From a basic hot rodder - and my first tech post. I need some hood clearance for a project and the most expedient solution was...blisters! Hammerforming into a block of wood is about as tricky as I get, so I thought I'd give it a go. First off was to determine the size I needed then make a cardboard template and buck of the shape. Once I found a suitable sized hunk of wood, I used the template to transfer the shape. Start digging! As I chiseled away I used the buck to check on depth and form progress. With the hammerform shaped, I cut out a piece of MDF the same shape as the blister to clamp some sheetmetal to the hammerform. With everything securely clamped I started banging away with a drift to define the edge and followed that with a peening hammer to get the basic shape and depth. With the bilster roughed in I went back to various drifts to tune the shape. Once freed from the form, ta-da, a really rough blister, complete with woodgrain. Some simple dolly work and a bit of filing and there it is, one blister! Hope this helps some fellow HAMBers, but as the saying goes, If I can, anyone can.