Setting an Offset in Mach3 for Laser Usw

Setting an Offset in Mach3 for Laser Usw

Postby Jim Sinacola » Sat Aug 31, 2019 10:12 pm

I just got a laser and it is attached to my Z axis.
I have used the Vectric offset and it works great, except if you forget to put in the offset in Aspire which is the easiest but just in case I would like to have the ability to put it in Mach3
1. How can I set up my laser offset for the X and Y axis in Mach3
2. Where it be stored, in like G55?
3. How would you access it?
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Re: Setting an Offset in Mach3 for Laser Usw

Postby TReischl » Sun Sep 01, 2019 1:53 am

first you need to determine the amount of offset required in both axis.

I created a laser post that has a G55 in the header instead of the G54.

So yes, you store the offset in the G55. I use screen set 2010 so it is easy to do.

After I zero the router spindle I move the machine by the amount of offest required, then I choose the G55 on the screen as the active offset and zero both axis. That stores the offsets and the G55 in the program makes sure they are used. Works good!

I added an M1 in the header too, so that I can see that I did not forget before starting.
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Re: Setting an Offset in Mach3 for Laser Usw

Postby Jim Sinacola » Tue Sep 03, 2019 2:03 am

Thanks for responding.

I have the offset determined and when I use it in Aspire, it works great.
Don't have the 2010 screen set though.
I'll have to look up the G codes you mention as I have not modified a Post Processor.
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Re: Setting an Offset in Mach3 for Laser Usw

Postby highpockets » Tue Sep 03, 2019 2:37 am

Ted,
Have you tried using the Zero to Laser Crosshair?
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Re: Setting an Offset in Mach3 for Laser Usw

Postby Jim Sinacola » Wed Sep 04, 2019 2:35 am

highpockets wrote:Ted,
Have you tried using the Zero to Laser Crosshair?


HighPockets, could you please your comment? Do you mean setting X,Y to the laser spot?

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Re: Setting an Offset in Mach3 for Laser Usw

Postby highpockets » Wed Sep 04, 2019 4:36 am

Sorry Jim, it's a Toolbar Button in Mach3 2010 ScreenSet. It allows you to setup an offset for your Laser crosshair.

Image 495.png
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Re: Setting an Offset in Mach3 for Laser Usw

Postby TReischl » Wed Sep 04, 2019 1:43 pm

highpockets wrote:Ted,
Have you tried using the Zero to Laser Crosshair?


Nope, I have not tried using it. Instead I use it everyday! LOL.

A bit of clarification is in order. There are two lasers on the machine. One is the spotting laser for setting zero, the other is the engraving laser. I was being cheap so I cannot control the power on the engraving laser and use it for spotting zero. Besides that, I mounted the spotting laser about 6 years ago long before I thought of using a laser to engrave.

Another thing to think about if a person is going to use one laser to both spot and engrave:

If you do that you will need to rezero when changing from laser to cutting tools, it is much easier to use an offset, that way the program does it automatically.
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