I recently picked up a 1" oblong hole punch by craftool. The first time I tried it things went poorly, I hammered that thing forever and all I ended up with was an imprint of the tool on my leather. I've seen videos of people using the exact same tool and it seemed to cut through leather like butter. I used it on my strop thinking it would make life easier but I ended up with the same results. Should I try using a grinder to sharpen it up or keep on with the strop? I just don't want to ruin it cause it wasn't exactly cheap.
I've used craftool strap end punches, round hole punches, and pricking irons in the past, they all worked fine, the strap end punch I used on a strop and it worked perfectly afterwards.
Any help for a newbie would be much appreciated.