[PSUBS-MAILIST] machining q ball

[James Frankland via Personal_Submersibles]

Hi Hank,

Im very interested to see how your manipulator works out.  Im sure others
will be too.  Can you take some pics as you go along, so we can see how its
coming along.

Kind Regards
James



On 18 October 2014 21:35, Jim Rudholm via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> You're welcome, glad it worked out ok...
> JimR
>
> On Sat, Oct 18, 2014 at 11:25 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>>
>> Hi Jim R
>> I just machined another q ball and it worked perfect with your tricks.
>> thanks'
>> Hank--------------------------------------------
>> On Fri, 10/17/14, Jim Rudholm via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>  Subject: Re: [PSUBS-MAILIST] machining q ball
>>  To: "Personal Submersibles General Discussion" <
>> personal_submersibles at psubs.org>
>>  Received: Friday, October 17, 2014, 6:15 PM
>>
>>  I use
>>  billard balls for handles on my lathe fixtures. Try a PVC
>>  water pipe cap mounted in the 3-jaw and machine the inside
>>  for a snug fit. Then tighten a little more. Also add coolant
>>  and dress down the drill's cutting edges with a hand
>>  diamond hone to a very narrow flat. This gives more of a
>>  scraping action, works for brass and bronze, too. For
>>  handles, its a blind hole for a 1/2-13
>>  thread.JimR
>>  On Fri, Oct 17, 2014 at
>>  3:00 PM, hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>>  wrote:
>>  Thanks
>>  guys
>>
>>  Emile,
>>
>>  I think the hard resin q ball is what Gamma had when it was
>>  built.
>>
>>  Vance,
>>
>>  That is great, I am thinking the q ball twisted in the jaws
>>  causing the drill to bind.  I can make a fixture to hold
>>  the ball tight without damaging it, while it is in the
>>  lathe.
>>
>>  Hank
>>
>>  --------------------------------------------
>>
>>  On Fri, 10/17/14, via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>>  wrote:
>>
>>
>>
>>   Subject: Re: [PSUBS-MAILIST] machining q ball
>>
>>   To: personal_submersibles at psubs.org
>>
>>   Received: Friday, October 17, 2014, 5:44 PM
>>
>>
>>
>>   Hank,
>>
>>   I've sent along some questions to the
>>
>>   horse's mouth. Haven't heard from him in months,
>>  but
>>
>>   I'm hoping he will get back to us shortly.
>>
>>
>>
>>   Vance
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>   -----Original
>>
>>   Message-----
>>
>>
>>
>>   From: hank pronk via Personal_Submersibles
>>
>>   <personal_submersibles at psubs.org>
>>
>>
>>
>>   To: personal_submersibles
>>
>>   <personal_submersibles at psubs.org>
>>
>>
>>
>>   Sent: Fri, Oct 17, 2014 4:37 pm
>>
>>
>>
>>   Subject: [PSUBS-MAILIST] machining q ball
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>>
>>
>>
>>
>>
>>
>>   help!
>>
>>   I tried to machine a q ball today as an experiment
>>  before
>>
>>   the proper one
>>
>>   arrives.  I put tape around it and put it in a 3 jaw
>>  chuck
>>
>>   and while drilling
>>
>>   the hole through it cracked.  Do I need to make a fixture
>>  to
>>
>>   hold the q ball
>>
>>   steady maybe?  I made a home made o-ring groove cutter
>>  and
>>
>>   that worked perfect.
>>
>>   The q ball is very brittle, but machines very nice.
>>  Any
>>
>>   ideas would be
>>
>>   appreciated.
>>
>>   Hank
>>
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