I have a lot of near perfect dowels (in terms of runoff) where the center grain line from one end runs the entire length, but is not quite at the center of the other end. Since I stress over details (whether the topic warrants it or not), I thought I would try making some jigs to "center" drill the dowels at a bias to straighten out the grain center to center.
In the first picture, the 3 jigs, made of delrin ofcourse, are bored to just larger than the OD of my shaft dowels for a snug fit. The depth of the bore is 2 inches. The 3/16" holes drilled through the solid portion is about 3/4" long. A #2 center drill fits very snug in the hole, so it locates well drilling by hand. The jig on the far left has the center hole drilled offcenter .04", the middle one .08", and the one on far right is .16" from center. Regarding the two shaft dowels above the two jigs, I drew a line from the intended joint end following the center grain line to the other end, and then selected the appropriate jig that comes closest to where the grain line runs. The 2nd picture shows the sleeve over the dowel, with the #2 center drill in place. Obviously, the hand drill is removed for the picture.
The .04" offcenter jig can be used for the joint end in conjunction with the others at the tip end to cover a wide range of offsets when taking into account both ends, .04", .08", .12", .16", or .20". I also scored a V mark on each jig on the side where the center hole is offset toward as a witness mark to help line up the jig on the dowel when drilling.
They seem to work pretty well, so I thought I would share the pictures and idea. I imagine this has been done before, but I came up with the idea myself and figured out how to drill the holes in the jigs accurately in terms of the .04/.08/.16 offsets.
I would be glad to make a set of 3 (bored to your specs) for a resonable price if there is any interest.
Kelly
In the first picture, the 3 jigs, made of delrin ofcourse, are bored to just larger than the OD of my shaft dowels for a snug fit. The depth of the bore is 2 inches. The 3/16" holes drilled through the solid portion is about 3/4" long. A #2 center drill fits very snug in the hole, so it locates well drilling by hand. The jig on the far left has the center hole drilled offcenter .04", the middle one .08", and the one on far right is .16" from center. Regarding the two shaft dowels above the two jigs, I drew a line from the intended joint end following the center grain line to the other end, and then selected the appropriate jig that comes closest to where the grain line runs. The 2nd picture shows the sleeve over the dowel, with the #2 center drill in place. Obviously, the hand drill is removed for the picture.
The .04" offcenter jig can be used for the joint end in conjunction with the others at the tip end to cover a wide range of offsets when taking into account both ends, .04", .08", .12", .16", or .20". I also scored a V mark on each jig on the side where the center hole is offset toward as a witness mark to help line up the jig on the dowel when drilling.
They seem to work pretty well, so I thought I would share the pictures and idea. I imagine this has been done before, but I came up with the idea myself and figured out how to drill the holes in the jigs accurately in terms of the .04/.08/.16 offsets.
I would be glad to make a set of 3 (bored to your specs) for a resonable price if there is any interest.
Kelly
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we've had enough conversions about It to tell me that.
I don't think it mattered that much to Kelly either way though, actually I think He may have been happy with the outcome, seems like he likes the colts. I do too, just like to see the under dog win sometimes, and since they were in jax It would have been nice, but they put the woop on the colts the last they played, so I knew the colts would be studying the films for last night's matchup ups. Looked acidental, but They clipped garrard early on and about blew his knee out, so he had to leave the game early, and wasn't a factor in It. I think he has a high ankle injury, but could have been worse. after that they were able to slow the run and put the pressure on the second string QB.