Build and Intro

**JAZZCNC** · 21-10-2013

Originally Posted by swisscheese

The table is bolted to the ground in 8 spot(one each leg) so I'm guessing this might mean I don't need triangulation?? Will wait and see. The epoxy leveling was done after. This means that I can never move the machine(as it would have twisted when I bolted it down), at least without redoing the epoxy each time.

If you had triangulated and made a stiff frame then yes you could have moved the machine. Even now you can move the machine but you will need to ensure the frame is not in twist when set in new location. The rails will still be on the same plane if no twist exists has they levelled on same plane and the only thing you can introduce is twist.

Regards the rails on front then mostly depends on how much extension you have on the front plate when cutting and also what your cutting. If mostly extended and cutting harder materials, hard woods,aluminium etc then it will make enough of difference to matter. Low extension and softer materials it will hardly make difference.

**swisscheese** · 23-10-2013

Thanks for the replies

Few Questions

How tight should the belt be? As in should I be able to turn the pulley on one side a little bit(maybe 8th of a turn) while holding the pulley on the other side still? It runs between the two sides and has a center distance of about 1100mm.

Also with the pulleys the length of the bore is about 29mm and it has two set screws. The shaft for the pulley on the end of the ball screw is only 15mm long. Should I be concerned that the shaft isn't long enough? Is tightening down the set screws onto the round shaft fine or should I grind down two flat areas on the shaft for the set screw to tighten onto?

thanksssss