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

[gavztheouch]

Great got a new set of starrett punches coming in the mail can't wait to try them out. Do you normally drill and tap the mounting holes or use a nut plate/ standard nut and washer from behind. I guess it depends a lot on the thickness of the steel you are mounting too?

[Clive S]

Great got a new set of starrett punches coming in the mail can't wait to try them out. Do you normally drill and tap the mounting holes or use a nut plate/ standard nut and washer from behind. I guess it depends a lot on the thickness of the steel you are mounting too?

It depends on the size of bolt and thickness of plate. My box section is 5mm wall thickness and I just drilled and tapped it. Others have put a plate inside the box section. It would be quite hard to get nuts inside. ..Clive