On Tue, 23 Mar 2010 14:39:47 -0700 (PDT), trvlnmny
wrote:

I rocked too hard on the old rocking chair and broke the 2 rockers. I
do not see a problem with making replacement rockers. Where I see a
problem is fitting the new rockers on to the legs. The 2 legs on each
side are not parrallel to each other. From the bottom of the seat the
distance between them increases towards the bottom. The bottom of the
legs are round tenons, I am unable to figure out how I will be able to
get these tenons into the mortises on the rocker.
Any help will be appreciated!!


Cut tenons in thechair posts, set the chair on the rockers, scribe the
tenon outlines on the rockers, chop the mortises with a chisel and
then secure with screwa from the bottom.

That's how they teach it at Homestead Heritage. Paul Sellers shows the
technique in the Feb 2005 issue of Woodwork Magazine (RIP)
Email me and I will send you a xerox of the page if you can't find the
issue.