How can I tell the angle on a dovetail bit? I have a standard protractor, but it is pretty much useless with as small as the bit is? Reason I ask is I have about 6 but don’t know the angles so I am not sure which to use in my Leigh jig.
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Replies
You could rout out dovetail slot in a piece of wood, then use a bevel gauge to determine the angle. If you don't have a gauge (and angle scale), try making a few cuts on you table saw at 8, 10, 12 and 14 degrees to see if you can match the bit.
With the Leigh jig, I find it is rather intolerant of bits that are slightly off the specs they have. I've gone to ordering all my bits from Leigh -- and getting the 8mm shanks, it's a great improvement.
Jig it up and rout a dovetail. Draw an extended line of the angle and use your protractor. You may have to subtract from 90 depending on your protractor.
BTW, I also use 8mm bits from Leigh. Much better results. But you do need an adapter for going from 1/4 inch to 8 mm. Leigh sells these too.
Edited 10/24/2005 9:28 pm by 81treehouse
Very good suggestions. Make sense and I will try the 8mm bits. Just ordered a couple of upgrades for my Leigh. Had the older stops and guage. Old stops are a pain, hopefully the new ones will make it easier.
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