The Mini Mill is live

I picked up a 7×7 mill from Zen toolworks a while ago. I did the basic assembly and powered it up with an old 24v power supply. It moved, but locked up on the far X axis, and the far Y axis, and stalled with any high speed movement. At that point it all got boxed up for a house move, and stayed that way for a year. I’ve recently dragged it back out and thrown some more time at getting it setup.

I lined up the bottom frame using a machinist square. It was close enough that I could just shim out one corner with a piece of paper. The stepper motors  pull more power the faster they run. The old 2.5 amp 24V psu wasn’t providing  enough power as the acceleration kicked in. I’ve swapped it out for new 14.6 amp 24v psu. I still found some issues with the alignment of the anti-backlash nut on the Y axis. The problem with this is that you can’t easily access the anti-backlash nut. After a good look around the machine, and I decided to remove the 16 screws securing the back plate from the gantry. I could then access the mounting screws for the anti-backlash nut by loosening the  mounting screws and moving it to the far side of the Y axis. I could then tighten the mounting screws with the anti-backlash nut in the correct alignment.

Also, I got a video cam for my birthday, so here’s a time lapse of the job progress.

Jeri Elsworth is being awesome. Again.

Jeri Elsworth is awesome. She makes things that would make most makers balk and give up before they even start. From building race car chassis, to home semiconductor experiments (Want to make your own transistors kids? I know you do!), she will have a go. Sometimes she wins, and sometimes not, but she always takes the time to document it so we can all learn.

Her new venture is an amazing set of 720p (per eye) Augmented reality/Virtual reality glasses. The team is, Jeri on hardware, Rick Johnson (game development guru) on software, and Toby the cat (roll unknown).

Sure, I’m going to be poor for a while, but I’m going to be one excited geek when they arrive next September!

You can check out the detail on the Kickstarter page or on the company web site.