vectorising is basically going into Coreldraw / Illustrator and drawing in all the lines, curves, and designating the lines a thickness and the fill in between certain encased lines / shapes with a colour. Then when you have these shapes you can layer them to replicate the finished work of art / design which in this case is your playfield design.
That's OK for a print file but not for a cutting file. You can designate a line width but when it comes to cutting all you get is a hairline in the centre. For a cutting file you have to hand draw both sides of the line
