Some of you may have seen my other post. I currently repurpose used hs footballs. I mostly dable in small goods, wallets, key chains, etc. I am looking to make a messenger bag. As I deconstruct the football and have all the panels, I am wanting to use as much of the panel as possible. To do so I need the panels flattened out. Any suggestions for doing this? As you can imagine they've developed quite a 'warp' or 'curve' to them. Appreciate all input.