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figure 8 fasteners

ken_chase58's picture

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In the current issue an article on building a corner table
mentions the use of figure 8 fastenes to attach the top
and allowing for wood movement. How do they work? Where can I
purchase them?

Seth_Frankel_'s picture

(post #83227, reply #1 of 5)

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Ken,

A figure 8 fastner is basically a siamese twin washer - two washers joined at their sides. You can screw down into the rail and up into the top by positioning them so that one of the rings hangs off the rail.

The upper-right photo on page 54 shows them in all their glory.

As for sources, I'd have to hunt a round a bit but I'll let you know if I come across any, but I'm sure someone will post a source before I find one.

Shop made solutions are easy as well. I generally make a slot mortise in the rails and make blocks that have a little wing that fits in the slot and screw the block to the top.

A napkin sketch of this technique is below.

Best,
Seth

John_O'Connell's picture

(post #83227, reply #2 of 5)

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Rockler I think has them.

ken_chase58's picture

(post #83227, reply #3 of 5)

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John: Thanks much. I have always made my own wood connectors
as yourself but my current project would be better served
with the figure eights. However, I still don't see how they
allow wood movement. Unless they pivot or somehow expand, how
do they fulfill their promise
ken

Robert_Phillips's picture

(post #83227, reply #4 of 5)

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woodcraft.com or your local store - they carry them

Robert

Seth_Frankel_'s picture

(post #83227, reply #5 of 5)

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Ken,

The swivel on the screws. If you have them at a slight angle then expansion will just move them as needed.

Best,
Seth