[Ground-station] Mechanical prototyping resources available - please add if you are willing and able

Tue Sep 22 11:16:02 PDT 2020

Thank you - very much looking forward to seeing them.

-Michelle W5NYV

On Tue, Sep 22, 2020 at 11:12 AM Bruce Perens <bruce at perens.com> wrote:

> I'm going to visit the big one in the warehouse and take some photos.
>
> On Tue, Sep 22, 2020, 11:09 AM Michelle Thompson <
> mountain.michelle at gmail.com> wrote:
>
>> Let's talk a bit more about this.
>>
>> It's in Berkeley, CA, and you have two of them.
>>
>> Could you describe what's involved? We can post a PDF with the model
>> number.
>>
>> -Michelle W5NYV
>>
>>
>>
>>
>> On Tue, Aug 4, 2020 at 7:20 PM Bruce Perens <bruce at perens.com> wrote:
>>
>>> I have two Lindgren RF anechoic chambers with power filters and I think
>>> a USB filter dating back to the original slow USB. The larger one is about
>>> the size of the pallet it's on, square, and crushed the plastic pallet with
>>> its weight. I would contribute that one to the project if we can find a
>>> place where it would be accessible, and can truck it from Berkeley
>>> Warehouse. There is a forklift at the warehouse to put it on a truck, it's
>>> definitely going to need one to take it off.
>>>
>>> Thanks
>>>
>>> Bruce
>>>
>>> On Tue, Aug 4, 2020, 6:53 PM Michelle Thompson via Ground-Station
>>> <ground-station at lists.openresearch.institute> wrote:
>>>
>>>> Resources are caught up. Teams are next.
>>>>
>>>> -Michelle W5NYV
>>>>
>>>>
>>>>
>>>>
>>>> On Tue, Aug 4, 2020 at 9:02 AM Michelle Thompson <
>>>> mountain.michelle at gmail.com> wrote:
>>>>
>>>>> Thanks Keith,
>>>>>
>>>>> Working on a staff and resources repository today.
>>>>>
>>>>> -Michelle W5NYV
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Tue, Aug 4, 2020 at 8:06 AM Keith Wheeler <
>>>>> keith.m.wheeler at gmail.com> wrote:
>>>>>
>>>>>> In PDX I have access to:
>>>>>>   Creality Ender 3d printer
>>>>>>   K40 (small) 40W CO2 laser
>>>>>>   Small engraving machine
>>>>>>   Small sheet metal brake
>>>>>>   Hydraulic hand terminal crimper 10 through 0/1 gauge
>>>>>> Additionally I own but do not currently have access to:
>>>>>>    Large Smithy 3in1 mill/drill/lathe
>>>>>>    Metal bandsaw
>>>>>>    Metal chopsaw
>>>>>>    Lincoln MIG welder
>>>>>>    20 ton hydraulic press
>>>>>>    Hydraulic tubing bender
>>>>>>    Sheet metal bead roller
>>>>>>    Throatless shear
>>>>>>    Numerous rivet, nutcert, cleco, etc tools
>>>>>>    Numerous hand fabrication tools: flangers, tubing flare formers,
>>>>>> etc
>>>>>>    Numerous taps, dies, end mills, ball mills, specialty bits
>>>>>>    Router table
>>>>>>    Air compressor
>>>>>>    Sandblast cabinet
>>>>>>    Various paint guns
>>>>>>    Vacuum pump
>>>>>>    Composite and casting support equipment
>>>>>>    Parkerizing solution/equipment
>>>>>>    Small reflow oven
>>>>>>    Small solder paste stencil station
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Mon, Aug 3, 2020 at 9:35 PM Michelle Thompson via Ground-Station
>>>>>> <ground-station at lists.openresearch.institute> wrote:
>>>>>>
>>>>>>> Greetings all!
>>>>>>>
>>>>>>> This thread is primarily for Scott McGillivray (and other
>>>>>>> mechanically-inclined volunteers).
>>>>>>>
>>>>>>> We will be doing more mechanical design going forward. There are
>>>>>>> resources available for prototyping. This report outlines some of them.
>>>>>>>
>>>>>>> Video report here:
>>>>>>> https://youtu.be/2omYVVKAnhs
>>>>>>>
>>>>>>> Transcript:
>>>>>>> Here's a walk through of our mechanical fabrication capabilities in
>>>>>>> San Diego. If you have shop capabilities that you can offer for the Phase 4
>>>>>>> project, then please file either an issue or a pull request (or write me)
>>>>>>> and let's add to the list below!
>>>>>>>
>>>>>>> Link to document in GitHub is:
>>>>>>> https://github.com/phase4ground/documents/blob/master/Management/Weekly_Engineering_Reports/20200803_Phase4_weekly_report.txt
>>>>>>>
>>>>>>> 1) Voltera V-one circuit printer.
>>>>>>> https://www.voltera.io/product/specs
>>>>>>>
>>>>>>> This can handle ordinary PCB material up to 3mm thick but can also
>>>>>>> do flexible circuits on material like Kapton.
>>>>>>>
>>>>>>> 0.2mm minimum trace width, 0402 minimum passive size, and 128mm by
>>>>>>> 116mm print area.
>>>>>>>
>>>>>>> It can print, cure, and solder. It can also drill but I do not have
>>>>>>> that attachment.
>>>>>>>
>>>>>>> 2) Ultimaker 2 that has been upgraded to a 2+. We have done several
>>>>>>> microwave feeds and antenna designs including elliptical taper 10GHz horns,
>>>>>>> dual band feeds, helical structures, and more.
>>>>>>>
>>>>>>> We metallize using conductive paint and the results have been very
>>>>>>> good.
>>>>>>>
>>>>>>> Resolution of this printer setup is 0.02mm, which is good enough for
>>>>>>> 120GHz multi-reflector systems and beyond.
>>>>>>>
>>>>>>> 3) Wood shop with metal brake, grinding wheel, and drill press.
>>>>>>>
>>>>>>> 4) For textiles and embroidery, we have a Pfaff creative vision with
>>>>>>> embroidery deck and all the hoops. We also have a serger.
>>>>>>>
>>>>>>> 5) Multi-purpose machine, air compressors, and a 1929 South Bend
>>>>>>> Lathe.
>>>>>>>
>>>>>>> 6) This Tormach PCNC 440 is a small, light duty 3-axis CNC milling
>>>>>>> machine capable of working to accuracies of about a thousandth of an inch
>>>>>>> (a couple hundredths of a millimeter) within a work envelope of about 6 by
>>>>>>> 10 inches (150 by 250 millimeters). We have a reasonably complete set of
>>>>>>> ordinary tooling and work holding accessories for it. We are certainly not
>>>>>>> expert machinists, but with these tools we can make prototype runs of a
>>>>>>> wide variety of parts in materials like plastic, aluminum, and steel. Not
>>>>>>> every shape is easy or even possible to make with a 3-axis mill, but for
>>>>>>> most designs we can make a part that will work.
>>>>>>>
>>>>>>> 7) We have access to the large laser cutter at colab.org. Use of
>>>>>>> the machine is free for non-commercial work.
>>>>>>>
>>>>>>> As we enter into a stage where we will be doing more mechanical
>>>>>>> design, these are the resources that are immediately available for early
>>>>>>> prototypes.
>>>>>>>
>>>>>>> Thanks everyone!
>>>>>>>
>>>>>>> More soon,
>>>>>>>
>>>>>>> -Michelle W5NYV
>>>>>>>
>>>>>>
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