|Project by Dick, & Barb Cain||posted 10-24-2006 06:11 PM||12114 views||8 times favorited||15 comments|
A couple of years ago, I had some boards that had been drying on a shelf in my shop.
They where from a Green Ash tree that the city had cut down in my boulevard. I asked if they could save me a chunk of it.
One of my son’s is a percussionist, & collector of drums, So I decided to make him some Cajon’s. A “Cajon” can either be a cylinder, or a box with a wooden head.
I’d like to explain how I made these.
I made a 20 sided cylinder with 3/4” material.
In order to get the approximate size boards for the circle, you divide the circumference by 20. To find the bevel angle of each board you divide 20 into 360, which gives you 18 degrees. The divide that by 2 & get 9 degrees. That’s the angle of the cut on each edge.
Then you lay out two strips of duck tape on your bench, a few inches longer than the circumference. Then lay out your strips, & tightly roll them into a cylinder for a dry fit. If your joints fit good. Then unroll, & apply polyurethane glue & reassemble & clamp. Then measure it, & make adjustments making sure it is round.
Then I temporarily glued a 1” X 2” across the top with my glue gun. Then with my circle jig I routed a 1/8” deep rabbet on the inside of top for 1/8” plywood. Then I set the router circle jig to cut to size of the opening for the 1/8” plywood top. Then I removed the temporary 1” X 2”, & glued on the top.
I used a belt sander to round the exterior making a slight taper like barrel. The round dots of Walnut on the drums are just decorative. I made them with a plug cutter.
The finish I used was Satin Lacquer.
They also make router bits for cutting 9 degree angles with a router table. you may be able to find some more information for making cylinders on the Internet.
-- -** You are never to old to set another goal or to dream a new dream ****************** Dick, & Barb Cain, Hibbing, MN. http://www.woodcarvingillustrated.com/gallery/member.php?uid=3627&protype=1