welding table... just tacking?

[Chuck U&R]

Consider this -

Instead of welding or bolting the top to the base try tacking 4 pieces of angle iron to the bottom of your top inside the top frame of the base.

Place them so you can slide the top to one side or another without upsetting the balance.

This will give you extra inch or two of overhang when needed for clamping.

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[oxy moron]

Patton Steel has what you want, go south on Euclid to Mission and hang a left. You will see signs on the left side when you get to Sultana. If you cross the railroad tracks or reach the Sunkist Oranges Plant, turn around. You can't miss it.
http://www.pattonscorp.com/catalog/

I've been getting my stuff from Patton's. Interesting place, friendly folks inside the store. The guys working out in the yard are a little slow though, probably due to understaffed.

are there any scrap metal sellers in this area?