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Feed Block Tutorial
This is what a bunch of the feed blocks in kits look like.  The first
thing to do is take the nasty thing completely apart.
     The feed block disassembled for cleaning and sand or bead blasting.
Blast only the brass and steel block itself, solvent and wire brush the rest
of the parts.
     The feed block and parts cleaned and ready to be put back together.  
Lube all moving parts with white grease, I like Lubriplate 1200.  It doesn't
hurt to also treat the steel parts with Breakfree and I spray the block with
WD 40 after blasting.