Gave the first new bandsaw blade a quick workout today – the 1/2″ 3TPI bimetal blade.
It has a regular tooth set, and slices beautifully. When resawing, it vastly out-performed my current 1″ carbon resaw blade – it is obviously significantly sharper – not surprising given how easily carbon blades dull off.
So not only it is superbly sharp, because it is bimetal it will hold that edge for longer. I guess I have found my new “standard” blade – the one that will stay on the bandsaw by default, so whenever I want to do a quick cut without going to the trouble of changing blades, this is the one that is a jack of all trades. So yes, very happy with this first blade, and looking forward to testing the others.
The general rule is to have as few teeth in the cut as possible. Too many, and the gullets fill and clog and the blade cannot cut well. Too few teeth, and the cut is rougher than is necessary. Having a range of blades, sizes, tooth configurations, tooth numbers will mean you will have the best blade for the job.
Deep gullet and 10o undercut face which digs in more, and tends to curl the shavings. Good for harder woods. I would imagine though, that it is likely to dull off quicker, given there is less material backing the tooth edge up.
Similar to Hook Tooth, but has the teeth at 90o . Chips rather than shaves – good for materials that would otherwise clog up the blade. Effectively increases the gullet (which clears the formed chips out of the cut), without having to increase the overall tooth size.