That is one of the things that I do own but don't use. I purchased one that was 5-6 in wide and jury rigged it to be no more than 2 inches wide. It takes a good deal of pressure to work well. But I found that the punch surfaces picked up wax very quickly and were very difficult to clear out.
But that may be my problem. I warm all frames to 95-100F before uncapping and extraction. Now I just use a scratcher as I hate the fumes from a burning hot knife. Takes a more time but still does a good job.
Fuzzy