T-tracks for AltMill 4x2

conference · August 30, 2025, 5:02am

I’m a beginner to CNC and shop-work in general, although I’ve been around heavy machinery for the last 20 years working from the software side. I had a couple dumb questions on the wasteboard before buying an altmill.

I was trying to figure out the best way to make a t-track wasteboard for an AltMill 4x2. My current plan is to buy the 34” kit and chop them to size using a band saw. Is there a ready-made solution for this?

In addition, what’s the best method of squaring the t-tracks? There’s probably a good way of bootstrapping the machine to make it so the work for me.

Jens · August 30, 2025, 5:55am

If you run your t tracks along the x axis you can just buy 4 ft tracks and use them like that. If you want to run the tracks along the Y axis I would buy 2 ft tracks.

There are two ways that I would square tracks - you can cut your wasteboard slats and use them as spacers for the tracks or you can use the mill to pre-drill the track mounting holes in the base board of the mill. I don’t think tracks need to be installed ‘precisely’. If they are visually square then that is good enough.