PCB vise 180 flip

I needed a vise, so I design one, hope that be useful to you as well.

You will need:

M6 threaded rod (you choose length)
10mm aluminium pipe (+/- the same length)
M6 rounded union (10mm diameter )
1 M4 bolt and nut
some base ...
3 screws for fixing the base and small one for the knob.

Only for reference my base has : 250x120x20mm

Tip: with some eat in the treads it's easier to put them in.
you must use some super glue in the M6 union and in the knob