Through Hulls

02/07/08

I’ve drilled out the hole in stages.  Here is the final run from 15.5mm to 16mm with the reamer.

I’m using a floating reamer holder which compensates for any tiny misalignment of the machine spindle to the bore.

Using the “Half speed, twice feed” rule, I ran this through at 140 rpm quite fast using Trefolex and not coolant.

Submersible Build Log