Easy to use, works great

This is great for sharpening the inner edges of my hole punches but mine all have rounded tapered outer edges and unfortunately these punches only work on the outer edges of straight-taper outer edges.
Luckily for my all I really need are the inner edges sharpened.
This is a great tool, one of those "I neve knew I needed this until I saw it" items!

I did not get the original shipment, and there was some delay in getting the product. Once they finally responded, the shipment was quick, and the agent was very helpful and responsive. The sharpener looks exactly as described and should function well. Despite the delay, I think it's a 5 star product and company

I put the Jupiter Punch Sharpener to the test the moment it arrived, and I have to say I was genuinely impressed.
I mounted a set of inexpensive punches I had purchased from Amazon in my drill press and used the Jupiter Sharpener to reshape the cutting edges. Since the quality of the steel on these punches was questionable, I wasn't expecting miracles. To my surprise, the Jupiter not only restored the shape of the punches but left them incredibly sharp. After a quick final honing, they were cutting through leather like butter. This answered a question I'd always had: Can you turn a cheap leather punch into a truly useful tool? The answer is yes—with the Jupiter Punch Sharpener.

For anyone who works with leather and wants to get the most out of their punches, I can confidently say this sharpener is well worth the investment.

Outstanding product—great job!

I love this. It makes my punches sharp quickly.