[sshc-fig] 1/13 notes

Wed Jan 17 04:48:32 UTC 2018

Id say wait on any plans for certification until more of us are experienced.  Speaking of experience,i think it would be a good idea  to cast some basic stock shapes like a rectangular aluminum plate for the next pour so we can get a feel for dimensional control and making molds. Thoughts? 

~Oliver

Sent from my iPhone

> On Jan 14, 2018, at 4:30 PM, Mike Gerges <gerges.michael at gmail.com> wrote:
> 
> I imagine with as much time/effort goes in to getting the foundry up and running it make the most sense to do multiple pours at once. I imagine if anyone announces they're doing one people would be happy to join. I saw a design once for an electric foundry as well...that might be worth researching at some point
> 
> 
>> On Sun, Jan 14, 2018, 4:27 PM Brady Huddleston <gungthar at gmail.com> wrote:
>> I think it would be great for people to be able to pour on their own. My concern is how incredibly dangerous the foundry is, and how easily it can maime people/our building. I think after another demonstration pour, it would be a good idea to go over all the safety concerns, and make them part of the certification process. Beyond that, a pyrometer would be lovely.
>> 
>> We should also make it a point to bring a fire extinguisher next time.
>> 
>>> On Sun, Jan 14, 2018 at 16:16 Mike Gerges <gerges.michael at gmail.com> wrote:
>>> Funny you mention the laminated sheets, Dmitry and I are working on just that.  A "certification binder" if you will (even if you won't, we're still doing it)
>>> 
>>> 
>>>> On Sun, Jan 14, 2018, 4:15 PM X tX <trnqfl at gmail.com> wrote:
>>>> Thoughts!
>>>> - It would be great to have a laminated sheet (to do dry-erase safety checks on) for this and other tools with very dangerous/surprising energy sources.
>>>> - A simple "you must have a buddy" decree should be made and may clean up a need for multiple role certifications.
>>>> 
>>>> With those two guards in place, anyone certified should be understanding and safe with it and have some idea of the variety of failure modes to watch out for ("make sure you have an extinguisher and at least X gal of water at hand, make sure you're not pouring near concrete..").
>>>> 
>>>> R
>>>> 
>>>>> On Sun, Jan 14, 2018 at 3:57 PM, Allan LeSage <allanlesage at gmail.com> wrote:
>>>>> Hiya,
>>>>> 
>>>>> More notes!
>>>>> 
>>>>> We'd like not to bring the foundry inside while it's still hot; after two hours (and a li'l nap) the interior was still hot to the touch.  Discussed briefly with Phil who very graciously agreed to put the foundry in its cubby later in the evening.  Phil suggested that the foundry would be safe to store inside at 100 degrees, we talked about obtaining a pyrometer to test--Phil offered to bring this up at the weekly sshc meeting.
>>>>> 
>>>>> We accidentally burned through the bottom of that black tub, the plastic melted.  It cost $5 at Home Despot so not a big deal--I don't think the metal went through obviously but the sand was maybe too thin.  Also the second tub which contained the lid warped a bit.  More sand, maybe larger bins.
>>>>> 
>>>>> Yes to some sort of official ruleset, or something toward a certification workflow.  I think there are two roles: the melter/pourer and the person responsible for the foundry, what do you think?  We can do more than one pour in a day, maybe it takes a number of pours to become eligible to operate the foundry, which has the benefit of being able to operate alone, lead a new group, etc.  What do you think, Brady?
>>>>> 
>>>>> Yes to doing this again, maybe in two weeks?
>>>>> 
>>>>> Let's do a sand casting next time, I have in mind to do this http://www.backyardmetalcasting.com/alumflasks01.html .
>>>>> 
>>>>> Sand casting is kind-of messy and requires water; if the space is crowded like last Saturday then there's really not enough room.  Do we have a portable folding table or some such?  If so we could move to the hall close to the loading dock.  IMO that's kind-of better, even, because it's easier to clean up an empty space.  I think we can recondition the sand with water in a bathroom, e.g. that weird spraybooth on the first floor?
>>>>> 
>>>>> Andrew I accidentally stole your shiv/multi-tool, will return to you ASAP.
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>>> On Sat, Jan 13, 2018 at 10:41 PM, Brady Huddleston <gungthar at gmail.com> wrote:
>>>>>> We should work on some sort of offical ruleset as to how to pour. At some point, it might be nice to have members organizing their pours through a certification line.
>>>>>> 
>>>>>>> On Sat, Jan 13, 2018 at 22:28 Mike Gerges <gerges.michael at gmail.com> wrote:
>>>>>>> What I saw was awesome, I'll definitely dress better for the weather next time...we should do a next time... Or even practice making some sand molds or something
>>>>>>> 
>>>>>>> 
>>>>>>>> On Sat, Jan 13, 2018, 3:28 PM ulrich00 <ulrich00 at gmail.com> wrote:
>>>>>>>> I would like to note that I missed it and I'm sad :<
>>>>>>>> 
>>>>>>>>> On Sat, Jan 13, 2018 at 2:57 PM, Allan LeSage <allanlesage at gmail.com> wrote:
>>>>>>>>> Any comments or notes or whatever?
>>>>>>>>> 
>>>>>>>>> Here's the blog post I was looking for concerning the propane PSI at the burner: https://gordsgarage.wordpress.com/tag/homemade-foundry/ .
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> _______________________________________________
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>>>>> 
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