How Would You Upgrade An Old Ox CNC Build Into A Serious Machine?

[Boyan Silyavski]

Was looking at some HGR20-1000’s in the BST automation store for my side rails... but for the life of me I can’t figure out the differences between the different carriage options.

I’m also wondering if adding a better cross piece between the gantry uprights is going to reduce twisting and for mounting the linear rails. I’m definitely going to ditch the C-Beam linear actuator because although it stiffened up the Z axis compared to the original one, it’s currently pushing the spindle too far from the gantry for my liking and is wasting X axis travel (my gantry is the Y axis... yeah, I know... I’m weird lol).

I said it in other thread : I buy from these guys https://es.aliexpress.com/store/822038 12 and 15 size. Have not bought from them 20 size , but their rails are very good quality and price. Custom size also, contact them. make sure to buy the long carriages.

BST is good for original HIWIN but last time i checked / 2 years ago/ the Chinese rails they were selling were not very good. While the ones from the link above are top notch

Dont rush discarding the C beam. Take a look at my design for a DTG printer base using that C beam and said linear rails+some 3d printed elements:



This is 12 size Hiwin square, which would happily move 0.8kw spindle. I would say even 2kw spindle if 3 blocks.

But this is not my point. Maybe 15 size and use the C beam like a L shaped gantry. I have never tried it but that's the fun of it, you can figure it out for yourself.