Smoothing out inside curves

[Deane Allinson]

I am working on a couple of chairs. It is mostly angular except for the lower portion of the back legs. I have a couple of bobbles in the radius when I cut it out. Any suggestions on how to smooth this out? It is a 24" radius. I am trying a rasp and extending out the blade in a low angle block plane with some success. There is bound to be a better way without a circular plane.
Deane

[Andrew Gibson]

How about a spoke shave and/or card scraper?

The last chair I used the spoke shave was a god send. (I had just inherited my first spoke shave)

[Brian Kent]

Contour planes:
http://www.leevalley.com/US/wood/page.aspx?p=46321&cat=1,50230&ap=1

Cork sanding blocks rounded over to match the curve.

Sanding drums:
http://www.leevalley.com/US/wood/page.aspx?p=20196&cat=1,42500,42501

[Deane Allinson]

The curve is an 1 1/4" flat inside curve, like the edge of an arch.

[john brenton]

I don't know if I'd do this with an almost finished chair, but when I fail remember to make my curves match my tooling capability I scrub across the grain in the curve with my kanna or rounded molding pla
ne, taking super small bites. It can of course cause tearout, but I usually pull it off with no damage.

A dowel with sandpaper or a cambered gouge might work in that small space you describe.

The curve is an 1 1/4" flat inside curve, like the edge of an arch.

[Jonathan McCullough]

A cigar spoke shave might work, if I'm understanding your problem correctly. Alternatively, maybe you could round over a piece of wood in the appropriate size with a 24" radius and attach some sand paper with some contact cement?

[Deane Allinson]

Thanks, The spoke shave worked perfectly. I had an older (1980's English) Stanley 151 in the back of my tool cabinet. Out of site, out of mind.
Deane