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I have a Veritas 14 TPI dovetail saw. What would be the benefit of the 20 TPI version? I'm thinking ahead on my list; the local Woodcraft is having a sale next weekend with 10% off power tools, 15 % off store-wide, with an extra 5% of before 10AM. Thanks
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Location: Sierra Mtns North Calif
I have both the 14 and the 20 TPI Veritas dovetail saws. I use the 20 TPI when cutting dovetails in thin drawer sides (3/8" or so). I use the 14 TPI for thicker wood. However I can't say that I see much, if any, difference between using the one or the other.
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A few other factors are involved, but in a nut shell the larger teeth will want to take a bigger bite causing more chatter in the thinner woods. Obviously this makes it more difficult to get a smooth cut. Like trying to use a chain saw to cut thin branches.
Over simplified, but you get the idea.
BontzSawWorks.net
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For me, thickness doesn't matter its 14 in hardwoods, 20 in soft.
Thin boards you just clamp closer to top & no chatter.
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Location: The GA Lowcountry
My dovetail saw is a Zona razor saw @24tpi. It does the job great on drawers and smaller boxes. I would want something bigger to do a blanket chest.
Ducking...that is why I have a router and DT jig....
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When something has to be done, no one knows how to do it. When they "pay" you to do it, they become "experts".