Show us your home made tools

Shaft mount valve spring compressor...Mazda style! May work on a Mopar too if I make the shaft cut fatter
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Old broken jack handle and 2 pieces of 1/8" metal from a past 1 time project. Slip hooks under rocker arm shaft and pry down spring. My 'shaft' is a 13" piece of old 1/2" ratchet extension so no harm if it gets scratched. YMMV.