[PSUBS-MAILIST] 3D Printer plans for CO2 Scrubber

Tue Apr 7 15:10:04 EDT 2015

a.erikse at gmail.com

-André
7. apr. 2015 21:02 skrev "Alec Smyth via Personal_Submersibles" <
personal_submersibles at psubs.org>:

> Done. Anyone else, please let me know your emails and I'll forward off
> list.
>
> Best,
>
> Alec
>
> On Tue, Apr 7, 2015 at 2:22 PM, via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Alec,
>>
>> I did not get any attachments with this thread.  Could you maybe send
>> them direct to bobtravis at comcast.net?  I would really appreciate it!!
>> And I too would be happy to make extras or anything else I can do to help
>> the group.  I rarely comment or ask questions but I read every email that
>> comes through!  This site has been a HUGE help and, if the stars continue
>> to shine on me, I will be testing my K boat this year!!
>>
>> Bob
>>
>> ------------------------------
>> *From: *"Alec Smyth via Personal_Submersibles" <
>> personal_submersibles at psubs.org>
>> *To: *"Personal Submersibles General Discussion" <
>> personal_submersibles at psubs.org>
>> *Sent: *Tuesday, April 7, 2015 8:52:42 AM
>> *Subject: *Re: [PSUBS-MAILIST] 3D Printer plans for CO2 Scrubber
>>
>>
>> Guys, did this come through for you with the attachments?
>>
>> Thanks,
>>
>> Alec
>>
>> On Mon, Apr 6, 2015 at 11:34 PM, Alec Smyth <alecsmyth at gmail.com> wrote:
>>
>>> OK, I'm not sure what our attachment limit is, but if it works there
>>> should be eight stl files attached.
>>>
>>> The scrubber consists of two cylinders, with the space between them
>>> filled with Sofnolime. There is a blind "fixed end" that caps both
>>> cylinders, and a "removable end" that serves as a lid to the space between
>>> the cylinders. This removable end is held tight against the scrubber agent
>>> in tension by two bungee cords. It is thick, so that as the scrubber agent
>>> settles the removable end can move into the cylindrical space keeping up
>>> the pressure and preventing the formation of air paths. Because thermal
>>> contraction makes thick parts challenging to print, there are two files (A
>>> and B) for the removable end. Print them separately, bolt them together.
>>>
>>> The non-printable parts are:
>>>
>>> - Two cylinders made of perforated brass sheet. The material for those
>>> is McMaster item #9360T15. Roll the perforated sheet by hand into two
>>> cylinders of 1 7/8" and 5 1/4" diameters. I rolled the cylinders with about
>>> 1/2" overlap and put small pop rivets in the overlap to make a seam. Do
>>> this AFTER printing, so you can use the printed parts as diameter
>>> references. Vary the cylinder length as desired to increase or decrease
>>> Sofnolime capacity. Mine are 12" long.
>>> - The backup breathing hose is "Bilgeflex" white corrugated bilge pump
>>> hose from West Marine.
>>> - A SCUBA 2nd stage rubber mouthpiece.
>>> - The white external bars parallel to the cylinders and holding them
>>> together are fiberglass structural rods, McMaster part #8543K53
>>> <http://www.mcmaster.com/#8543K53>, drilled and with 1/4" SS threaded
>>> rod inside.
>>> - The fan is a Delta Electronics BFB0712H, obtainable from Digikey as
>>> item #603-1118-ND.
>>> - The rest is just a little bungee cord and a couple of tiny SS screws
>>> that go through the external and internal stiffeners to hold the outside
>>> cylinder to them.
>>>
>>> For details please refer to the photos on
>>> http://www.psubs.org/projects/1234567810/printedscrubber/
>>>
>>> Permission is hereby granted to all PSUBS members to use this design
>>> with the caveat that it is experimental and untested kit, and in the hope
>>> all who use it will also endeavor to improve the design. This is intended
>>> to be "open source".
>>>
>>>
>>> Best,
>>>
>>> Alec
>>>
>>> On Mon, Apr 6, 2015 at 3:51 PM, Bob Travis via Personal_Submersibles <
>>> personal_submersibles at psubs.org> wrote:
>>>
>>>> Would it be possible to get the stl file?  I just found out that I have
>>>> access to a 3D printer as well
>>>>
>>>> Sent from my iPhone
>>>>
>>>> > On Apr 4, 2015, at 7:10 AM, Gregory Snyder via Personal_Submersibles <
>>>> personal_submersibles at psubs.org> wrote:
>>>> >
>>>> > Alec,
>>>> > For the record, you are awesome.
>>>> >
>>>> >> On Apr 4, 2015, at 9:00 AM, via Personal_Submersibles <
>>>> personal_submersibles at psubs.org> wrote:
>>>> >>
>>>> >> Hi Alec,
>>>> >>
>>>> >> Thanks for sharing.  Perfect design for our sub.  Are the part and
>>>> STL files available to share?
>>>> >>
>>>> >> Mark...
>>>> >>
>>>> >> ---- Alec Smyth via Personal_Submersibles <
>>>> personal_submersibles at psubs.org> wrote:
>>>> >>> Hi Mark,
>>>> >>>
>>>> >>> See http://www.psubs.org/projects/1234567810/printedscrubber/
>>>> >>>
>>>> >>> Jon, perhaps we can make this open source by putting the files out
>>>> on the
>>>> >>> website somewhere?
>>>> >>>
>>>> >>>
>>>> >>> Thanks,
>>>> >>>
>>>> >>> Alec
>>>> >>>
>>>> >>> On Fri, Apr 3, 2015 at 8:49 PM, via Personal_Submersibles <
>>>> >>> personal_submersibles at psubs.org> wrote:
>>>> >>>
>>>> >>>> Hello Psubs group,
>>>> >>>>
>>>> >>>> Has anyone built a CO2 scrubber using a 3D printer that would be
>>>> willing
>>>> >>>> to share your plans and the STL files?  In return, I would be glad
>>>> to build
>>>> >>>> the plastics parts for anyone in the group.  Our 3D printer is
>>>> capable of
>>>> >>>> 12" x 12" x 12".
>>>> >>>>
>>>> >>>> Thanks,
>>>> >>>>
>>>> >>>> Mark...
>>>> >>>> 910-638-5229
>>>> >>>> _______________________________________________
>>>> >>>> Personal_Submersibles mailing list
>>>> >>>> Personal_Submersibles at psubs.org
>>>> >>>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
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>>>> >
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>>>
>>>
>>
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