ski tuning vice with bolts and nuts

I disassembled the parts from Mitchr thing.
I kept the body (with slight simplification) and the mobile arm.

I designed 2 bolts :
A 130 mm bolt for the mobile arm.
A 45 mm bolt for the body fixation on the table.

I designed 1 nut which has to be printed twice. 1 comes in the arm and is attached to the 130 mm bolt. 1 comes in the body and is attached to the 45 mm bolt.

I designed the "pressnut" which is intended to be screwed to the end of the 45 mm bolt (in ordre to press the tool to