With the notable exception of securing a shoulder vise,

I can't see why it's necessary. There is just no way that you are going to
be able to point apart a lamination that is somehing like 2" by 6' of glue
area.

Assuming that your side aprons are allowed to move (tightly secured in only
at one point), there is no crossgrain seasonal forces to split the top.

-Steve


Yes I agree with you, thanks for the advice.

--
Alex - "newbie_neander" woodworker
cravdraa_at-yahoo_dot-com
not my site: http://www.e-sword.net/