Dang, I don't want mine to fall at all! My dad has a wood shop, and usually has a lot of scrap. I usually grab several 10x10x1 pieces from his place and stack them up to add whatever hieght I need.
I don't know that I'm into welding to my jackstands, though. Part of thier strength is the design for wieght distribution, and I wouldn't trust myself to be able to duplicate that evenly in a weld. Maybe if a more reputable welder did it, but that still makes the whole thing bigger, and more of a PITA to store/transport...
Another thing that might work well (and I've done this for years with faith), using an old (but not rotted) rim under each stand, and stacking old mounted tires under the frame rail near where I'm working, so if it does fall, the tire stack holds it up enough to keep me from catching the vehicle. I don't really use this with the K5 unless I'm under the axles, cause the pumpkin-to-body/frame distance leaves plenty of room for my body if it lands on the pumpkin.
I have a set of 6 ton stands that are around 2 1/2 feet fully extended. I'd usually rather put something under the base than raise that skinny neck to full hieght, though.
Hmm. Cinder blocks...
Ratch
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