uxcell 4mm Paper Punch Drill, Straight Shank Hollow Bit Tool, for Hole Puncher Punching Machine

Used for METAR Map Project Based on a recommendation found in Amazon reviews, I gave this a try, it made absolutely perfect clean holes in a Map that had been adhered to Foam Board with Modge Podge and allowed to dry overnight. If other hole punches cannot reach deep enough into your project, this resolves that issue. Size depends entirely on you needs. It is not intended to be placed in a drill, but it has worked fine for me. The larger end goes in the drill, the narrow end is the sharp cutting side. It is hollow so most if not all of your scrap will collect in the hollow center and can be easily removed by pushing an object thru the shank. Place some type of sacrificial foam board or cardboard behind your project to protect the work surface as well not allow the cutter to dull on a hard surface.

Nice

Worked like a charm in my drill press to make a clean 6mm hole in 1/2" high density foam for my custom made Fluamce subwoofer isolation feet.

With the straight sides I’ve chucked this in my drill press and it works great for those times you want to have a hole in a pad or book. Works great for those occasional times you want a hole in something too thick for a punch.

I used this in my drill to cut about a hundred holes in matboard for a METAR map project. Razor sharp (be careful) and works beautifully.