Another good idea! I was thinking I would sew it but that's a complete waste of time. I'll glue it! Thanks, buddy!I use clear Gorilla glue to attach chamois to my reproduction oxygen mask tabs on my P-series 1950's flight helmets. It is a jell and does not bleed through. Very strong hold. I would glue it on and trim it with a sharp eXacto knife. Slip something between the aluminum and leather to protect it when you cut it.