spiral bit on table mounted router - Router Forums
 
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post #1 of 4 (permalink) Old 02-15-2012, 08:05 AM Thread Starter
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Default spiral bit on table mounted router

I understand the difference between up cut and down cut bits for hand held routers, but say I am using a spiral bit on my table mounted router. Since I am removing material from the bottom of my lumber and gravity will cause the chips to fall down, especially with the vacuume attached, why not use downcut spiral bits on a router table on solid wood? Just wondering....
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post #2 of 4 (permalink) Old 02-15-2012, 08:45 AM
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Originally Posted by Katy's dad View Post
I understand the difference between up cut and down cut bits for hand held routers, but say I am using a spiral bit on my table mounted router. Since I am removing material from the bottom of my lumber and gravity will cause the chips to fall down, especially with the vacuume attached, why not use downcut spiral bits on a router table on solid wood? Just wondering....
Lee
I belive i would use a up cut any way. the good side of the wood is down ? and the up cut i belive would give a smooter cut? The down cut may cause a little bit of ruff cut ? Not that bad tho.

del schisler
port st. lucie, florida
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post #3 of 4 (permalink) Old 02-15-2012, 09:29 AM
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Quote:
Originally Posted by Katy's dad View Post
I understand the difference between up cut and down cut bits for hand held routers, but say I am using a spiral bit on my table mounted router. Since I am removing material from the bottom of my lumber and gravity will cause the chips to fall down, especially with the vacuume attached, why not use downcut spiral bits on a router table on solid wood? Just wondering....
Lee
Upcut/downcut refers to the way the bit pulls the chips. Up cut it will pull the chips toward the collet... regardless whether the router is upside down or not. Downcut is the the converse.

John Schaben

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post #4 of 4 (permalink) Old 02-15-2012, 11:08 AM
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Regardless of your router being used free hand or table mounted follow these rules:
Solid wood - up cut spiral
Veneered or plywood - down spiral
Complete edge routing on veneered or plywood - compression spiral

Mike
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