time over the past couple of weeks to start playing with it.  I bought it for a hobby and also I would like to make cable tags for the electrical industry.  I built a enclosure for the electronics and the power supply for the 400W spindle also extended the stepper motor cables and the spindle cables (did not use STP).  I tried to cut some test tags and the print was sloppy, lines don't mate up, print will change size and generally it is just poor results.  I did some fine tuning on the machine and got the x, y, and z tuned in, still poor results.  I took my enclose apart and wired it up as per instructions (no extensions on stepper cables), still poor results.  I took the spindle cable out of the wire track and isolated it from the other cables, also no AC lines anywhere close, no change.  I have also tried fooling around with the v wheels with no change.  I unknowingly started using UGS 1.0.9, so I switched to 2.0, no change.  I am using Vectric cut 2D.  I have attached some pictures, I am using old lamacoid tags from a old job  learn on so I am cutting over existing.  Any help would be muchly appreciated.


Thanks 

Attachments:

[Derek the Admin]

Can you post the g code? It might be feeding too fast, but I doubt it.

I think it's mechanical versus electrical. It seems to me like one of a few things:
Router is loose in the mount (I doubt this one, worth a check though)
V Wheels are loose (possible, also doubt)
My main suspicion is that one side of the Y drive is binding up, cause the gantry to lurch ahead of the other. You can see it in the way the vertical portion of the T isn't vertical, put sweeps. I'd guess the right side is lagging the left. Likely causes are a stepper driver getting too hot and going into momentary thermal overload protection (is the fan blowing on them?), an antibacklash nut that is too tight, Y rails not parallel, V wheels too tight causing stutters, or bad motor. The motor is the least likely but it's a possibility. Also it's possible that one of the motors isn't tight to the mount or one side is slipping in the coupler (either the screw or the motor shaft).

Hope that helps.

[Big Man Black T-Shirt(Patrick)]

With everything pulling left, I'd have to agree with Derek. It looks like a mechanical bind. Just for the hell of it, does the text look OK when you run it through something like CAMotics or other 3rd party simulators?

[Bruce]

I had a bit of wobbly cutting going on and found I had loose wheels on the Z axis. Then found the bottom two on the Y gantry was loose too. Surprising the difference when all the wheels are snug on the rail.