What is the best way to mark out for bearing blocks and linear rails?

[Wal]

Just a word of warning - double check and measure off the print before you punch... I eventually had my plates drilled at a shop but used a 1:1 print out to check the work against. Fair enough - the prints had been kicking about in the damp-ish boot of my car, but that was enough to warp/stretch the paper and introduce some alarming deviations - I thought the machine shop had ruined my plates before I realised what had happened... In theory and as Clive says, the method should work perfectly, just don't take it for granted that the paper's going to remain stable over time. Oh, and don't forget to tape it down..!

+1 on Mike's suggestion of using the rail as a jig and using a transfer punch through the existing mounting holes.

I used M6 threads into 60x60x5 square section to hold my plates.



A fair few of 'em, but I found no need to use backing - as Clive says, it would have been hugely impractical to do so...

Wal.