Mission Models sells the Etch-mate and the long bending blades.
I've use mine a lot and LOVE it!
It turns folding etch into a tv tray and sitcom in the background operation, much like cleaning up roadwheels or basic assembly of figures.
Xuron makes an etch cutting scissiors which I won in a club raffle and also love.
With it I have very little cleanup.
I also sometimes use a chisel xacto blade straight up and down, on a 1/4in sheet of glass.
A guy in our club uses the rounded edge blade and 'rocks' it across the attachment point. To each their own.
Either way, make sure you secure the part prior to the dreaded launch.
I fold most things with the etchmate, but also have a pair of flat jawed pliers with square sides, try the jewelry making section of the craft store.
These work well for minor cleanup as well,hold the part with just the stub protruding and file with a fine modelers file. I usually file along the part, not across it.
I've also used a pair of razor blades, one to hold with and one to lift with.
Stamp tweezers , not the kind with the rubberized tips have a flat head as well.
hth,
Mike