If you undo it the screw comes out of the anvil the anvil doesn't raise up with it.
Yep its Aloe Vera we use it quite a lot but you're supposed to be looking at the Hilmor
Yeh in fact this one did, thats it at the bottom with the 25mm former.
Good point about less damage
@westward10 I haven't yet made any marks with my other hilmor which has a brand new vise, but then I don't tighten up past what is necassary.
I was doing an installation recently involving galv, and had a wry smile at some other units doing the same. They had to tell the client they would have to use plastic conduit as they can't get the wires through

,
and instead of bending they used 90 degree bends to screw into, no wonder they could not get the wires through.