Mark when l first started making slime pens l used this vice on the flat base it worked fine on the smaller blanks.But then l moved into the bigger kits and thought how the hell am l going too hold these larger blanks, then it just hit me in the head like a ton of bricks duh!! all l have to do is flip over the base plate and bolt the vice too it
problem fixed holds any size blanks.
ps now this is called the Crane Vice!!