120 minutes
After smashing several Sharpie tips, I created a pen holder that eliminated the need to have a perfectly flat waste board. The pen holder is made from 4 inch length of 1/2 inch diameter pipe, a cap end, a 1/2 inch diameter coupler, a 1/2 inch to 3/8 inch nipple and a light spring. These can be purchased at Home Depot. File the inside of the nipple until the Sharpie can slide in and out of the holder.
John McWhirter