[PSUBS-MAILIST] lathe

[Alec Smyth via Personal_Submersibles]

Pure PSUB philosophy - Hank exemplifies why Lego have it all wrong when
they sell kids the exact set of blocks required for assembling a specific
model.

:)

Alec

On Wed, Dec 16, 2015 at 2:21 PM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All,
> For the last four days I have been building a flange facing machine.  For
> those who don't know what that is, it is a portable lathe that clamps to a
> pipe or submarine to machine a flange.  In my case the hatch land on my new
> deep diver.   After welding the conical land ring into the hull it will
> twist from welding.  The conical face will be distorted and that is no
> good.   This machine I built will re-machine the face of the seat.  After
> re-machining the land, I will then machine the hatch conical face in my
> lathe  to match the seat.  I will also machine the centre shaft of the
> hatch with a temporary bearing assembly, allowing me to mount the hatch so
> it rotates on the seat.  This will allow me to lap the seat to a perfect
> fit.  That is how a guy on a budget builds a deep diver hatch assembly.  :-)
>
> The flange facing machine is built entirely from stuff I have in
> inventory, the pivot bearing assembly is from a 3\4 ton truck reared, the
> clamps to hold it in place are tell-post rods, the drive is a hydraulic
> motor from my old launch cart, the power feed is a wheel chair drive motor,
> and the compound slide for the cutter is off my old lathe.  I will power it
> off my mini excavator, so no point in building a hydraulic power pack.
>
> I will be testing it on the mating ring for Gamma's escape pod.
> Hank
>
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