[PSUBS-MAILIST] taper fit up

[Private via Personal_Submersibles]

Hank, if you're down to 0.003 isn't it just a matter of putting lapping compound between the hatch and land, and rotating the hatch a bunch of times? I know it's heavy, but maybe with a big lever you can walk around like an 18th century seaman turning a capstan. 

Best,

Alec



> On Jan 11, 2016, at 7:01 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Tom,
> Not sure what you mean about indexing.  My original plan was to use the centre bore for the hatch release as a guide to rotate the hatch over the land with lapping compound.  The problem with that idea is, the hatch has to make a few trips back to lathe and getting it back to the exact location is pretty tough.  Then the centre is off a few thousandths.  I am struggling with the final .003  I can't seem to get it closer.  I think my lathe might be lacking the accuracy.  I know,,,blame the tools ;-)  
> I need to sleep on it, I have the blueing on the way.  If it was easy, everyone would be doing it.
> Hank
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