Mach3 control and no continuous jog

[George M]

I'm not at the machine today. Will have to look at it tomorrow. I haven't noticed any problem with my latest CNC projects doing 3d though.
It's been a few years since I built it. I will have to look at my notes to find the pitch.

Thanks for your help in this.

[Picengravertoo]

Spindle carving may not show slight deviations in the mechanics, but raster laser engraving photos surely will.

It's not necessarily the Rack & Pinion pitch causing it, but could be periodic wear to the teeth, or how precise the teeth mesh with each other.

We tried attaching a laser diode to a Plasmacam machine which has a Rack & Pinion drive also and the quality of the laser photo engravings were not very desirable.

[George M]

Well I finally had time to get back to this. Not encouraging to see what you had to say about rack and pinion machines.
Anyway I tried 45d. Results are worse. Not only do I have the vertical lines but now also 45d lines. I also made sure I put in on a portion of my bed that has not had a lot of work done to avoid wear points.
Here is a picture of the new burn. Nothing else changed except the direction.

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George

[Picengravertoo]

Here is the laser we built mounted on a PlasmaCam and the results we achieved with it. We just could not get sharp quality results.

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[George M]

Looks similar to mine. Well guess I'll have to figure out what options I have.
Thanks for your help in all this.