YEs but its so easy with thses quick rigs, take 3 mins to make one. I have tried screw drivers and levers and there a pain in the arse specially when you need a 2nd free hand to locate clips etc. also had a slip spring and trap my fingers and had to wait 20 mins to find a neighbour to reload. not fun.
Reckon your mental if you dont use one easy as piss to make and use. I just have 2 bits of RHS with a bolt in it, and a plate welded on the end to catch the spring, was to lasy to finish it so shove the other end in the vice.
Still works one handed and EFFORTLESLY..... its the best tool in the shed. seem to use it all the time
this was how it was supposed to look, but i got lasy as i was in a rush and needed one urgent job and its just 2 bits of RHS square with a bolt but i will revist this someday and follow th eplan....