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**Glenmore** · 02-16-2005, 07:28 PM

I interested in getting me some spiral bits. I want to know should I get up or downward for using in my router table. Or doesn't it matter. Thanks

kp91 · 02-16-2005, 09:33 PM

I have upspiral bits that I use for my box joint jig and for general purpose work. They pull the waste out of the cut. I do not have any down spiral bits which are supposed to be the best when cutting grooves in the top veneer of plywood. The downward shearing action leaves a clean cut, where the upward shearing action of an upspiral bit would cause a little fuzzing.

If I could only have one type in my shop, it would be upspiral.

***Come to think about it--- I do have 1 downspiral--- the inlay kit I have uses a downspiral bit, with very nice cuts*****

Just a humble opinion,

**-Sam-** · 02-17-2005, 11:31 AM

Glenmore,

I agree with kp91. I have upspiral bits myself. The downspiral bits are more for that nice finish look.

Boricua

**Glenmore** · 02-17-2005, 11:46 AM

Thanks guys that's what I'll go with.

02-16-2005, 07:28 PM	#1
Glenmore Forum Moderator Supreme Forum King Join Date: Sep 2004 Location: Mountain Top Pennsylvania Posts: 1,614 View Glenmore's Gallery	Report This Post! up or down spiral bit I interested in getting me some spiral bits. I want to know should I get up or downward for using in my router table. Or doesn't it matter. Thanks
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02-16-2005, 09:33 PM	#2
kp91 Marine Engineer Forum King Join Date: Sep 2004 Location: Fredericksburg, VA First Name: Doug Posts: 921 View kp91's Gallery	Report This Post! I have upspiral bits that I use for my box joint jig and for general purpose work. They pull the waste out of the cut. I do not have any down spiral bits which are supposed to be the best when cutting grooves in the top veneer of plywood. The downward shearing action leaves a clean cut, where the upward shearing action of an upspiral bit would cause a little fuzzing. If I could only have one type in my shop, it would be upspiral. *Come to think about it--- I do have 1 downspiral--- the inlay kit I have uses a downspiral bit, with very nice cuts*** Just a humble opinion, __________________ Doug 1 John 1:9 Last edited by kp91; 02-19-2005 at 10:34 AM. Reason: Brain Fade
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02-17-2005, 11:31 AM	#3
-Sam- Retired Moderator Forum King Join Date: Sep 2004 Posts: 632 View -Sam-'s Gallery	Report This Post! Glenmore, I agree with kp91. I have upspiral bits myself. The downspiral bits are more for that nice finish look. Boricua
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02-17-2005, 11:46 AM	#4
Glenmore Forum Moderator Supreme Forum King Join Date: Sep 2004 Location: Mountain Top Pennsylvania Posts: 1,614 View Glenmore's Gallery	Report This Post! Thanks guys that's what I'll go with.
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