A Drop-In Bench Vise Jaw Jack

[madokie]

pass ,,,too complicated and parts to loose,, how about a dozen 5/8 flat washers stacked on top of each other and loosely riveted or bolted together, at the far edge away from the center hole.. u just put how ever many washers u need to hold the gap open and u can run a thick wire or rod through center hole on top of vise jaws to keep washers in place while u hold other part and tighten vise..