|Forum topic by CaptainSkully||posted 01-30-2010 06:46 PM||3386 views||0 times favorited||11 replies|
01-30-2010 06:46 PM
While in the shower, letting the sawdust sluice off me, I had a couple of thoughts. I’m making the Rodel chairs for our dining room, and yesterday, I made the template for routing out the back leg.
My first thought that a CNC router would make short, accurate work out of these very quickly. The back leg can be described in AutoCAD, Mach3, or some other software that can be imported into the mill. Since the legs are described by straight lines, they would come out very crisp. I’ve helped my buddy build a CNC machine, but never had the funds for one myself. It may be an interesting thought if I ever had to produce these for anyone else.
The second thought (the real question), and the most intriguing is how to glue them up. Currently, I’m planning on laminating two 3/4” boards to make a 1-1/2” board to cut the legs out of. This will of necessity show the seam right down the front of the chair leg. I’m using a rather dark finish and I match the grain as much as possible, so I’m not that worried about it. This will also mean that the router will have to go against the grain at an angle somewhere along the leg and possibly produce chip-out. I guess a climb-cut could always work for the trouble spots.
Then I realized, what if I laminated thin strips in an MDF form to bend the assembly to the rather shallow (7 degrees) angle of the back legs? This would allow me to have no seam on the front, and the seams on the sides would be almost invisible with the grain flow. It would also have the added benefit of making the wood more “fair” along the curve, which would mean the router wouldn’t have to go against the grain at an angle, which would reduce the chance for chip-out. This is obviously a whole lot more work, but the end result might be a whole lot better. Spring-back could be an issue too, which would destroy the 7 degree angle.
What do you guys/gals think, and what am I missing? This may delay my leg-making a bit, but I’ve got other stuff to work on, and I think it’s important enough to post the question.
-- You can't control the wind, but you can trim your sails