Reply To: Half blind dovetail advice
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Hi Tom,
Just a few thoughts based on that I’ve not always been succesful using a combination square.
If the bottoms of the pin recesses are square to the faces of the drawer sides and the bottoms of the tail recesses are of constant depth (para-planar to the drawer front), then – as both gap lines are of equal width – there should be a close fit.
With all due apologies, could it be that the width of the rebate on the inside of the tail piece is one mm less than the depth of the cut line?
Another of my culprits behind this situation has been failure at completely clean out the corners between the ends and bottoms of the pin recesses. Checking with my ordinary sliding square didn’t quite reveal the problem, but a wheel gauge set to the depth would grab as it caught non flat parts of the recesses.
Finally, and this is really silly: if the sides aren’t square to the front, then there will be a gap.