u/ConsiderationFit5752

I found a jigsaw in the garrge and a metal cuting blade.I drilled out the center so the Jigsaw could fit his blade in then cut diaginals from the center.I pulled the 4 flaps and bent them back on themself on the inside of pannel .Tested the fit .This created a rolled edge against the cooler with no sharp edges ect .I got a cheap set of aviation metal snips an cut away the exsess flap on the inside .I will take a sanding block to it one day .Thanks for everyones input and Ideas 💡