| Project by Olaf Gradin | posted 267 days ago | 975 views | 2 times favorited | 14 comments | ![]() |
I made up a jig out of a magazine recently for my table saw. It’s a simple, but effective miter extender. I put forth the unnecessary effort of adding a spline joint to the design (using padauk as the spline material). I did it because the glued butt joint called for looked weak. What I didn’t realize until later was that the article said to note grain direction on this part to insure that your were not gluing end grain. I didn’t note grain direction – something I really need to pay more attention to. When I read this part later, I realized that my spline joint was ineffective as a strengthening measure because it was glued to end grain on one piece and long grain on the other. Of course, in a piece such as a marking slide on your table saw jig, this matters very little. It will not likely encounter the force to break it unless it gets dropped or something. So in the end, I added a pretty red spline for aesthetics and a learning experience. Oh well.
The project was made using magnolia for the length, sycamore for the stop-block, and padauk for the spline.
-- It takes a viking to raze a village. &mdash Blog'r: http://www.gradin.com
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14 comments so far
rikkor
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7632 posts in 359 days
posted 267 days ago
It is good to have a stop on the miter fence for repeatable cuts.
-- Maplewood, MN
rjack
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110 posts in 339 days
posted 267 days ago
It looks like you will get alot of use out it!
-- Roger - Havertown, Pennsylvania
Andy
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298 posts in 393 days
posted 267 days ago
This is a handy device,thanks for the tip!
But I think you are being too hard on yourself.I agree that edge grain would have been a better gluing surface but the spline adds a lot of strength to this type of joint regardless of grain direction.Plus it just looks nice.
-- " Stubborn tenacity substitutes for natural ability" ANDY
SPalm
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727 posts in 366 days
posted 267 days ago
Nice looking extender. Mine is much uglier. I need to spend more time on such things, they are a joy to use.
I guess that is a home made T-Track? If so, did you use a keyhole/picture_hanger type router bit?
Chill over the spline, but I guess it is a ‘note to self’ to watch out for this situation in the future. You could always add a dowl or two at this point if you are worried.
-- Stevethepeeve -- I'm no rocket surgeon
mrtrim
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1546 posts in 365 days
posted 267 days ago
looks like a very handy jig
GaryK
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8483 posts in 473 days
posted 267 days ago
Good looking miter fence. Should come in handy.
-- Gary, East TX -- The longest journey begins with a single step.
TomFran
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2360 posts in 479 days
posted 267 days ago
Great accessory for the table saw! Nice work.
-- Tom, Surfside Beach, SC - Romans 8:28
Dominic Vanacora
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400 posts in 354 days
posted 267 days ago
I used the table saw and I could have used this with greater accuraticy and safer use. Nice I idea thank for sharing.
-- Dominic, Trinity, Florida...Lets be safe out there.
Olaf Gradin
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53 posts in 324 days
posted 267 days ago
@SPalm: It is a homemade T-Track. I didn’t have the bit you’re talking about, so I made it with the table saw. I find changing bits on my router frustrating, so I tend to look for other options. In this case, I made the fence from two pieces of wood glue-laminated together. I cut the bottom of the T-Track with a single (non-through) table saw cut down the length of my wood. I then cut the wood in half lengthwise. With a waxed-spline inserted into the matching kerf cuts, I was able to glue the two halves together to make the fence you see pictured. After the glue dried, I merely tapped the waxed spline with a hammer and pulled it out of the groove. In case you’re unfamiliar with this process, it’s done to keep the kerfs aligned perfectly during the glue up. I then used the table saw to cut out the track run. I don’t have a dado blade, so I just cut it twice to dislodge the piece floating over the spline cut. It takes some careful measuring to ensure your resulting cuts will leave a run in the track slightly larger than your bolt. I posted about some problems I had in this process here. The beauty in doing this part on the table saw is that you only have to measure once (or twice in one place, anyway). When using a rip fence on the table saw, you can quickly center cuts like this by simply flipping the board over and repeating the cut on the other side of your board. It’s probably common knowledge, but I suspect that some people forget the simple stuff and lose time to “second guesses.”
-- It takes a viking to raze a village. &mdash Blog'r: http://www.gradin.com
Chris
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1229 posts in 476 days
posted 267 days ago
Nice Design…
-- Chris
Grumpy
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5628 posts in 335 days
posted 267 days ago
Great jig Olaf. Even though you have had some problems it will still be a very handy accessory.
-- Grumpy - "Always look on the bright side of life"- Monty Python
USCJeff
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804 posts in 553 days
posted 260 days ago
Nicely Done. You should check out TomFrans extension poster a few days ago. I like how he used sandpaper. Worth a shot.
-- Jeff, South Carolina
HokieMojo
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335 posts in 212 days
posted 106 days ago
I really like this project. I’m intrigued by the use of magnolia. Is this readily available? I’ve been looking around but can’t find any suppliers on the internet. nice work.
Olaf Gradin
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53 posts in 324 days
posted 105 days ago
It’s not real common, even in northeast Georgia where the trees are. I’m not exactly sure why you don’t see more of it, but I can say the trees have to be fairly large. With the branches arranged around the trunk its entire length, it can very knotty. Mine is practically void, but I picked the boards that way.
-- It takes a viking to raze a village. &mdash Blog'r: http://www.gradin.com