The Stovebolt Site Forums The Shop Area The Tool Chest Ridged Foam Cutting, the easy way

I think the key to the success of your modified putty knife is the curve in the cutting edge which provides for a better slicing action compared to a strait blade. Also the large handle and the overall shape of the putty knife allows you to manipulate it until you reach the sweet spot angle for efficient cutting. And don't fret not getting credit for not getting credit for inventing it. My father-in-law came up with the idea for the cardboard grease gun refill tube as a child, submitted his idea to a magazine that was asking for tips and new ideas. Low and behold, a short time later there was cardboard grease tubes everywhere. I invented the two wheeled wheelbarrow on the floor of a hardware store many years ago. Still waiting for the royalty checks that ain't coming.