some more drivel from another debate
re insurance on the framebuilder list...
my two posts:

if you just make ONE frame and even if you give it away,
and never own a car or have a savings account, get product
liability insurance nonetheless. your bicycle will be used
by others on the open road. there are risks involved. if
you can't afford to assume the risk, make a basket!
rather than worry about how you'd fare accounting-wise,
get some insurance out of consideration for the one client
of yours who might need you to have been covered?
building a frame that someone else will use?
get product liability insurance.