On Fri, 27 Feb 2009 04:27:31 -0800 (PST)
Arthur 51 wrote:

Hi all.
I quite fancy douglas fir for my bookshel/cabinet project.
SL Hardwoods have 290mm x 19mm x 3m (finished sizes)
My question is, is 19mm adequate thickness for the verticals which
will be 2.8m high?

Thanks.

Arthur

I made some bookshelves from a similar pine last year. 18mm
everywhere. The verticals are no problem, but you have to be careful
of the width with books - they can be very heavy.
I opted for verticals every 300mm, but another way is to reinforce the
shelves in some way.

R.