Ar last!!! Started my Gantry 3-Axis CNC Build

[MikeyC38]

Thanks Clive for your kind comments.

I've uploaded a YouTube video here showing the gantry moving in all axes at a magnificent speed of 1 metre/min!

Now that I've worked out how soft limits and emulated home switches work, I'll post a video of it working with a piece of real G-Code doing air cuts at this stage.

I've uploaded another YouTube video here running g-code for the first time. Programmed random rapid movements in the XY plane of up to 4500 mm/min. Now got the cable chains installed but had to unsolder all the stepper motor connections to fit the cable chain! doh!

[Clive S]

Almost there Mike sounds nice as well, keep up the good work.

[MikeyC38]

Have some more footage posted on YouTube here

Have temporarily given up trying to get my proximity switches to work :-( so using soft limits for now.

Question: I now have to tram the spindle head. I have a dial micrometer and a sheet of 10mm plate glass. Do I need to level the glass in absolute terms, then tram against the glass or just tram against the glass so that the spindle is correctly aligned relative to the glass?

Advice appreciated.

Thanks
Mike

[Lee Roberts]

That one:

or just tram against the glass so that the spindle is correctly aligned relative to the glass?

Looking forward to seeing how this machine performs Mike, it's very similar to mine.

[MikeyC38]

That one:



Looking forward to seeing how this machine performs Mike, it's very similar to mine.

Thanks Lee - relative tramming!

[Lee Roberts]

Thanks Lee - relative tramming!

Assuming your going to be laying the glass on the bed, placing indicator base on this, then rasing and lowering the Z, adjusting the spindle as you travel to keep "0" ?

[MikeyC38]

Assuming your going to be laying the glass on the bed, placing indicator base on this, then rasing and lowering the Z, adjusting the spindle as you travel to keep "0" ?

yes. Swinging the dial indicator left and right 180 degrees in the "Y axis" (short axis) direction, then front and back 180 degrees in the "X axis" (long axis) direction.