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45 degree roundover

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Forum topic by elbarneso posted 03-17-2015 05:53 PM 627 views 0 times favorited 9 replies Add to Favorites Watch
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elbarneso

23 posts in 1705 days


03-17-2015 05:53 PM

Topic tags/keywords: router question

I have a wooden post with a triangular cross section (one rt angle, two 45 deg). The short sides are about 2 inches. The post will be exposed and I want to roundover all the corners more than just easing them with sandpaper.

Has anyone ever seen a router bit or other tool that put a significant roundover on a 45 degree side?

Thanks,
Tim


9 replies so far

View pjones46's profile

pjones46

986 posts in 2103 days


#1 posted 03-17-2015 06:04 PM

Would help to see the profile of what you are working with and what you wish to create.

-- Respectfully, Paul

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elbarneso

23 posts in 1705 days


#2 posted 03-17-2015 06:13 PM

I am basically cutting a square post on the diagonal, then want to round over all the edges, so the cross section looks something like this…!

https://s3.amazonaws.com/vs-lumberjocks.com/nldbxh7.jpg!

View SirIrb's profile

SirIrb

1239 posts in 691 days


#3 posted 03-17-2015 06:15 PM

May not help but this seems like a great place to custom grind your own shaper profile if that is an option. I havent seen that you are looking for.

-- Don't blame me, I voted for no one.

View Fred Hargis's profile

Fred Hargis

3928 posts in 1954 days


#4 posted 03-17-2015 06:18 PM

Take a look at beading bits, it’s possible you might be able to use one to get enough of a roundover. At least that’s where I would start. Not sure how I would cut it, but I think it could be made to work. Too be honest, I might try a block plane first.

-- Our village hasn't lost it's idiot, he was elected to congress.

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pjones46

986 posts in 2103 days


#5 posted 03-17-2015 07:03 PM

I see a router table in your shop. Have you tried a standard round over bit with two passes on the 45’s one using the leg flat on the table and the next pass using the Hypotenuse of the triangle.

It will not be perfect but it will be close and reproducible without grinding a special cutter.

You might want to look at some profiles HERE and HERE .

-- Respectfully, Paul

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elbarneso

23 posts in 1705 days


#6 posted 03-17-2015 08:47 PM

Thanks everybody for the great ideas and links. It looks like there are some window sill and counter/table edge router bits that might work.

The other idea I am considering is considering is to use a beading bit and a router table fence, but put the workpiece into a jig that raises the 45 degree corner up off the table, so that the corner goes straight into the center of the beading bit. My thought it that will make the roundover more even on both sides, and I can sand out the rest.

I’ll do some trials and report back if anything comes of it – thanks again!

View jakep_82's profile

jakep_82

105 posts in 1766 days


#7 posted 03-17-2015 09:05 PM

Just one post? 10 minutes with a block plane.

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elbarneso

23 posts in 1705 days


#8 posted 03-17-2015 09:13 PM

Jake – there will be 8 posts total, each about 1 ft long. I may still do this with hand tools, but I was just hoping there was a router bit for it.

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jakep_82

105 posts in 1766 days


#9 posted 03-17-2015 09:38 PM

I guess it comes down to shop time versus cash. I have more of the former than the latter, so I would use a regular roundover to knock the majority of the corners off, and then finish it with a block plane.

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