[SGVHAK] 08/15 (Thu) meeting recap: ice cream abounds

[John Kim]

Hey John,

Congrats to your friend; they have more funds than they possibly need :-P. 

I assume you're saying that using free parts makes your build more expensive. Doesn't that seem ironic? 

John Kim
Student/FOSS Enthusiast
www.internet-in-a-box.org
thinkndev at gmail.com



On Aug 17, 2013, at 10:47 PM, Tux Lab <project.tuxlab at gmail.com> wrote:

> 
> The link to my friend's kickstart is,
> 
> http://www.kickstarter.com/projects/blueeaglelabs/kossel-clear-lets-build-a-full-sized-delta-3d-prin
> 
> Tux-Lab is responsible for the acrylic parts and has a minor stake in the 3d printing venture.  The printer for SGVLUG/SGVHAK is built on the same frame but pushes the "Free as in Freedom" ideology by minimize parts from non-free countries.   By substituting parts, ie steppers, bearing and etc,  I think I've already exceeded their kickstarter price by 100%.   If I can somehow figure out how to generate gerber files for the electronics, I will build a few more printers
> 
> . 
> John
> 
> 
> 
> On Fri, Aug 16, 2013 at 1:41 AM, Lan Dang <l.dang at ymail.com> wrote:
> > Hi all,
> >
> > Before I get to the recap, three items.
> >
> > 1) There is a Repair Cafe event this Saturday (Aug 17th) from 6-9pm at
> > Arroyo Food Co-op store (494 N. Wilson @Villa in Pasadena). I am not clear
> > if one must RSVP on Meetup in order to attend. I don't think I will be
> > there long, but I promised to bring ice cream. I rather feel like making
> > Nutella ice cream. 
> >
> > http://www.meetup.com/Repair-Cafe-Pasadena/events/126348712/
> >
> > 2) The next HAK meeting is Saturday, August 24th, from 2-6pm at Hastings
> > Branch Library (3325 East Orange Grove Boulevard Pasadena, CA 91107). I
> > will send out another reminder closer to the date. Let me know if you're
> > planning any kind of show and tell or workathon so I can publicize it. 
> >
> > 3) In the future, let's start the Thursday meetings at 6:30pm. That will
> > give Dave enough time to finish his work before we descend on him. Most of
> > us can't get there till around that time anyway.
> >
> >
> > RECAP:
> >
> > As usual, it was a fun HAK meeting. We had a larger than normal turnout
> > since we had folks who hadn't come to Dave's shop (or any HAK meeting)
> > before as well as folks we hadn't seen in months.
> > 
> > I think we hit a peak of 15 people at the shop, of which 10 stayed to the
> > end and came to dinner. Carmine's on Live Oak seems to be our place now,
> > and the wait staff has noticed our regular attendance.
> >
> > There was a lot of activity. Dave was still working on something for work. 
> > Adam and John K. were working on installing packages on Dave's new Linux
> > computer. John W. had another 3D printer kit he was assembling. I don't
> > remember if he has posted a link to his friend's Kickstarter. Braddock and
> > Joel and John K. worked on Internet-in-a-Box. Mic was doing another
> > lockpicking workshop. Thanks to Homan's advice and memories of Mic's LUG
> > presentation, I was able to pick 3 or 4 locks in quick succession. I hadn't
> > realized that you *barely* want to put any tension on the lock. 
> >
> > I brought a cooler with dry ice and several different ice creams. There
> > were Klondike bars, Skinny Cow sandwiches, homemade peach ice cream, a
> > homemade mango-passion-fruit yogurt mousse. I had the beginnings of a
> > cantaloupe sorbet. 
> >
> > We did indeed make ice cream using a cryogenic bath of dry ice and vodka. 
> > The inspiration for this was the following MAKE article. 
> > http://makezine.com/2010/01/15/make-projects-15-minute-ice-cream/
> >
> > Mic had suggested using vodka instead of denatured alcohol because we didn't
> > want to worry about tainting the ice cream with something potentially toxic. 
> > I got the containers recommended in the article, which was a gallon-sized
> > beverage cooler and a bain-marie, which is basically like a stainless steel
> > beaker.
> >
> > We pulverized the dry ice with a rolling pin--great therapy for a bad day at
> > work. The guys took turns pouring it into the beverage cooler. We then
> > poured in vodka and got hit with a faceful of alcoholic fumes and a lot of
> > fog coming out of the cooler. We ultimately ended up dumping the entire
> > bottle of vodka into the cooler.
> >
> > Mic jury rigged a handle for the bain-marie using a wire hanger. This gave
> > us a safe way to lift it in and out of the dry ice/vodka.
> >
> > At first, we were unable to make a liquid bath. The top froze over, so we
> > just rested the bain-marie on a thick ice crust and got very wet cantaloupe
> > slush. Then Mic realized that the vodka was still liquid underneath the ice
> > crust, so he pounded away at the crust and broke through to the liquid at
> > the bottom of the cooler. Now we were able to freeze the sorbet. We only
> > made a small amount at a time, because we needed the cooling liquid to come
> > up to the same level as the sorbet in the bain-marie. We stirred vigorously
> > with a rubber spatula until it became too solid to stir.
> >
> > This is our jury-rigged ice cream maker in action. Notice the empty bottle
> > of vodka in the corner. We did this out in the parking lot with a nice
> > breeze.
> > http://i.imgur.com/N1c2XIJ.png
> >
> > Now the guys give me a hard time and tell me I should have been using liquid
> > nitrogen. All I can say is: you bring the liquid nitrogen, I'll provide the
> > ice cream base.
> >
> >
> > Lan
> >
> > N.B. Apparently, you can keep your dry ice from sublimating too quickly by
> > insulating it really well. The first layer of insulation is wrapping the
> > dry ice in several inches of newspaper. Fill the cooler with wadded up
> > newspaper to further insulate the cooler I am going to try using a
> > wadded-up thermal blanket since I have one wadded in a bag somewhere, never
> > having figured out how to refold the crinkly material.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sgvhak.net/pipermail/hak/attachments/20130817/b25878e8/attachment-0001.html>