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Is 1/4 Upcut Spiral bit big enough for circle cutting jig?

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Forum topic by AlmostRetired posted 06-27-2018 02:27 PM 1403 views 0 times favorited 8 replies Add to Favorites Watch
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AlmostRetired

219 posts in 913 days


06-27-2018 02:27 PM

Morning LJs. Was hoping for an assist. I need to cut a small round table top (38”) out of joined 2×6 pine. I have glued up the panel and have a Longhorn Cutting Jig and a Whiteside Spiral Up Cut bit with a 1/4” cutting capacity. So, the question is as the subject states…..is a 1/4 Upcut Spiral bit big enough to use with a router and a circle cutting jig?

Thanks all,
Roger


8 replies so far

View Bill White's profile

Bill White

5123 posts in 4159 days


#1 posted 06-27-2018 02:48 PM

Depth of cut? Is the bit long enough? Is it a solid carbide bit? If so, they can be a bit brittle.
If you go slowly, and the capacity of the bit is adequate, you should not have a prob.
Just don’t hog the cut.

-- bill@magraphics.us

View builtinbkyn's profile

builtinbkyn

2653 posts in 1139 days


#2 posted 06-27-2018 02:48 PM

Maybe a better way to go is to rough cut your top with a jigsaw and then use a 1/2” bearing bit against a template made from 1/4” MDF to clean up the edge. Going the other way, you’ll need to make multiple passes with the 1/4” bit.

-- Bill, Yo!......in Brooklyn & Steel City :)

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builtinbkyn

2653 posts in 1139 days


#3 posted 06-27-2018 02:52 PM

Wanted to add, you can usually get 1/2 sheets of MDF at the big box stores.

-- Bill, Yo!......in Brooklyn & Steel City :)

View bondogaposis's profile

bondogaposis

5088 posts in 2550 days


#4 posted 06-27-2018 04:37 PM

I think it will be fine, just take it slow and do it in multiple passes. Vacuum the chips out of the groove if they accumulate. If your bit is too short, you can take it as deep as it will go and then jig saw the waste then clean up with a flush trim bit.

-- Bondo Gaposis

View bigblockyeti's profile

bigblockyeti

5285 posts in 1919 days


#5 posted 06-27-2018 06:21 PM

I’ve cut 1 1/2” oak with a 1/4” upcut bit, the bite taken at once was only about 1/4” per pass to keep e out load on the it to keep it from burning, and not overload it to the point of breaking.

-- "Lack of effort will result in failure with amazing predictability" - Me

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Rich

3876 posts in 788 days


#6 posted 06-27-2018 09:10 PM


Maybe a better way to go is to rough cut your top with a jigsaw and then use a 1/2” bearing bit against a template made from 1/4” MDF to clean up the edge. Going the other way, you ll need to make multiple passes with the 1/4” bit.

- builtinbkyn

+1

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View Ocelot's profile

Ocelot

2113 posts in 2837 days


#7 posted 06-27-2018 09:18 PM

Sounds good to me, but how does he make the template? With the 1/4” router bit, I suppose.


Maybe a better way to go is to rough cut your top with a jigsaw and then use a 1/2” bearing bit against a template made from 1/4” MDF to clean up the edge. Going the other way, you ll need to make multiple passes with the 1/4” bit.

- builtinbkyn


View builtinbkyn's profile

builtinbkyn

2653 posts in 1139 days


#8 posted 06-27-2018 09:31 PM



Sounds good to me, but how does he make the template? With the 1/4” router bit, I suppose.

Maybe a better way to go is to rough cut your top with a jigsaw and then use a 1/2” bearing bit against a template made from 1/4” MDF to clean up the edge. Going the other way, you ll need to make multiple passes with the 1/4” bit.

- builtinbkyn

- Ocelot


Yes. Same method using the circle cutting jig. Either way will work. I just feel you can achieve a better result by first roughing out the circle then cleaning it up. You then have the template to make more tops, if that’s the intent.

Heck, It’s pine/DF and not a hardwood. You can probably get decent results by just using a jigsaw to cut the top then sand to the line to clean it up.

-- Bill, Yo!......in Brooklyn & Steel City :)

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