Years ago I rented a tool for scoring wallpaper, to assist when stripping it.
It was a T shaped tool with a handle about 40cm long and 2 (not quote coaxial) spiked rollers, each about 10cm long, and so positioned as to tear the paper. It worked very well, and in fact so well that I am inclined to buy one.
Problem is I have no idea what it's called, and as such cannot find one in any online shop!
Any ideas what they're called?
david