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190 Posts
Discussion Starter · #1 ·
Just found a pretty good little article, thought I'd share.


Placing a cap over your rail posts not only looks good but also protects the vulnerable end grain of the post from the weather. Caps for 6x6s usually must be special-ordered, but you can make your own from 2x10 material and save the wait and money. This jig is made from 16-in. pieces of 2x8 framing and 1/2-in. plywood (see illustration). Setting the plywood guide on the jig to your circular saw requires some trial and error. Adjust it so the blade leaves a slight reveal on the top of the cap. Secure the cap to the posts with construction adhesive and 3-in. galvanized finish nails.

Set the jig fence by clamping a scrap 2x10 (1-1/2 in. x 9-1/4 in. x 9-1/4 in.) to the outer support of the jig. Set your circular saw to a 15-degree angle. Run your saw through the jig. Adjust the fence so your saw blade just cuts through the top of the cap. Set the square 2x10 cap material in the jig and cut the bevel on all four sides. Sand the caps to remove any saw marks.

Looks like these could be made from 2x6 material for 4x4 posts as well. :Thumbs:
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