I have some left over 4" channel from my diesel generator project I
recently completed and was about to begin another project.

I know I can probably buy one "ready-made" cheaper then I can build it,
but since I have most of the metal already on-hand this is the route I'm
taken.

What is the biggest bottle jack that I can use safely with the 4" channel?
6-8-10-12 ton ???

Any suggestions?

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A7N8X-Deluxe, AMD XP2500+ (Un-locked)
2x256mb Crucial PC3200 DDR ram
Palit-Daytona Ti4200/64M AGP