It depends on whether you want through dovetails or half blind dovetails.zxxer12 said:What is the relationship between material thickness and bit size, same different??
Does material 3/4" thickness require minimum 3/4" long cutting section on the bit??
Does the template determine the bit angle ??
I have a Stotts and his wbsite talks about an 8 Deg. bit but what about 7 or 9 deg.??
Oops! Slight mistake here. That should be a tangent function, not a sine function. That is,h sin(e) = d - p/2
This is pretty much as I understand it too, info gleaned from others...There are some rules, in fact. Smaller angle dovetails are suitable for hardwoods. In softwood, because the tail might pull out of the pin, or because the wood might actually break, you must use the larger angle dovetail bits.
Dittos, but most of us don't have the time or patience or whatever to make James Krenov style dovetails, but can all appreciate how beautiful they are, and serve as inspiration. Myself, I've only ever done one project, a small bookcase, in hand cut dovetails... just to learn and try. Was inspired by one of Krenovs' books enough give it a go. They turned out pretty good for a first time effort... but let's just say, that you couldn't make a living out of doing them at the speed that those went, and they were not as thin. The router lets you cheat the "paying-your-dues" part, but the tradeoff is like you said... a dead giveaway.Generally available bits are carbide tipped, so the angles are usually rather clumsy looking. The carbide cutter is brazed to a steel shank, and the resulting profile is thus a dead giveaway that the joint created is machine made.
Handmade dovetails can be quite thin (given the limits of the wood strength) and elegant.
Think these are what you're talking about:Handmade dovetails can be quite thin (given the limits of the wood strength) and elegant. One company makes very small angle bits out of HSS. Not as strong or durable as Carbide, but the results are beautiful. Go to The Craftsman Gallery, chipsfly.com. The drawer bits (some as small as 6 °) must be used carefully in hardwoods. They break easily.