Through Hulls

25/06/08

Here I’m starting to make the through hulls.  I’ve cut, faced and turned this piece of 316L stainless to the right length.  Then I centre drilled it and drilled it through to 8mm at 1120 RPM.  Here I am about to drill it through again to 15.5mm at 470RPM.  The hole will be reamed out to 16mm.     

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