Finished view Pilot A hole with a 7/16" hardened bit about 10mm down follow up with a 11/64" bit. Tap the "plunger" with a 5mm .8 thread hardened tap. Last modified: Jun 6, 2017
Dunk tank Soak in rust remover first until rust is gone, then soak in CLR to clear both passage ways. A little compressed air to verify all debris is gone. Last modified: Jun 6, 2017