Valve spring compressor
I chose a c-clamp instead of the f-clamp for a couple reasons. The first is that all my f-clamps are too expensive to sacrifice. The other is that I like the threaded rod to capture progress, as opposed to the friction/pressure that the f-clamps use.
Whatever works though, right?? Anything is better than those cheap spring compressors that fly off with the slightest bit of pressure.