these burned signs were interesting lucky my customer just brought me the blanks already burned. but they are not square or flat so I made a rectangle jig and used shims to make sure it did not move and did not rock. I used a 5/32 downcut bit to cut it and had to guess on depth too it is a two sided sign. I had them use the fix rot epoxy to soak in and lock all the charcoal in place. the last one is just black sintra I thought looked cool.