So I am considering dropping $400 bucks on some
rack from stdsteel.com.

I am planning on buying (2) 4ft and (3) 6ft sections
of 20 PA, 20 Deg pitch, 1/2 face by 1/2 wide steel
gear rack.

The 4ft and two of the 6ft sections would be machined
to matchup by the company to form two 10ft lengths.

All the rack would be drilled and tapped by them with 3/16" holes
1" from each end and spaced evenly across the rack with no
more then 12" between holes. The holes would be
coutersunk so flathead machine screws could be used.

What do you think? Good buy? I want to make the right choices
when building this table, as the wrong ones cost a lot of money

Thanks,
Mike