Sieg SX2 Plus build

[russell]

O.K. It's two weeks since I started this so it is time for an update.

I've finished scraping in the X and Y slides and improving the gib strips. Both slides work nice and smoothly now without side to side movement.

I've fitted thrust bearings to the leadscrew supports and modified the ends of the leadscrews as shown:



As the leadscrew has an undercut next to the start of the thread I machined the tread away for 1 mm so that there is a good location for the thrust bearing. The thread on the end of the leadscrew was cut off and the remaining end reduced to 1/4 in to suit the flexible couplers. The end of the 8 mm part was threaded 5/16 x 32 for a nut to adjust the preload on the bearings. I'll fit a grub screw to lock the adjustment. Just waiting for an ACME tap to be delivered so I can make the acetal anti-backlash nuts. I had to reduce the width of the bosses on the mounts to 26 mm to get everything to fit.

I've also been drawing up a Z-axis arrangement and find that I can just fit the ballscrew behind the motor if I make a cut out in the plastic motor mount.

Russell.