While using a tablesaw to do a 45 degree beveled edge on a 3/4″ x 12 1/8″ x 54″ panel wall the fine cut blade burnt the cutting plane edge when the board momentarily caught on the edge of an extension table. To remove the burn marks and saw marks I sanded the edge. Now I have a tapered edge that is 11 7/8″ on one end and 11 13/16″ on the other end.
I thought of joining and gluing the back edge with a 1/2″ wide strip and then cut to the final dimension, however I have adjustable shelving holes drilled and aligned already in place.I’m thinking that this would not work because it would throw the holes out of alignment.
Your thoughts and or suggestions would be appreciated!
Butch
Replies
Butch, unless the depth is critical, recut the bevel opn both pieces to match at 11 13/16. If you must have 12 1/8 depth, glue the additional 1/2" on the back of each which will keep the shelf brackets at the same spacing.
I'd 'true' up the edge with a hand plane and a shooting board.. and glue on a 'shim' of what you need to size the length in order to align the holes.. Then hand plane to size you need on the shooting board. Sounds like you are not off that much so it may work.. Well, if you have a really good glue joint and the grain is matched the best you can..
Or start over!
Thanks Will for your reply, I'm not familiar with what a shooting board is. Can you elaborate?
Butch
One suggestion is to make sure your table saw is tuned properly. Measure the distance from the slot to the front and back of the blade with the blade at 90 and 45 degree angles. Most people only tune the saw with the blade at 90; if you have a difference of >0.004" when the blade is at 45 degrees, you trunion is out of alignment and will cause burning and sticking when you are cutting at 45 degrees.
This may not help you with your present issue, but it will help prevent it from happening again (and again, and again...)
To align the trunion, you need to place shims either at the front or rear table top bolts (to tilt the table either up a bit at the front or rear).
Paul
Thanks for the tip, I will definitely check that out.
Butch
Assuming the table saw is a contractors version, the trunnion assembly is probably being pulled out of alignment by the motor when it's tilted to 45*. In some extremely bad cases, there's the more severe problem of the assembly being out of square, but that doesn't sound like the case here. This shifting of alignment at 45* is a sad fact of life for many contractors saw. It's been highlighted in the current issue of American Woodworker, and they suggest putting on an auxillary fence that's shimmed at one end to make it parallel to the saw blade.
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