20 years ago I built a bookcase out of 2x10's with no back (I still have
it). It has a very noticeable list to one side. The shelves are dadoed
about 3/4" , screwed and glued into the verticals. I wish I had put a back
on it. Someday I'll get around to correcting that error. On the plus side,
I haven't made that error again.

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Regards,
Mike
Flower Mound, Texas
"Alan Smithee" wrote in message
news:iKAIe.119460$s54.20459@pd7tw2no...
I'm building a narrow-tall shelf for a friend. Using three-quarter inch
ply.
It's over 8' tall and about 21" wide. About 7or 8 shelves which I'm
dadoing
into the sides. The friend doesn't want a back on it though and I'm afraid
the whole thing may lack stability. What should I do? Tell 'em it needs a
back or it might fall apart? Reinforce with gussets? Or just glue the
dados
and hit it with some brads and clamp the be-jesus out of it? Thx.