Jointing vs table saw? - Woodworking Talk - Woodworkers Forum
 
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post #1 of 3 Old 03-10-2010, 09:05 PM Thread Starter
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Jointing vs table saw?

I don't have a jointer, so I was reading up on how to joint an edge with a router table. It seems pretty easy (http://www.woodshopdemos.com/rtrplnr.htm), but I am wondering why this is so different than just ripping the board on a table saw?

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Dave
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post #2 of 3 Old 03-11-2010, 12:02 AM
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The reason is the fence. On a table saw the work piece is between the blade and the fence. Irregularities can cause it to bind and kickback and you won't necessarily get a straight edge as the fence is straight and not offset. On the router the bit (should be) enclosed in the fence with only what you need showing. By adding the offset you are giving support to the new edge that is being proscessed by the bit. Several small passes will eat the irregularties from the board. You can make a jig for your table saw that is quite easy and effective. Just google table saw jointer jig and choose one you like. They are all pretty similar. I personally like the ones with the hold downs on them.
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post #3 of 3 Old 03-11-2010, 07:48 AM
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The key to using a TS for straightening an edge is to use a piece of ply, MDF, or melamine with a known reference edge as a sled. The known reference edge goes against the fence, the workpiece overhangs the opposite edge, and the board gets secured somehow to the sled. The sled can also be mounted to a miter bar and used in the miter slot.

One thing any of the substitutes for edge jointing don't do is the flatten a face. If the board isn't flat, you won't be able to get a true 90 edge.

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