In case anyone has not seen or thought about this technique for metal patterns: 1. We often need templates to cut metal especially fuselage side panels to round side curvatures. 2.Most of the time we use paper templates (tend to shrink); thicker metal (awkward to use easily and may require two people to get right and expensive) or..... 3. Go to Lowes or Home despot and find a sheet of blue (generally) 1/4 inch or 1/2 inch foam packing sheet. a. Its light b, Does not shrink with age c. can be handled by a single individual d. conforms to most any shape..... e. have a complex shape, use thinner packing sheets.