Hey all, I may be selling my machine and building a bigger and better one,

one thought though, after using the chinese BK / BF blocks is that they're crap and the mounting holes are worse.

what does a BK block comprise of?

is it just and alu block, with a bearing pressed in and then a four screw cover to clamp it down?

has anyone made one before? if so was it difficult? As I can chuck it on my current CNC and make some parts for it :)

also, do I want an angular contact bearing or a double row bearing?

Thanks!