John's Alu Profile build

[Evengravy]

After getting no response from the laser cutting service on quotes I decided to have a route around in my stock and found some appropriate stock to mill some of the new parts myself.

Yesterday I went ahead and milled two new motor brackets with spacing to suit the new Y ballscrews. Material is 6082 Aluminium which machines rather nicely with a single flute carbide end mill, I just have to slow things down a lot on my Momus CNC and use small diameter cutters as the Z axis is prone to flex.

I can still achieve pretty accurate results though, it just takes time. I can't wait to have a stronger machine that can make use of adaptive tool-paths.



I hand tapped threads with the aid of my tapping guide, I've had some bad luck in the past with using the battery drill for tapping and since it's so difficult to find materials at the moment I was happy to take my time to avoid any broken taps/ruined parts.

Whilst I was at it I milled four new feet, which connect the Ball-screws to the profile. Stock is 10mm thick and is set up so I can align the side of the BK15 holder to the top of the profile. These are tapped with M6 thread in four locations for the BK15 to bolt to with 45mm socket head bolts. There are then two 5mm fixing points for fixing to the profile. I may hide some countersink bolts under the BK15's too, for now it's fine.

I went ahead and ordered two ball-nut carriers from a custom CNC bureau service, so I can keep moving on this. They should be here in a week or so I think.