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Pic of Linda Manzer doing kerfing and using the paper clip method. Just fyi.

I cannot believe that I've forgotten all about this!!!
Thank you Dave for kickstarting my brain, I've seen this before (thinking that this is a pretty cool idea) and I apparently managed to completely erase it from my memory. This is the one I've seen (also a Manzer):

and not a clothespin in sight!

we all find out kerfin clampin zen spot. be one with the kerf .
May the Kerf be with you

Swell --- but there is really a math and science issue to consider when clamping, which is overlooked using such a wide "clamp" -- the pressure is ONLY applied to the outside edges of the clips which in fact can lift the kerfing in the center. The more narrow the clamp foot print the better, since the force is more likely to be concentrated on the "CURVES" -- so happens the little old clothes pin is very narrow -- many can be used applying the force to the apex not the the ends of the cord section. Little more than .$02 since I did not make up the rules of geometry.

Take note of the different width clamps that are used depending on the radius of the curves:

http://www.taylorguitars.com/video/fact ... nd+Kerfing

kencierp wrote:the pressure is ONLY applied to the outside edges of the clips which in fact can lift the kerfing in the center. The more narrow the clamp foot print the better, since the force is more likely to be concentrated on the "CURVES" -- so happens the little old clothes pin is very narrow -- many can be used applying the force to the apex not the the ends of the cord section.

Not sure what you mean... If by "outside edges" you mean the point where the spreading wires contact the clamp, how is the pressure affected by the width of the clip? The pressure per unit of edge length would be the same no matter what the length/width of the clip, no?
Or did you mean depth of the clip, so that it would be possible for the "top" of the kerfing (parallel to side edge) to lift off the side?

I was thinking the same thing Ken Cierp wrote.
Muddyfox,
Ken is referring to the points of contact of the clips to the kerfing strips. Since the clips are wide, they will tend not to touch the kerfing in the center of the clip, and make good contact at the ends of the clip width wise on against the kerfing. Think about it like this:
If you try to clamp a flat board using a curved caul, the caul will wither touch in the center of the flat board, or at the ends, depending upon the orientation of the caul. i.e. if you put the caul curved side down against the flat board, only the ends of the curved caul will touch the flat board, or if you put the caul with the curved side against the flat board, it will only touch the flat board in the center. Wither way, you do not end up with even clamping pressure across your glue joint.
I like my clothes pins with rubber bands. They have served me well. Of course, if I had a bazillion dollars, I would get those Kevin Ryan Special Kerfing Clips and a boat load of his A4 Kerfing. But I dont, so I use clothes pins. They are cheap, just like my radius clamping cauls made from index cards, and cheap like me.
Although I might not even do that if I did have a bazillion dollars. Having tons of money does not mean you should waste it.

No need make it any more complicated --draw a straight cord line on a curve -- any curve -- where does it touch? Look at the TFFV above, the tighter the curve the more narrow the clamp.

What Ken said. Man I need to work on my 'splainin skills.