[PSUBS-MAILIST] Gamma ring machining

via Personal_Submersibles personal_submersibles at psubs.org
Sat Mar 7 18:32:31 EST 2015


I'm a ham in Sacramento, Ca.

Keith
K6FEE

Hugh Fulton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

>Hi Brian,
>
>I have a Ham guy working with me.
>
>Contact me off line.  hc.fulton at gmail.com
>
> 
>
>Hugh
>
> 
>
>From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Brian Cox via Personal_Submersibles
>Sent: Sunday, 8 March 2015 10:10 a.m.
>To: Personal Submersibles General Discussion
>Subject: Re: [PSUBS-MAILIST] Gamma ring machining
>
> 
>
>Hey Alan,
>
>                    Do you know any Ham radio guys down there ?
>
> 
>
> 
>
>Brian,
>
> 
>
>KK6IRC
>
> 
>
>73
>
>--- personal_submersibles at psubs.org wrote:
>
>From: Alan James via Personal_Submersibles <personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
>Subject: Re: [PSUBS-MAILIST] Gamma ring machining
>Date: Sat, 7 Mar 2015 19:09:51 +0000 (UTC)
>
>Hank,
>
>had a quick search but couldn't find any suitable lapping
>
>solution for a home builder. There were referances to thick
>
>plate glass with a bonded diamond surface & marble as
>
>lapping plates.
>
>Alan
>
> 
>
>  _____  
>
>From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>Sent: Saturday, March 7, 2015 11:29 PM
>Subject: Re: [PSUBS-MAILIST] Gamma ring machining
>
>
>
>Alan,
>I have been told that it would work, but I am not convinced.  I would think the machined disk needs to be harder so it does not wear down.  Honestly I just don't know.  
>Hank--------------------------------------------
>On Fri, 3/6/15, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>Subject: Re: [PSUBS-MAILIST] Gamma ring machining
>To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>Received: Friday, March 6, 2015, 9:30 PM
>
>So
>do you think it would work with a flatsheet
>rotating on your reinforcing ring?I
>had thought of doing this with the hatch & landing,
>toget a
>perfect seal, not sure if I would need an orbital
>motionor
>not.Alan
>    
>    From: hank pronk via
>Personal_Submersibles
><personal_submersibles at psubs.org>
>
>To: Personal
>Submersibles General Discussion
><personal_submersibles at psubs.org> 
>
>Sent:
>Saturday, March 7, 2015 12:52 PM
>  Subject: Re:
>[PSUBS-MAILIST] Gamma ring machining
>
>  
>
>Alan,
>Yes I
>have done lapping in the past.  I mostly lap valves in
>engines.  It works great on two tapered faces.  
>Hank--------------------------------------------
>On Fri, 3/6/15, Alan James via
>Personal_Submersibles <personal_submersibles at psubs.org>
>wrote:
>
>  Subject: Re:
>[PSUBS-MAILIST] Gamma ring machining
>  To:
>"Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>  Received: Friday, March 6, 2015, 6:39 PM
>  
>  Hank,are you
>  familiar with lapping?Rubbing
>
>two surfaces together with abrasive paste in
>  betweenhttp://en.wikipedia.org/wiki/Lapping
>  Haven't
>  done it but have
>seen it in operation; you can get a very
>
>smoothsurface
>  with this technique. Not sure
>if you could adapt it to your
>  newflange
>  facing machine.The
>  machine I
>saw in operation was slow but required very little
>  attention.Alan
>   
>     
>    From: hank pronk
>via
>  Personal_Submersibles
>
><personal_submersibles at psubs.org>
>  
>  To: Personal
>  Submersibles General Discussion
>  <personal_submersibles at psubs.org>
>
>  
>  Sent:
>
>Saturday, March 7, 2015 12:18 PM
>  Subject:
>Re:
>  [PSUBS-MAILIST] Gamma ring machining
>  
>   
>
>Steve,
>  I am half way done
>
>building my flange facing machine,  I should be mostly
>done
>  tomorrow.  My rig already weighs
>about 700 lbs.  I think
>  it is important
>that it is heavy and mine is built heavier
>
>than the ones on YouTube.  If it fails I can do as you
>  mention.  I actually did exactly what you say
>on
>  Gamma's window frames. I used paint
>and glass with fine
>  wet sand paper. I would
>guess the SS ring was much harder
>  than the
>516-70 I have.
>  Hank
>
>--------------------------------------------
>  On Fri, 3/6/15, Stephen Fordyce via
>  Personal_Submersibles <personal_submersibles at psubs.org>
>  wrote:
>  
> 
>Subject: Re:
>  [PSUBS-MAILIST] Gamma ring
>machining
>  To:
>
>"Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>  Received: Friday, March 6, 2015, 4:06 PM
>  
>  Hi Hank,
>  
>  
>  We used
>a flame facing machine recently at
>  work to
>do a
>  stainless steel flange on a
>  pressure vessel about 800mm ID.
>  We hired it
>  to use
>ourselves at great expense, and the thing
> 
>weighed a couple of hundred kilos, was very
>
>solid.
>  The fitter who did the job was
>very
>  experienced
> 
>machinist (but hadn't used
>  one before)
>but could not get
>  the finish
>  very smooth - I can't find photos sorry,
>but
>  it was like regular machining grooves
>but much
>  larger - and
>  it
>looked pretty ordinary. He
>  spent several
>hours with a
>  grinder cleaning
>  it up.
>  On balance, it
>probably would have
>  been easier
>  to just flatten it manually
>
>with a grinder (but it was on a
>  live
>  liquefied natural gas plant and they don't
>like
>  sparks:) ). Wasn't critical to
>get a flat
>  face as we
> 
>were just making room for a
>  gasket in a
>slot to have more
>  
>
>compression.
>  After getting it pretty
>flat
>  with a straight
> 
>edge, the fine
>  stuff/quality control could
>be done by a thin
>  layer of paint on a
>known flat plate or
>  machined flange
>  which you put on the welded
>
>flange and then where there is
>  no
>paint
>  deposited, you know that area is too
>low. Obviously
>  paint is no good, but
>colored oil or 2-layered
>  carbon paper
>  (nice because then you have a
>  trace of it) would probably
> 
>work, or
>  charcoal.
> 
>Cheers,
>  
>  Steve
>  On 06/03/2015 11:40
>  PM,
>  "hank pronk via
>
>Personal_Submersibles" <personal_submersibles at psubs.org>
>  wrote:
>  Brian,
>  
>  No, the machine is
>connected
>  to the inside lip of the
>  ring.  The
>  machine rotates
>on a center pivot.  The cutter
>  rotates
>instead of the part.
>  
>  
>  Hank
>  
>
>
>
>--------------------------------------------
>  
>  On Thu, 3/5/15, Brian
>Cox
>  via Personal_Submersibles <personal_submersibles at psubs.org>
>  wrote:
>  
>  
>  
> 
> Subject: Re:
>  [PSUBS-MAILIST] Gamma ring
>machining
>  
>   To:
>"Personal Submersibles General
>
>Discussion"
>  <personal_submersibles at psubs.org>
>  
>   Received: Thursday,
>March
>  5, 2015, 9:15 PM
> 
>
>  
>  
> 
> Hank,  are you going to
>  be
>  
>   turning the whole
>  fricking sub ?
>  
>  
>  
> 
> Brian
>  
>  
>  
>   --- personal_submersibles at psubs.org
>  
>   wrote:
>  
>  
>  
>  
>  
>   From:
>hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
>  
>   To: personal_submersibles at psubs.org
>  
>   Subject:
>[PSUBS-MAILIST]
>  Gamma ring machining
>  
>  
>   Date:
>Thu, 5 Mar 2015 18:00:24 -0800
>  
>  
>  
> 
> Today my
>  welder came to my shop and
>welded the
>  
>  reinforcing
>  
>   ring into
>  Gamma, 10 passes, looks perfect!
>  
>  
>  
>   Next
>  step, machine the
>ring.  I am going to make a
>  
>   flange facing machine from
>  a one ton  truck full
>  
>  
>   floater differential hub
>and a part or two borrowed
>  from
>  my
>  
>  
>   spare lathe.  The rig will be hydraulic
>drive. 
>  
>   This may
>or may not
>  work.  :-)  If it works and
>I
>  
>   am confident it
>will, I can also face CT
>  lands, with the
>  CT
>  
> 
> welded in place.
>  
> 
> Hank
>  
>  
>
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