Hi Craig & Roger ... Hope things are well where you are ...

@Craig: It would be helpful if you could find a reference to the Chinese company. Although I am a bit wary of using Chinese companies (it seems that they are often quite harsh on their employees and the environment) it would be very useful to know what to search for. So, if it is not too much of a hassle I'd appreciate this info ... BTW - can I ask you what you are making since you need so thick PCBs?

@Roger: Hmmm, yes, the TIR .. As it is I reckon that my machine may be acceptable in this respect. However, the spindle motor is a Kress 6990E and I think that the basic construction should be fine. Also some time ago I found this ebay vendor offering to "align" any spindle down to 1um:

https://www.ebay.de/itm/Hf-Spindel-F...p2047675.l2557 ... (Note that the text is in German but I reckon google translate could help)

Conveniently he & also Rego-Fix are within Europe so maybe I can relatively easily update my spindle's precision.

Cheers,

Jesper