Newbe - Calabration advise needed

[deleteallusers]

Hi,

I’m very new to CNC machines and G-Code programming, I need some advise.
I have completed my first CNC machine. I’m using Mach3 with Xylotex 3-axis driver.

I’m trying to figure out coordinate systems so that I can create/use g-code programs to make parts and stuff (use my machine).

I’m confused about g-code programs and machine calibration in general.

QUESTION #1.

Is it required and normal to always calibrate the machine to the specific g-code program?

For example, I’m having trouble running the Roadrunner program; my machine is always going out of bounds. And I don’t know how to home my machine to the correct starting point so the program will run correctly.

Or is there a general calabration process that will solve all these problems ?
If so, where can I find a clear tutorial on how to do this ?

QUESTION #2

I have limit switches, it looks like some of the X-3.8999 stuff is always going to trigger my limit switches. What do I do. I’m confused.

I have reviewed the setup on my mach3 software, but I’m confused as to the general nature of what is going to be required to calibrate my machine, or as to why I can’t run the roadrunner program (and other programs correctly).

Thanks for helping.

[deleteallusers]

Ua... is this a totaly stupid question ? it can't be that no one knows ?

Thanks

[ger21]

#1
The roadrunner is probably bigger than your machine. You shouldn't need to calibrate anything. Just zero your machine in the appropriate place relative to your part. If you have home switches, you can set up Mach3 so that 0,0 will always be the same when you home the machine. Use that 0,0 to position your parts properly.
You'll need to make sure the g-code you use does not exceed the limits of your machine.

2)

Move your 0,0 point so that you don't exceed the limits. However, it sounds like the part may be too big for your machine. You can use the scale DRo's next to the position DRO's to make it smaller so that it will fit.