Sharpen Hole Punches Even Chinese w Dr Joe

[@JosephHunstad]

It is an easy fix with a demagnetizer. Look for one on eBay or Amazon they are relatively inexpensive they allow you to both magnetize and demagnetize instruments.

[@GM-gc8gg]

Use a Sharpie to color the bevel. Then you can see exactly where you're honing (and not honing).

[@JosephHunstad]

Yes I fully agree. Thank you. JPH

[@susantipsyhealy7655]

I guess I missed the name product you are spraying on. lol. I took a quick screenshot and zoomed in on it.

[@JosephHunstad]

Because I’m using Diamond Files, I’m using a diamond lubricant. That is made by trend and you can buy a small bottle online. It works great with any diamond abrasive. Consider subscribing. Thanks Joe.

[@drcoolit]

these "arch" punches seem to have a drawback in that as you sharpen the cutting edge, it decreases the total length of the tool and with that bell / cone type cup wouldn't that cause the diameter of the cutter to increase? So if you had originally a 3/4" punch, over a period of time as you kept grinding away the cone, it would become wider than 3/4". Just curious if you have a way to maintain the sharpness WITHOUT removing more metal. With knives, you can greatly improve the life of the knife by stropping so "hard resharpening" (stone, etc.) becomes very infrequent. I guess a related question would be -- what do you think the useful life of this tool is? I know there are some brands (C.S. Osborne is one) that have a reputation for high quality, but the fundamental problem remains because it's the design that's the issue, and the quality of the tool only means how much longer a good tool will keep its edge vs one that won't, resulting in wearing away metal faster for that lower quality tool every time it's resharpened.

[@JosephHunstad]

Sorry it took me so long to answer this and I will say These questions are great. I just posted a video showing the inside diameter of both of these punches With the general punch there’s about it four or 5 mm consistent diameter inside the punch so we can tolerate many sharpening’s. The useful life of a tool like this is dependent on what you’re using it for and how frequently. In general for using this for rubber leather hard cardboard things like that and when we punch these against a nice forgiving surface such as plywood or other things I think you can have a considerable lifespan thank you for your comment

[@drcoolit]

@@JosephHunstad thanks for the update and info. I recently got an Osborne punch and noticed that it had some rust spots because a few days earlier I had inadvertently gotten some drops of water on the tool and hadn't noticed that. This is apparently a high carbon steel that reminds me of some Japanese knives that can also easily rust but are very good at holding an edge.

[@Cianan-vw1lb]

Thanks! I have to sharpen a foam cutter.

[@JosephHunstad]

Hey buddy, this method works like a dream. I hope it was helpful for you. Consider subscribing. Thanks. Joe.