[sudoroom] Fwd: Ferro Fluids Sudo Project group

Wed Jul 18 04:51:24 CEST 2012

Hm, this place seems to carry soap making supplies - worth checking if they
have oleic acid:

http://www.junipertreesupplies.com/

They're on San Pablo near Dwight.

Patrik

On Tue, Jul 17, 2012 at 7:14 PM, Patrik D'haeseleer <patrikd at gmail.com>wrote:

> Instead of moving a magnet around, I was thinking of installing a couple
> of small fixed electromagnets, and just change how much you power each of
> them. No moving parts required, except for the ferrofluid itself.
>
> With some luck, I may be getting the magnetite by tomorrow. Has anyone
> found a source for oleic acid, to add to the DIY ferrofluid as a
> surfactant? Sounds like oleic acid is used in soap making, so craft stores
> or health food stores may carry it.
>
> Patrik
>
>
> *From: *Tracy Jacobs <kinetical at comcast.net>
>> *Date: *July 17, 2012 6:07:40 PM PDT
>> *To: *"Patrik D'haeseleer" <patrikd at gmail.com>
>> *Subject: **Re: Ferro Fluids Sudo Project group*
>>
>> Worth a try!  I've been seeing stuff on youtube where they say  they are
>> changing the magnetic field on what looks like a solid hunk of metal to
>> make changes in the fluid, but apart from moving magnets around under it or
>> on it, how would that be accomplished?  And for the dish under the
>> sculpture to catch the fluid, do we want something conductive or
>> non-conductive?  I am a little confused about this, and glad you are
>> willing to help!  Let me know what other things we might need that I might
>> have around here, ok?  If you think of anything.  I don't think I have a
>> big plastic skull.  It's hard to believe that plastic and foil would work,
>> actually, I'm curious to see though.  Is anyone else planning to attend
>> this or is it just me and you Patrik?
>> Did you get your oxide shipment yet?
>> Tracy
>> On Jul 17, 2012, at 1:38 PM, Patrik D'haeseleer wrote:
>>
>> I was thinking that some non-magnetic material would make it easier to
>> manipulate the overall magnetic field using some low-powered
>> electromagnets. Hence Alu foil instead of cast iron.
>>
>> Actually, we could just start from a cheap plastic skull ($17.27 on
>> Amazon<http://www.amazon.com/Anatomical-Chart-Company-CS20-Life-Size/dp/B000VKSDYE>,
>> or dig through your Halloween closet), and implant some magnets to get the
>> ferrofluid to stick.
>>
>> Patrik
>>
>>
>> On Tue, Jul 17, 2012 at 9:24 AM, Tracy Jacobs <kinetical at comcast.net>wrote:
>>
>>> Patrick,
>>>
>>> I love your idea !  Cast iron would be better than foil to be sure.
>>>  Maybe greenman would be a fitting subject.
>>>
>>> I'm ok with Wed or Fri, maybe Friday if I have to run around and get
>>> supplies too.
>>>
>>> Tracy
>>>
>>> On Jul 17, 2012, at 1:12 AM, Patrik D'haeseleer wrote:
>>>
>>> I could do Wednesday or Friday - prefer Wednesday. I can bring my small
>>> sample of cemmercial ferrofluid for comparison with the DIY versions.
>>>
>>> Does anyone have access to oleic acid to use as a surfactant? That
>>> should keep the ferrite particles from clumping together, and make for a
>>> much smoother ferrofluid. Supposed to be around 5% magnetite (3-15% by
>>> volume), 10% surfactant (6-30%), and 85% oil (55-91%).
>>>
>>> Someone on Instructables mentioned you can also get ferrite at a pottery
>>> supply store for $2-$5 a pound. Know anyone into pottery? Anyone want to
>>> check out Leslie Ceramic Supply, 1212 San Pablo in Berkeley, just North of
>>> Gilman?
>>>
>>> In terms of art pieces, I think it would be really cool to do an
>>> animated sculpture covered in ferrofluid, with electromagnets hidden inside
>>> so you can change the texture of the ferrofluid. The simplest version could
>>> just be a face molded out of aluminum foil, with small magnets embedded to
>>> get the ferrofluid to cover the surface. Then put some electromagnets
>>> behind the face, so you can change its expression by manipulating the
>>> ferrofluid.
>>>
>>> Patrik
>>>
>>> On Mon, Jul 16, 2012 at 10:11 PM, Tracy Jacobs <kinetical at comcast.net>wrote:
>>>
>>>> Hi All,
>>>>
>>>> Thanks for expressing interest in doing a Ferrofluid experiment
>>>> together.  I'd love to make our project the centerpiece of our Art Murmur
>>>> show.  Art Murmur is in two weeks.  I asked Jake to share his experiment
>>>> during Art Murmur.  He made his in like a day, and it turned out really
>>>> well.  He mixed MICR with cooking oil and put it between two slides with a
>>>> magnetized paper clip.  That was projected on a wall for a really
>>>> interesting painterly effect.  Very small scale and inexpensive, too.
>>>>
>>>> So, we need Ferrofluid.   I know Patrick ordered some iron oxide, and
>>>> he has sent us some good links.  There are different methods we can try for
>>>> making the fluid ourselves, because it can be expensive to buy.  I want to
>>>> try a couple different recipes.  Patrick can you get back to me with your
>>>> reccomendations for what we should try and what we still need to buy for
>>>> that?
>>>>
>>>> I am interested in magnetizing a couple of iron sculptures that I made
>>>> a long time ago.  From what I understand this involves wrapping them in
>>>> coated copper wire and charging them.  If you find any interesting steel or
>>>> iron objects, these would be good to play with.
>>>>
>>>> We also need magnets.  Powerful magnets can be taken from old hard
>>>> drives, so if you have any old hard drives bring them.  I will bring tools.
>>>> Or if you have any magnets, bring those.
>>>>
>>>> We should meet up soon.  Could you let me know your availability?   I
>>>> have Weds night, Fri night, or the weekend anytime.
>>>>
>>>> Tracy
>>>>
>>>> www.funkyautomata.com
>>>>
>>>>
>>>> On Jul 16, 2012, at 12:36 PM, Jehan Tremback wrote:
>>>>
>>>> Wow, imagine making a batch with a 44 lb bag, using a gigantic
>>>> electromagnet, and creating the hugest ferrofluid sculpture known to man.
>>>> Might be messy if the power cut out though.
>>>>
>>>> -Jehan
>>>>
>>>> On Mon, Jul 16, 2012 at 9:12 AM, Anca | Tech Liminal <
>>>> anca at techliminal.com> wrote:
>>>>
>>>>> The rust lady said she got all her supplies at Michael's - but that
>>>>> they weren't well-labeled.  Look in the patina isle (yes, there is a patina
>>>>> isle!)
>>>>>
>>>>> Anca.
>>>>>
>>>>>  -=-=-=-=-
>>>>> *Anca Mosoiu  | Tech Liminal*
>>>>> anca at techliminal.com
>>>>> M: (510) 220-6660
>>>>> W: http://techliminal.com  | T: @techliminal | F:
>>>>> facebook.com/techliminal
>>>>>
>>>>> On Jul 12, 2012, at 6:14 PM, Patrik D'haeseleer wrote:
>>>>>
>>>>> I got some ferrofluid from Inventables a while back - wasn't too
>>>>> expensive: $13.60 for a fluid ounce. Haven't tried mixing it with any water
>>>>> colors yet though.
>>>>>
>>>>> https://www.inventables.com/technologies/magnetic-fluid
>>>>>
>>>>> I also noticed that the person teaching the "Create Real Rust" class
>>>>> at Workshop Weekend had a jar of atomized iron powder that I was thinking
>>>>> would probably work fairly well to make ferrofluid. May be worth checking
>>>>> some art stores with a magnet - or just ask that teacher where she got hers.
>>>>>
>>>>> I think the Exploratorium or another similar booth had a nice
>>>>> ferrofluid demo at Maker Faire one or two years ago. Just a big glob of
>>>>> ferrofluid in a glass jar, and some powerful magnets that people could move
>>>>> by turning a wheel.
>>>>>
>>>>> Patrik
>>>>>
>>>>> PS: Doesn't quite classify as a ferro"fluid", but check out the video
>>>>> about this guy's work:
>>>>>
>>>>> http://jolanvanderwiel.nl/?p=272
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Jul 12, 2012 at 5:32 PM, Tracy Jacobs <kinetical at comcast.net>wrote:
>>>>>
>>>>>>
>>>>>> http://www.thecreatorsproject.com/blog/ferrofluids-go-next-level-technicolor-in-fabian-oefners-amazing-images
>>>>>>
>>>>>> Begin forwarded message:
>>>>>>
>>>>>> *From: *Tracy Jacobs <kinetical at comcast.net>
>>>>>> *Date: *July 12, 2012 5:29:10 PM PDT
>>>>>> *To: *SUDOroom list <sudoroom at lists.hackerspaces.org>
>>>>>> *Subject: **[sudoroom] Ferro Fluids?*
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I was wondering if anyone would be interested in doing some
>>>>>> experimentation with Ferro fluids as a group project?  If we get nice
>>>>>> results we could put them in the box office next Art Murmur.  I've been
>>>>>> wanting to try that for a long time, and there are some methods that are
>>>>>> free or under ten dollars cheap.
>>>>>>
>>>>>> http://www.instructables.com/id/Make-your-own-ferrofluid-in-5-minutes/
>>>>>>
>>>>>> A nicer example:
>>>>>>
>>>>>>
>>>>>> https://www.facebook.com/home.php?ref=home#!/photo.php?fbid=503571739658618&set=a.133255743356888.23929.115384328477363&type=1&theater
>>>>>>
>>>>>> Tracy
>>>>>> _______________________________________________
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>>>>>>
>>>>>>
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>>>>>>
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