Official Luthiers Forum!

Some time ago saw a post about a jig to cut bindings (or purflings) with no waste, by Dave Stewart. Original post here in tutorials http://www.luthiersforum.com/forum/viewtopic.php?f=10117&t=19132 but some people here may not have seen it.
Anyway, I wanted to cut down purfling for a build from 2.7 to ~1.9mm
I've tried before with a fine bandsaw blade and zero clearance plate with mediocre results
So here's my quick and dirty version, works perfectly.
The maple spacer behind the rosewood securing the blade holds the purfling flat, and the rosewood strip with one screw holds the purfing against the back post like a featherboard.
Shallow cut to start, flip the purfling over end to end keeping the cuts aligned on each side, cut again, tap the blade down, repeat a couple of times and you're there.
Thanks Dave!

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

That is a nice simple jig, thank you for showing it!

Nice one Colin. Thanks for sharing!

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Steve Smith
"Music is what feelings sound like"

Original jig was good, your changes make it great. Thanks, making one today because I need one shortly

Ed

I'm cogitating how a person could do the Tim Taylor version by adding an oscillating tool to it (More Power!).

Why not go the whole hog and go for a chainsaw.

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

"Why not go the whole hog and go for a chainsaw. "

Now That would be Tim Taylor!

Nice!

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It's not what you don't know that hurts you, it's what you do know that's wrong.

Thanks Colin. Could you expound a little? It looks and reads like the maple piece holds down the purfling (which could work for any width up to wide sheets) and I think, unlike Dave’s jig (where the strip is pulled through) runs along the surface making the cut. And the “feather board” sets the width of the cut. But does does the maple piece index on the feather board? - does it touch?

Both jigs work in the same way.
In mine as it says,
"The maple spacer behind the rosewood securing the blade holds the purfling flat, and the rosewood strip with one screw holds the purfing against the back post like a featherboard."
The width of cut is pre-set by the width of the maple spacer + half the width of the blade (it's a double edged bevel)
I'm splitting one piece of purling into 2.
Daves' is cutting binding.
If you are cutting wider stacks/pieces, I would suggest sourcing a single bevel heavy duty blade, perhaps like the
excel BEVEL BLADE #19B with the bevel towards the inside, so it holds the workpiece into the jig.
Or you could use a marking knife maybe.

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

Sorry Colin, I think I get it after zooming and waking up. For a wide piece of veneer you would just clamp it flat and index your blade, with spacer width your final purfling thickness. In that case it seems the “feather board “ wouldn’t be necessary?

Thx again for posting help.

Of course, if you are cutting wider sheets/stacks that would just be an obstruction., which is why I suggest a single beveled to pull it into the jig.
If you start with a straight edge you should be able to feed/pull it though with care and cut strips off, just hold the jig thing in a vice or clamp it to something.

_________________
The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.

Very nice!
Is the BWB purfling shown been cut already? Looks like it can take a tiny tiny cut.

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Measure Twice,

Karl Borum

If you're asking me, it's dated Fri Jul 26, 2019

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The name catgut is confusing. There are two explanations for the mix up.

Catgut is an abbreviation of the word cattle gut. Gut strings are made from sheep or goat intestines, in the past even from horse, mule or donkey intestines.

Otherwise it could be from the word kitgut or kitstring. Kit meant fiddle, not kitten.