Just saw this project on the Make blog, about making magnetic ink - would probably work just as well for ferrofluid:<br><br><a href="http://openmaterials.org/2012/07/02/diy-magnetic-ink/">http://openmaterials.org/2012/07/02/diy-magnetic-ink/</a><br>
<br>The page includes a link to a supplier selling magnetite powder at $16 a pound (down to $5 a pound, for a 44lb bag):<br><br><a href="http://shop.chemicalstore.com/navigation/detail.asp?id=FE3O4M1">http://shop.chemicalstore.com/navigation/detail.asp?id=FE3O4M1</a><br>
<br>I put in an order for one pound (add $9 in shipping, so $25 total - figures...)<br><br>Patrik<br><br><div class="gmail_quote">On Thu, Jul 12, 2012 at 6:14 PM, Patrik D'haeseleer <span dir="ltr"><<a href="mailto:patrikd@gmail.com" target="_blank">patrikd@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">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.<br>
<br><a href="https://www.inventables.com/technologies/magnetic-fluid" target="_blank">https://www.inventables.com/technologies/magnetic-fluid</a><br>
<br>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.<br>
<br>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.<span class="HOEnZb"><font color="#888888"><br>
<br>Patrik<br></font></span><br>PS: Doesn't quite classify as a ferro"fluid", but check out the video about this guy's work:<br><br><a href="http://jolanvanderwiel.nl/?p=272" target="_blank">http://jolanvanderwiel.nl/?p=272</a><div class="HOEnZb">
<div class="h5"><br><br>
<br><br><div class="gmail_quote">On Thu, Jul 12, 2012 at 5:32 PM, Tracy Jacobs <span dir="ltr"><<a href="mailto:kinetical@comcast.net" target="_blank">kinetical@comcast.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word"><a href="http://www.thecreatorsproject.com/blog/ferrofluids-go-next-level-technicolor-in-fabian-oefners-amazing-images" target="_blank">http://www.thecreatorsproject.com/blog/ferrofluids-go-next-level-technicolor-in-fabian-oefners-amazing-images</a><br>
<div><br><div>Begin forwarded message:</div><br><blockquote type="cite"><div><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font style="font:12.0px Helvetica" size="3" color="#000000" face="Helvetica"><b>From: </b></font><font style="font:12.0px Helvetica" size="3" face="Helvetica">Tracy Jacobs <<a href="mailto:kinetical@comcast.net" target="_blank">kinetical@comcast.net</a>></font></div>
<div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font style="font:12.0px Helvetica" size="3" color="#000000" face="Helvetica"><b>Date: </b></font><font style="font:12.0px Helvetica" size="3" face="Helvetica">July 12, 2012 5:29:10 PM PDT</font></div>
<div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font style="font:12.0px Helvetica" size="3" color="#000000" face="Helvetica"><b>To: </b></font><font style="font:12.0px Helvetica" size="3" face="Helvetica">SUDOroom list <<a href="mailto:sudoroom@lists.hackerspaces.org" target="_blank">sudoroom@lists.hackerspaces.org</a>></font></div>
<div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font style="font:12.0px Helvetica" size="3" color="#000000" face="Helvetica"><b>Subject: </b></font><font style="font:12.0px Helvetica" size="3" face="Helvetica"><b>[sudoroom] Ferro Fluids?</b></font></div>
<div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px;min-height:14px"><br></div> </div><div>Hi,<br><br>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.<br>
<br><a href="http://www.instructables.com/id/Make-your-own-ferrofluid-in-5-minutes/" target="_blank">http://www.instructables.com/id/Make-your-own-ferrofluid-in-5-minutes/</a><br><br>A nicer example:<br><br><a href="https://www.facebook.com/home.php?ref=home#%21/photo.php?fbid=503571739658618&set=a.133255743356888.23929.115384328477363&type=1&theater" target="_blank">https://www.facebook.com/home.php?ref=home#!/photo.php?fbid=503571739658618&set=a.133255743356888.23929.115384328477363&type=1&theater</a><br>
<br>Tracy<br>_______________________________________________<br>sudoroom mailing list<br><a href="mailto:sudoroom@lists.hackerspaces.org" target="_blank">sudoroom@lists.hackerspaces.org</a><br><a href="http://lists.hackerspaces.org/mailman/listinfo/sudoroom" target="_blank">http://lists.hackerspaces.org/mailman/listinfo/sudoroom</a><br>
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