"Pawel" writes:

So i got my first router and after few plays with making garage shelfs i
want to make a real bookcase.
I was thinking of starting with pine, but am afraid that it may be to soft
to last as a nice bookcase.

What do you intend to do to your bookcase that softness matters?
If it's used for the reference books in a public library abrasion form
putting books in and taking them out might be an issue, but on more
ordinary usage frequency (per book) you wont damage the shelves.

--
Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
Phone: +49 228 73 2447 FAX ... 7869
Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23