How Do You Make Perfectly Round Corners?

[FlHobbyist]

As promised here is a picture of some corners I cut with the Chinese punch. It was sharper than I thought it would be, albeit the leather is pretty thin. I rubbed the punch in paraffin just to make it go smoother.

[KandB]

FIHobbyist thanks for sharing - I'm buying a set now!

[strudell]

KandB did you get the punches and have an equally positive experience with them? What was the shipping time to CA?

I'm considering grabbing the set myself.

Shane

[Palermo]

Use geometry.. Straight lines make a perfect circle. This is my method

Straight cuts

Edited February 5, 2014 by Palermo

[FlHobbyist]

Use geometry.. Straight lines make a perfect circle. This is my method

Straight cuts

Wouldn't one need an infinite number of straight lines to form a perfect circle? I understand how to make a circle with a compass, though I don't know how to make one from geometry alone, other than making a polygon with an infinite number of sides. Edited February 5, 2014 by FlHobbyist

[FlHobbyist]

To update this thread;

Tandy now sells a corner cutter. Seems to me the price was around 30 or 40, but it is progress.

I continue to be very happy with the cheap set of corner cutters I got from China. However, one needs to be lucky when ordering stuff like this from China, as I also ordered a set of belt end cutters from china that were quite dull when delivered. Someday, I'll have to figure out how to sharpen them.

[Palermo]

I started by using a penny dime or quarter as a guide and just cut straight lines around it for the outside corners. Doesn't take that many. For larger corners on my attaché cases I use PVC pipe as a guide

For inside corners I use a hole punch at corners and straight lines to "connect the dots" so to speak.

[BDAZ]

Tandy has a new corner punch in their February flyer for $29. I just bought one as a time saver.

Cya!

Bob