Having been through the process once (was enough!) with a straight-edge and a craft knife (mind your fingers) I think it impressed on me that it meant, in total, 4 x 78 actions! An additional disincentive was the fact that I got though about 95% of the process and the knife slipped - cutting a "chunk" out of... one of the cards. <phew> But these days, disgression is the better part of valour. But I sense it is a
good idea in principal!
I think I'd like some more... "automated" way of doing things. (And one that produced a more uniform size!) At my workplace, we once had a card/paper cutter, which had a wheel which moved along a bar to make the cut. It was capable of quite remarkable accuracy - A bit like a Pizza cutter - but safer than a (finger) guillotine!
Hmmmm I am still tempted to buy a replacement for that deck I "butchered" slightly
Macavity