I invented a new tool, and I'll share.

[slapthefunkyfour]

this has probably been thought of before, but I've never seen it. It seems too easy, but it works.

All you need is couple 1/2" washers, 2 small scrap pieces of metal, a big C clamp, a pair of vise grips, a welder, a hacksaw, and a tiny bit of brains.

Voila!!! Valve spring compressor(I recommend using the little plastic/rubber pad on the screw side to protect the bottom of the valve). Alternate version: don't include the washers, and you have an adjustable quick clamp.