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steven c newman
04-02-2014, 5:17 PM
Cutting a few of these miter dovetails. Seems there is a spot in every corner I just can't seem to get to. I do have an old "beater" 5/16" chisel, wonder if I could re-grind the sides to a knife edge? Also, would i need a skew type tip on it, or make two? Maybe these might fit a bit better286291286292Still needs some fine tuning at the bevel areas. The third one of these does look a bit better. As in...the third mitered dovetail I have ever tried to do.:eek: Wood is Black Walnut. All the scrap i had that was close to the same size.

Be nicer if I could clean out them corners, though.

Jim Matthews
04-02-2014, 6:41 PM
In the back, at the bottom?

I use a little undercutting there.
It's the sides of the pins and tails that have mechanical strength
and glue surface. If you've got debris in the back,
you can chamfer the mating tail some, too.

If you're talking about the long miter, a shooting board makes that more reliable
than sawing. That way you can "sneak up" on the proper fit.

When I saw, I leave it a little proud and plane to the final dimensions.
Plane - test - plane again, until it fits.

The Big Dogs might get this right in one pass, but I respect my limitations on a tricky joint like this.

steven c newman
04-03-2014, 2:47 PM
Ground down the sides of an old beater chisel, until the prfile looked like a triangle. Wound up with a bit of a skew to the edge, too. Just an old wood handled China type that you see at Harbour Freight. Chisel WAS 1/4'' or so wide. Still have a second one of these old beaters @ 5/16' or so wide. Might turn it into the opposite skew.

tried the "New& Improved" chisel on the inside corners of those mitered Dovetails. Clear back in the back corners. Could clean out by going straight down, and coming in from the outside. Cleaned a bunch of waste out. Corner now is a clean and sharp corner. The joints even fit better now!. Was able to get the mitered areas to meet each other.

Long miter, either on the sides, or across the edge of the joint was done with just a sharp 3/4" wide chisel. Saw the waste away, leaving the lines. Chisel to the line. Seems to help if I cuss a lot while doing these things, too......

Wood being used is Black Walnut. Happened to have a few off-cuts sitting around after the Tool Chest build. The tool chest also made a nice seat. I could clamp the work to the bench top, sit down on the chest, and saw away. Better viewing angle? It was easier on this old back, though...

steven c newman
04-03-2014, 3:31 PM
Ok, ok, pics or it didn't happen, right? 286354Like the "Miter Joint"? Another look at the miter286356However, there is more than meets the eye going on here286357That groove was done with old G. Roseboom's 1/4" Plough plane. Oh, the dovetails?286358Yep, that "New & Improved" chisel can get back into them corners, and clean them out. Not too bad for the first three joints i've ever done this way, this being joint "C". Just old cut-offs of scrap to practize on. Might make this a box of some sort. Still needs a bit of fine tuning...