I made this custom boring bar tool with a hand-ground Cobalt HSS cutter to thin out part of the inside bore of an expensive PTFE tube for an urgent RF-transparent 10 GHz Microwave Antenna Radome machining job. I bought the wrong size tube, the wall thickness was way too large. Can I recover my financial loss and still deliver the project on time?

The radome was far too long to line-bore on my Colchester 1800 lathe. The walls needed to be thinned over part of the length to reduce RF interaction with the 10 GHz microwave waveguide slot array antenna inside the radome. PTFE is about as rigid as Jello, so it was amusingly challenging, and I nearly messed it up completely.

Lots of machining action on the Bridgeport mill and Colchester lathe.

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