Afternoon all, I'm trying to put together an aluminium shower enclosure frame, and rapidly loosing the will to live!
The frame is extruded Ali section held together by going into tapped split tubes but I've managed to snap 2 screws off so far and cannot find a screwdriver that fits the posidrive well, I've got hundreds of driver bits and screwdrivers and not one fits properly! Even tried substitution for my own self tappers but just all jams up before its snug,is it just galling up or?
I suspect they are stainless self tappers
The frame is extruded Ali section held together by going into tapped split tubes but I've managed to snap 2 screws off so far and cannot find a screwdriver that fits the posidrive well, I've got hundreds of driver bits and screwdrivers and not one fits properly! Even tried substitution for my own self tappers but just all jams up before its snug,is it just galling up or?

I suspect they are stainless self tappers