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Kitten  
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 More options Nov 17 2012, 12:36 pm
From: Kitten <skel...@gmail.com>
Date: Sat, 17 Nov 2012 09:36:40 -0800 (PST)
Local: Sat, Nov 17 2012 12:36 pm
Subject: Safety Last

I just wanted to make people aware of potential safety concerns surrounding
the new and old equipment.  I have been told that this is of low concern as
it will be unlikely to make people join the group, but I'd rather bring
this to everyone's attention.

Eye wash station - Now that we have metal working as well as our normal
wood working equipment and the general plethora of chemicals. I believe
it's time we acquire an actual eye/face wash station and plumb it in within
10 seconds of the shop area, it's all too easy to get a chip or chemicals
in the eyes while working.

E-Stop for lathe, mill, and mini lathe - I consider this to be a very
urgent thing, it should not cost a fortune but the brass tacks of it is we
would basically need:
E-Stops: ebay item# 370497654259 - Ideally you'd want 2 E-Stops per machine
wired NC in series so if any is hit it disconnects power.
30A Contactor: ebay item# 181023963807 - This is intended to interrupt the
flow of electricity if any of the e-stops are hit.
Reset button: ebay item# 350040793332 - Push to reset the trip condition
Line indicators: ebay item# 320855093218 - We should have 2 to indicate the
presence of power on each of the hot lines
Terminal Strip: ebay item# 160740368985 - This is required to wire the
e-stops to the contactor
Enclosure: ebay item# 321015671629 - This is to house the contactor,
indicator, push to reset button.
SOOW Cable: 14awg SOOW or similar cable to run to the e-stop boxes.
14AWG THHN: 2 colors of thhn for contactor wiring.
THHN Wire: Appropriate size THHN to run from contactor to boxes and or
machines.

Respirator with acid gas filters: Respirator for pcb etching, the solution
fumes acid as well as atomized acid from the agitation.
Long Nytrile Gloves: Gloves to provide protection from the acid.
Nytrile Apron: Apron to provide splash protection.
Chemical Splash Goggles: Provides splash protection from acid an various
chemicals around the shop.

While this may seem like an unreasonable cost at this time, safety
equipment really pays off when needed. I do feel that we really need
E-Stops for the two lathes, and mill.  These tools are quite dangerous and
mistakes do happen, E-Stops are designed in a way that any limb can
activate them and cut power unlike switches an such that require some
dexterity to operate. I personally believe that we will acquire a higher
caliber of member if we show that there has been an effort to make our
space as safe as possible.


 
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Joe Ferguson  
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 More options Nov 17 2012, 1:11 pm
From: Joe Ferguson <hal...@gmail.com>
Date: Sat, 17 Nov 2012 12:10:50 -0600
Local: Sat, Nov 17 2012 1:10 pm
Subject: Re: [MidsouthMakers] Safety Last

Great concerns, looks to be good ideas for possible solutions. The effort
so far is greatly appreciated. You / Someone should categorize the stuff we
need (Chemical Safety, Lathe Safety, Mill Safety, etc) and add up the cost
of each category and report back outlining the items like you have already,
but with category and cost. While we wouldn't be able to go buy all these
items at once, we can put them on the wiki / website and they can be
purchased as needed. I know a lot of people already go buy small stuff we
need every week and likely wouldn't mind chipping in on safety stuff, I
think the barrier has been knowing WHAT to buy. If we have all outlined on
the website it would be easier for all members to see.

If someone would like to compile the rest of the info, just shoot it to me
and I can take care of getting it on the wiki if you don't want to hassle
with that.

Thanks,

--
- Joe Ferguson
http://www.midsouthmakers.org

 <https://www.google.com/voice?pli=1#phones>


 
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Danny Chamberlin  
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 More options Nov 17 2012, 1:24 pm
From: Danny Chamberlin <critte...@gmail.com>
Date: Sat, 17 Nov 2012 12:24:28 -0600
Local: Sat, Nov 17 2012 1:24 pm
Subject: Re: [MidsouthMakers] Safety Last

What about adding a priority to the items (or at least what you think the
priorty is :) )
Danny


 
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claudio donndelinger  
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 More options Nov 17 2012, 1:26 pm
From: claudio donndelinger <orias3...@gmail.com>
Date: Sat, 17 Nov 2012 12:26:00 -0600
Subject: Re: [MidsouthMakers] Safety Last

I'll start putting this in the wiki this weekend.

CD
On Nov 17, 2012 12:24 PM, "Danny Chamberlin" <critte...@gmail.com> wrote:


 
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paul.kos...@gmail.com  
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 More options Nov 17 2012, 1:28 pm
From: paul.kos...@gmail.com
Date: Sat, 17 Nov 2012 18:28:03 +0000
Local: Sat, Nov 17 2012 1:28 pm
Subject: Re: [MidsouthMakers] Safety Last

I've seen places using either running water eyewash stations or, less often, bottled water eyewash stations. The bottled water should be a smaller investment, is it worth the savings?

P()
Sent via BlackBerry by AT&T


 
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Kara Ferguson  
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 More options Nov 17 2012, 1:32 pm
From: Kara Ferguson <karamf...@gmail.com>
Date: Sat, 17 Nov 2012 12:32:04 -0600
Local: Sat, Nov 17 2012 1:32 pm
Subject: Re: [MidsouthMakers] Safety Last

Bottled water eye stations typically have to be replaced every six months.
The solution has a shelf life.
On Nov 17, 2012 12:28 PM, <paul.kos...@gmail.com> wrote:


 
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Joe Ferguson  
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 More options Nov 17 2012, 1:33 pm
From: Joe Ferguson <hal...@gmail.com>
Date: Sat, 17 Nov 2012 12:33:00 -0600
Subject: Re: [MidsouthMakers] Safety Last

Even with the shelf life, it may be cheaper over time than running
plumbing. It may come down to a initial cost VS long term cost issue.

--
- Joe Ferguson
http://www.midsouthmakers.org

 <https://www.google.com/voice?pli=1#phones>


 
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paul.kos...@gmail.com  
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 More options Nov 17 2012, 1:36 pm
From: paul.kos...@gmail.com
Date: Sat, 17 Nov 2012 18:36:33 +0000
Local: Sat, Nov 17 2012 1:36 pm
Subject: Re: [MidsouthMakers] Safety Last

Long term, plumbing is worth it. But the move to the new space happened after I went into exile in Mississippi, so I haven't seen it and don't know if we're going to be there for a couple years.

P()
Sent via BlackBerry by AT&T


 
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Joe Ferguson  
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 More options Nov 17 2012, 1:37 pm
From: Joe Ferguson <hal...@gmail.com>
Date: Sat, 17 Nov 2012 12:37:13 -0600
Local: Sat, Nov 17 2012 1:37 pm
Subject: Re: [MidsouthMakers] Safety Last

We will be there until at least July 2014

--
- Joe Ferguson
http://www.midsouthmakers.org

 <https://www.google.com/voice?pli=1#phones>


 
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Kitten  
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 More options Nov 17 2012, 2:11 pm
From: Kitten <skel...@gmail.com>
Date: Sat, 17 Nov 2012 11:11:06 -0800 (PST)
Local: Sat, Nov 17 2012 2:11 pm
Subject: Re: Safety Last

Possible Funding sources: Laser Cutter Fund. Last i heard we were still a
couple grand off from this goal, what's the harm in taking 200 or 300 out
to make the group a safer place. I don't feel this will impact the overall
goal too much.

Chemical Safety:
Gloves: Grainger #4T428 Sz 10, 22 Mil thickness - $11.65 (Priority #2)
Apron: Grainger #4T299 Sz L, 45" Long - $14.10 (Priority #2)
Goggles: Grainger #3RYE9 - $6.45 (Priority #2)
Goggles: Grainger #2KFX8 - $25.35 (Priority #3)
Respirator Medium: Grainger #3PB40 - $39.45 (Priority #3)
Respirator Large: Grainger #3PB41 - $39.45 (Priority #3)
Filters: Grainger #4JG12 - $30.75 (Priority #3)
Total: $167.20

Metal Working Safety: (PRIORITY #1)
E-Stops: Ebay #370497654259 - $6.99x6
Contactor: Ebay #181023963807 - $33.90
Reset Button: Ebay #350040793332 - $6.61
Indicators: Ebay #320855093218 - $13.90
Terminal Strip: Ebay #160740368985 - $3.99
NEMA Box: Ebay #321015671629 - $29.03
SOOW Cord and Misc parts like fuse an fuse holder: $50

Total: $179.37

Grand Total excluding eye wash station: 346.57


 
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Joe Ferguson  
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 More options Nov 17 2012, 2:16 pm
From: Joe Ferguson <hal...@gmail.com>
Date: Sat, 17 Nov 2012 13:16:36 -0600
Local: Sat, Nov 17 2012 2:16 pm
Subject: Re: [MidsouthMakers] Re: Safety Last

Thanks for adding more info!
On Nov 17, 2012 1:11 PM, "Kitten" <skel...@gmail.com> wrote:


 
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Kara Ferguson  
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 More options Nov 17 2012, 2:22 pm
From: Kara Ferguson <karamf...@gmail.com>
Date: Sat, 17 Nov 2012 13:22:17 -0600
Local: Sat, Nov 17 2012 2:22 pm
Subject: Re: [MidsouthMakers] Re: Safety Last

E-stops are purchased.

--
Kara Ferguson

Curious Tales of a Southern Life
www.KaraFerguson.net <http://www.karaferguson.net/>

Midnight Screaming: for your dark fiction addiction
www.midnightscreaming.com
@KaraFerguson


 
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Kara Ferguson  
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 More options Nov 17 2012, 2:31 pm
From: Kara Ferguson <karamf...@gmail.com>
Date: Sat, 17 Nov 2012 13:31:19 -0600
Local: Sat, Nov 17 2012 2:31 pm
Subject: Re: [MidsouthMakers] Re: Safety Last

The e-stops will be here between 12/5 and 12/21. Consider that my giftmas
present to the space.

--
Kara Ferguson

Curious Tales of a Southern Life
www.KaraFerguson.net <http://www.karaferguson.net/>

Midnight Screaming: for your dark fiction addiction
www.midnightscreaming.com
@KaraFerguson


 
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Kitten  
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 More options Nov 17 2012, 2:44 pm
From: Kitten <skel...@gmail.com>
Date: Sat, 17 Nov 2012 11:44:16 -0800 (PST)
Local: Sat, Nov 17 2012 2:44 pm
Subject: Re: [MidsouthMakers] Re: Safety Last

Kara, Thank you very much


 
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Kitten  
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 More options Nov 17 2012, 5:15 pm
From: Kitten <skel...@gmail.com>
Date: Sat, 17 Nov 2012 14:15:52 -0800 (PST)
Local: Sat, Nov 17 2012 5:15 pm
Subject: Re: Safety Last

I should have noted earlier that the E-Stop system proposed is a line
voltage method, we may want to consider going to a 24V system but that'd
require a 30A 2 pole minimum 24v coil contactor with aux contacts and an
additional 30 dollar 24 volt din rail power supply but would be marginally
safer if someone cut through a cord somehow. In the proposed system there
would be a 1/4 amp fuse and fuse holder in line with the hots as well as a
ground wire in the actual wiring. The purchased E-Stops are fine for either
method and are in plastic enclosures so a shock risk would only be present
on damaged wiring.

I personally don't feel at this time the added expense is warranted but I
figured that it should be up for a group opinion/vote.


 
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Ed Stafford  
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 More options Nov 17 2012, 11:13 pm
From: Ed Stafford <ed.staff...@gmail.com>
Date: Sat, 17 Nov 2012 22:13:31 -0600
Local: Sat, Nov 17 2012 11:13 pm
Subject: Re: [MidsouthMakers] Re: Safety Last

Hey.. just an aside on the wiring.. if it's a 30-Amp circuit, I think
you'll want to use 10ga copper wiring.  14ga is normally for 15-Amp
circuits.. Granted, I only really know house wiring so if I'm wrong, please
speak up.

On Sat, Nov 17, 2012 at 4:15 PM, Kitten <skel...@gmail.com> wrote:
> I should have noted earlier that the E-Stop system proposed is a line
> voltage method, we may want to consider going to a 24V system but that'd
> require a 30A 2 pole minimum 24v coil contactor with aux contacts and an
> additional 30 dollar 24 volt din rail power supply but would be marginally
> safer if someone cut through a cord somehow. In the proposed system there
> would be a 1/4 amp fuse and fuse holder in line with the hots as well as a
> ground wire in the actual wiring. The purchased E-Stops are fine for either
> method and are in plastic enclosures so a shock risk would only be present
> on damaged wiring.

> I personally don't feel at this time the added expense is warranted but I
> figured that it should be up for a group opinion/vote.

--
Ed Stafford

 
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Kitten  
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 More options Nov 18 2012, 12:38 am
From: Kitten <skel...@gmail.com>
Date: Sat, 17 Nov 2012 21:38:31 -0800 (PST)
Local: Sun, Nov 18 2012 12:38 am
Subject: Re: [MidsouthMakers] Re: Safety Last

The 16 or 14 AWG wire would only run from the coil on the contactor through
the NO aux contacts as well as all of the NC E-Stop contacts in series.
10AWG would come into the top of the contactor main contacts and then go
out the bottom o the main contacts to all protected outlets.  That way if
someone hits any of the E-Stops the contactor opens as well as the aux
contacts and prevents the contactor from re-energizing once the fault is
cleared until you hit the push to reset button which is wired as NO to
power.  Pressing reset energizes the coil and closes the main contacts and
aux contacts allowing it to remain energized when the reset button is
released.

I apologize for any confusion caused by my poor description.


 
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Ben Eishen  
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 More options Nov 19 2012, 10:32 am
From: Ben Eishen <b...@eishen.com>
Date: Mon, 19 Nov 2012 09:32:08 -0600
Local: Mon, Nov 19 2012 10:32 am
Subject: Re: [MidsouthMakers] Re: Safety Last

Picked up the indicator lamp.
--
Ben S. Eishen
773.234.7436 | b...@eishen.com


 
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