hmm, transformers...mebbe someone can rig this thing with a spring assist opening.
Kinda like Sulu's expand-o sword from the latest Star Trek.
But for 90 smackers? Face-palm.
E-tools work, not quite as well perhaps as fixed shovels, because as pointed out, they're not subjected to serious and repeated impact stresses on hinges. I did have a commercial E-tool collapse at the nut - silly nut was plastic, not steel and was dented by the blade, which if it was not tightened to the point of denting the nut, would flop about (sigh). Replaced it with a surplus E-tool when I got the chance to live in the trunk.