I make all my own crank scraper from sheet metal, steel or aluminum. I'll use a piece of stiff carb board, like most after market gaskets come in and a oil pan gasket to get all the oil pan holes located properly and then measure and cut away
Once I get it where I like it I'll transfer it onto the sheet metal and finish the trimming it one crank journal at a time with it bolted downon all the oil pan holes
I shoot for between .030 and .060 radial clearances, depending on if the motor has steel or aluminum rods
I do like the way they bent the one side up on all the rods and put a drain back hole in it