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Reply by JBrow

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Posted on angled lamination question

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JBrow

1368 posts in 1797 days


#1 posted 04-26-2017 02:41 AM

luthierwnc,

I thought I understood your joinery/glue-up question but may be confused by your follow-up post. Anyway, I can think of two ways that could be considered for gluing and assembling this joint to yield a bookshelf speaker stands supported by an angled post.

The first would be to glue up and true the post, base, and top. Beyond that, the pieces could be cut to the desired angle. Then, with a finger jointing jig whose fence is angled so that ends of the workpieces set flush on the table saw, the fingers and finger pockets could be cut as you cut finger joints at 90 degrees. If the glue-ups are initially long, the cut-off pieces could be used to dial-in the finger spacing.

The other method would be to cut the individual pieces to the proper length and with the ends cut at the proper miter. Then, the base could be glued-up using off-cuts from the post as spacers to set the fingers in the correct position. To prevent the off-cuts being glued in place, the off-cuts would be removed once the base glue-up is in the clamps. After the base is out of the clamps it can be flushed up. The top would be glued in the same manner.

The post would be similarly glued, but the base and the top would be the spacers to set the post planks in in position. Once the post glue-up is in the clamps, the base and top are removed to prevent the base and top from being glued in place. Once the post is flushed up, all the finger joints could be glued.

This method would require some special cauls to ensure 90 degree clamping force and to ensure the ends of the assemblies line up. It also requires that all the material is milled identically. This method would likely leave the fingers of the base, post, and top proud of the surfaces by the amount of material removed when each glue-up was flushed up. The proud end-grain of the fingers can be sanded flush.

Of the two methods, the first method would be easier for me to execute. Unless you like the look of the finger joint, splined mitre joints would be faster and easier than either method I suggest.


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