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General Category => Pimp My System => Topic started by: Pawtucket Patriot on October 09, 2012, 03:06:55 PM

Title: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 09, 2012, 03:06:55 PM
After 7 years of lugging kettles full of hot wort up and down a flight of stairs, I'm thinking about building a three-tier gravity-fed sculpture over the next year.  I've thought about doing this before, but my limitations have always been: (1) not being very mechanically inclined; and (2) not being able to weld or not knowing someone who can weld. 

Well, my next door neighbor is very mechanically inclined (and a very nice guy) and I'm confident that he either knows how to weld or would know someone who does, probably on the cheap.

Anyway, this is sort of long introduction to a few questions I have:

1) Are welders able to build a sculpture without a detailed CAD drawing?

2) What sort of details does a welder need to build the sculpture?

I've only just started looking into building a sculpture, so I'm sure I'll have other questions along the way.  I would be grateful for any suggestions!  In particular, it would be helpful to know what sort of materials I should procure for building the sculpture frame.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Slowbrew on October 09, 2012, 03:13:15 PM
My experience with both questions has been "depends on the welder". 

I would hand draw a sketch to start with including general dimensions of your vessels.  Take a few pictures of examples with you and take it to welder and ask what else they need.  Every welder I know will help you with the details, if they are interested in the project and have the time.

Paul.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: bluesman on October 09, 2012, 04:32:40 PM
My experience with both questions has been "depends on the welder". 

I would hand draw a sketch to start with including general dimensions of your vessels.  Take a few pictures of examples with you and take it to welder and ask what else they need.  Every welder I know will help you with the details, if they are interested in the project and have the time.

Paul.

+1

You'll need a basic design.  Try researching online or getting some pointers from local homebrewers and/or local homebrew shop. You can try to simulate the Blichmann toptier design as a starting point.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Jimmy K on October 09, 2012, 07:58:38 PM
For most a detailed CAD drawing is not needed. But a they will need a good idea of what you want - that can be communicated through drawings, dimensions, pictures, talking, etc. 
 
For materials - Box tubing and angle iron are the two common materials I see them built from. They both come in varying dimensions, wall thicknesses, and alloys.  Most of those decisions are based on your budget.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: tschmidlin on October 10, 2012, 02:09:57 AM
Why not build it out of wood?  Wood is much easier to work with and is cheaper than welding a steel one.  I have a 3-tier wooden gravity fed system, it works great.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 10, 2012, 12:16:44 PM
Why not build it out of wood?  Wood is much easier to work with and is cheaper than welding a steel one.  I have a 3-tier wooden gravity fed system, it works great.

I've thought about this, Tom.  I'm sure I could made a great sculpture with wood, but I sort of like the challenge of using steel.  Also, I would think the steel structure would offer a more long-term durability.  Here in Minnesota, where the winters can be brutal and the summers hot and humid, a wooden structure may become unstable over time.  I could be overthinking this (which I frequently do), but I've made the decision to go with steel.  Also, I can get angle iron pretty cheaply in Minneapolis.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: AleForce on October 10, 2012, 12:51:01 PM
Why not use SteelWorks pieces for your sculpture?  I built one out of that 2-3 years ago and it's still working away. When I first built it I was using 5 gal coolers, then moved up to 10 gal.... Last November I moved to 20 gal B.Boilermakers and it is still sturdy enough for that.

Recent:
(https://c2ca84a2-a-d97903ee-s-sites.googlegroups.com/a/brewschool.org/brewschool/af/sm_AF1_wGDU.jpg)

older:
(https://c2ca84a2-a-d97903ee-s-sites.googlegroups.com/a/brewschool.org/brewschool/af/sm_AL_0001_inuse.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: saintpierre on October 10, 2012, 01:39:24 PM
Why not build it out of wood?  Wood is much easier to work with and is cheaper than welding a steel one.  I have a 3-tier wooden gravity fed system, it works great.
I did the same thing.  Although mine is technically a 2-tier since my burner is seperate.  I made mine out of 4x4's and notch cut for the 2x4 cross members.  It is solid.  The one down side is it is more flamable than metal  ;D
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Slowbrew on October 10, 2012, 01:48:51 PM
Why not build it out of wood?  Wood is much easier to work with and is cheaper than welding a steel one.  I have a 3-tier wooden gravity fed system, it works great.
I did the same thing.  Although mine is technically a 2-tier since my burner is seperate.  I made mine out of 4x4's and notch cut for the 2x4 cross members.  It is solid.  The one down side is it is more flamable than metal  ;D

It could depend on how mobile the OP would like his stand to be and/or how elaborate he may want it to be.  Lots of factors will come into play but generally a metal stand is a bit lighter and more portable.  I tend to over build with wood so everything ends up weighing a ton.  I'm much more likely to be more conservative with metal.  There are so many options available that it is really comes down to what you want your build to be.

Have fun with it no matter how you decide to build it!

Paul
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: tschmidlin on October 10, 2012, 04:19:10 PM
As long as you've thought about it. :)

The steel will certainly be more durable, my wooden one has only lasted me 10+ years ;D, and I have no idea how long the guy I bought it from had it.

As for weight, mine is in two sections that nest for stability.  No problems to move it around.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: euge on October 10, 2012, 04:23:22 PM
Why not use SteelWorks pieces for your sculpture?  I built one out of that 2-3 years ago and it's still working away. When I first built it I was using 5 gal coolers, then moved up to 10 gal.... Last November I moved to 20 gal B.Boilermakers and it is still sturdy enough for that.

Recent:
https://c2ca84a2-a-d97903ee-s-sites.googlegroups.com/a/brewschool.org/brewschool/af/sm_AF1_wGDU.jpg
 (https://c2ca84a2-a-d97903ee-s-sites.googlegroups.com/a/brewschool.org/brewschool/af/sm_AF1_wGDU.jpg)
older:
https://c2ca84a2-a-d97903ee-s-sites.googlegroups.com/a/brewschool.org/brewschool/af/sm_AL_0001_inuse.jpg (https://c2ca84a2-a-d97903ee-s-sites.googlegroups.com/a/brewschool.org/brewschool/af/sm_AL_0001_inuse.jpg)

^^^For some reason those images aren't generating. Fixed it. Sorta. Just hit "download attachment" and the image will show up.

http://wedo.hillmangroup.com/category/metal-shapes? (http://wedo.hillmangroup.com/category/metal-shapes?)

Lowes and Home Despot have this type of material. Just bolt it together per your specifications. Also, you can always easily modify or dismantle the structure (if necessary)- which would be a challenge with a welded rig. This would be my route.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 12, 2012, 04:03:28 AM
Yesterday, I discovered Google Sketchup, to which I may now be addicted.  Here is a mock up.  The rings in the upper right are going to be heat shields for the hurricane burners.

(http://i79.photobucket.com/albums/j137/mattschwandt/BrewStand_zpsb3ed1cfa.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Slowbrew on October 12, 2012, 11:29:47 AM
I use Sketchup a lot anymore.  I didn't even think to mention it.

Your drawing looks like good start.

Paul
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Vin S on October 12, 2012, 12:46:55 PM
Remeber measure all of your equipment( or any equipment you might buy or change :)) to make shelf heigths .Once welded you're committed. Another thing to consider on the top sides and bottom sides is to reverse the angle so it faces up then pots kind of lock in. If you use a cooler you could make a slight angle on middle shelf (wish I thought of this a couple years ago). Good luck on the build.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: AleForce on October 12, 2012, 12:52:39 PM
Not sure why the images don't appear in the post.  When I created the post they appeared...  Anyway the brewstation I built also is also where I store my brewing equipment.. It has wheels on it so when I am ready to brew I wheel it out into the middle of the garage.  I store all of my equipment on it - even the propane tank. When I'm done I wheel it back into it's corner and hope the wife doesn't hit it when she pulls into the garage (which she's threatened to do many times). 
Title: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 12, 2012, 01:40:37 PM
Remeber measure all of your equipment( or any equipment you might buy or change :)) to make shelf heigths .Once welded you're committed. Another thing to consider on the top sides and bottom sides is to reverse the angle so it faces up then pots kind of lock in. If you use a cooler you could make a slight angle on middle shelf (wish I thought of this a couple years ago). Good luck on the build.

I will definitely take actual measurements of my equipment. But one nice thing about Sketchup is that you can scale your drawing in actual units of measurement.
Title: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 12, 2012, 01:42:32 PM
Not sure why the images don't appear in the post.  When I created the post they appeared...  Anyway the brewstation I built also is also where I store my brewing equipment.. It has wheels on it so when I am ready to brew I wheel it out into the middle of the garage.  I store all of my equipment on it - even the propane tank. When I'm done I wheel it back into it's corner and hope the wife doesn't hit it when she pulls into the garage (which she's threatened to do many times).

I'm definitely going to use the stand for storage as well as brewing. I'll also be adding casters to my design so I can roll it out of the garage. Really, the trickiest thing will be making space in a one-stall garage!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Slowbrew on October 12, 2012, 02:08:22 PM
Not sure why the images don't appear in the post.  When I created the post they appeared...  Anyway the brewstation I built also is also where I store my brewing equipment.. It has wheels on it so when I am ready to brew I wheel it out into the middle of the garage.  I store all of my equipment on it - even the propane tank. When I'm done I wheel it back into it's corner and hope the wife doesn't hit it when she pulls into the garage (which she's threatened to do many times).

I'm definitely going to use the stand for storage as well as brewing. I'll also be adding casters to my design so I can roll it out of the garage. Really, the trickiest thing will be making space in a one-stall garage!

I would definitely put casters under it.  Even if you don't move it often you will need to move it.  For another $80-$90 mobility is more than worth it.  IMHO

Paul
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dbeechum on October 12, 2012, 03:07:30 PM
First, thanks for the Sketchup pointer.. I had totally forgotten about that.

Secondly, all I can say is watch for January's Zymurgy!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Jimmy K on October 12, 2012, 06:23:16 PM
I'm definitely going to use the stand for storage as well as brewing. I'll also be adding casters to my design so I can roll it out of the garage. Really, the trickiest thing will be making space in a one-stall garage!

I love the casters on mine!!  I do wish I bought ones with better wheel locks though. Mine can still roll if pushed firmly when locked.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 13, 2012, 01:02:16 AM
Here is my completed drawing.  Do you guys think this is detailed enough for most welders?  Anything I should add?

(http://i79.photobucket.com/albums/j137/mattschwandt/BrewStandwcasters-front_zps2e8c9bd0.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/BrewStandwcasters-top_zpsd9a5c0f9.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: AleForce on October 13, 2012, 01:09:56 AM
Looks nice.  Are you using a pump and/or RIMS tube ? Might want to think about how they will be secured to it.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: tschmidlin on October 13, 2012, 06:22:21 AM
It looks good, but it's missing several dimensions.  Length of the bottom tier and height of the risers off the top of my head.  I would also do two cross braces under the cooler for stability.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 14, 2012, 12:43:43 AM
I worked on the design a lot today.  I think I'm getting close to the final product.

Tom, I'm not sure I understand what you're referring to as "risers."  Also, there will be a flat slab of something (probably plywood) underneath the cooler, so I'm not sure I need an additional crossbar.

(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand2-FrontDimensions_zps6ca668c2.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand2-FrontDimensions2_zps93cfad13.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand2-BurnerCloseup_zps3d89861c.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand2-wkettles_zpsfe904f48.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: tschmidlin on October 14, 2012, 09:54:12 PM
No worries, you added the dimensions :)  I was talking about the distance from the bottom tier to the 2nd tier, and from the 2nd tier to the top tier.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dcbc on October 15, 2012, 12:08:48 AM
In my experience, you will want the dimensions of absolutely everything.  Buy your casters and burners and take them with you to the welder.  To make sure your dimensions are right for your equipment, I suggest laying out masking tape on the floor and putting your kettles on it to make sure it will work. 

Build it large enough to go two batch sizes larger than you ever thing you will go, but still hold the kettles for the batch size where you are now. 

I looks like you are doing a cooler shelf.  If that's the case, put some heat shields on there.  You will melt it in no time having it that close to the burner.

For your bottom tier, you need to decide how you're going to get the beer to the fermenter.  You won't be able to gravity feed from 10" off the ground.  When I did this and overlooked that detail, I used a pump.  If you are using a pump anyway, I'd suggest going single tier.  It gets old lifting the water up to the top tier of a gravity system.  I have done it both ways, and while gravity is infinitely reliable, the single tier has lots of advantages. 

If you are worried about space, consider going for a folding shelf setup for the second tier.  If you go look at the pictures of my current stand and go back in the google album and look at my last stand, I had two folding shelves, one of which held the mashtun/cooler and the other that was a work station.  The whole stand stored in a 22"x22" space.

If you have a pump, get the welder to make a mount for it and a drip shield.  On your burner wind screens, make sure you leave them open on one side.  That way, you'll have a way to have your gas plumbing go to the burner and, also, you want there to be a way for fresh air to get in between the kettle and the burner for good combustion.

Get them to do everything you can think of the first time.  It is always more expensive to go back and add stuff later (ask me how I know).  With that in mind, if you ever think it is the slightest possibility that you will go to a kettle or keggle mash tun, get a heat shield and pot support put on that middle tier.  It makes it so much easier to add the burner if you go that route.  I never thought I would do it and spent extra when I changed my mind.

I have had two stands built by others based on pretty basic sketches.  My guys want me to supply all the details because they don't want to get blamed (based on experience dealing with others) if it doesn't end up right for some reason.

A work shelf is also a handy thing to have.  I didn't put one on my most recent stand and miss it.  Also, have them put some pegs to hold spoons/mash paddles.

Finally, when in doubt, build it stout.  Go big and robust.  If anything, it makes it easier to mount stuff to it later, like pump switches switches, control panels, and gas plumbing.

Good luck.  And keep the pictures coming.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 17, 2012, 01:15:08 PM
I've given a little more thought to the sculpture design and I think I'm going to go with a single tier stand.  Thanks to dcbc for the help/suggestions!  Here is my mockup.

(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand30_zps116b866f.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand30_zps3c271fce.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dcbc on October 17, 2012, 04:34:17 PM
Looks good!  Where will you put the chiller?
Title: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 17, 2012, 04:54:54 PM
I'm going to mount a Therminator on the lower front crossbar where it meets the front right leg. The kettle on the far right will be my boil kettle.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: aa7yy on October 17, 2012, 05:45:30 PM
Well, in the title you started out as a "Non-Mechanical Brewer". Guess you decided to take it up a notch. Now you've added electricity, pumps and hoses, not to mention $$$$'s. Should keep you entertained.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 17, 2012, 06:10:04 PM
Well, in the title you started out as a "Non-Mechanical Brewer". Guess you decided to take it up a notch. Now you've added electricity, pumps and hoses, not to mention $$$$'s. Should keep you entertained.

True.   ;D
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dcbc on October 17, 2012, 07:11:18 PM
I was in this same boat.  I have some mechanical abilities, but welding isn't one of them.  When you compare the price of prebuilt stands (shipped) to the price of labor for a professional welder plus materials, you'd be surprised how reasonable the professional welder begins to sound.  Add to that that both of my stands have been ready to go within a week of my dropping off the drawings with the welder. 

Don't get me wrong.  I wish I could weld.  But if that were the case, I'd probably still be welding my stand rather than brewing on it.  :)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 18, 2012, 03:26:15 AM
A little more detail...

I plan on connecting the gas on/off valves to the burners via flexible gas pipe (too hard for me to draw in Sketchup!).

Also, I'll be chilling with a Therminator, not a Shirron chiller.  But since there was already a Shirron component model, I just scaled it to the Therminator dimensions.

(http://i79.photobucket.com/albums/j137/mattschwandt/Brewstand30wplumbing_zpsde879489.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: bluesman on October 18, 2012, 01:43:43 PM
Looks good Matt.  Much like the Brutus 10 design. Do you have a copy of the Brutus plans?
Title: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 18, 2012, 01:47:54 PM
I don't, Ron. Any chance you know where I could find them?  You built a Brutus, right!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: bluesman on October 18, 2012, 04:29:06 PM
I don't, Ron. Any chance you know where I could find them?  You built a Brutus, right!

BYO sells the plans. I built one using the original plan with a few modifications. Check it out!

http://www.homebrewersassociation.org/forum/index.php?PHPSESSIONID=e568126bf7d40a4898f27573d3d83277&topic=1077.0

You can also go here for more eye candy. :)

http://www.alenuts.com/brutus_clones/index.htm

Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dcbc on October 18, 2012, 04:45:01 PM
If you already have the kettles, lay it out on the floor and be sure the Brutus plans will work.  Masking tape works great for this.  The overall structure is pretty simple.  Big rectangle that holds 3 vessels.  Set your tallest vessel on a table.  At that height, can you easily look in to it, see it, stir its contents?  If not, go lower.  Consider the height casters will add.

The welder that did my stand didn't want anything to do with ensuring the air tightness of a gas beam like the one used on the Brutus design.  Hence, my iron pipe plumbing. 

If you are going with flexible plumbing, make sure there is a good way to support your burners.  Some people use the black iron pipe to hold the burners up.  My burners actually support my plumbing, although it would be easy enough to secure it to the stand.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 26, 2012, 12:31:30 AM
After measuring all my equipment, I made a few slight design modifications.  Also, I found a local welder who is willing to build my design for a reasonable price.  Here are a few of the drawings I am sending to the welder tomorrow.

(http://i79.photobucket.com/albums/j137/mattschwandt/BrewStand-FInal-Front.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/BrewStand-FInal-BurnerDetail.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: bluesman on October 26, 2012, 01:46:45 AM
Looks real good so far Matt!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 26, 2012, 04:53:53 PM
Looks real good so far Matt!

Thanks!  The welder is going to get started on it on Monday.   8)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 29, 2012, 06:12:31 PM
Off to the races!

(http://i79.photobucket.com/albums/j137/mattschwandt/IMG_62621.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dbeechum on October 29, 2012, 11:47:31 PM
Here's the skeleton for mine in progress.

(http://i.imgur.com/EE1za.png)
Title: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 30, 2012, 12:15:53 AM
Here's the skeleton for mine in progress.

(http://i.imgur.com/EE1za.png)

Awesome, Drew. Looks great so far!  It looks like you're going weldless?
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dbeechum on October 30, 2012, 07:35:38 AM
It looks like you're going weldless?

Yup - all being built with unistrut. For the basic frame and like what you see there is about $250 on the nose from the Despot. Spent an afternoon putting everything together in a test run, now just need to trim a few parts and re-assemble the frame and that's your basic stand. Everything else if just gravy.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 31, 2012, 06:18:21 PM
Welding is finished.  The welder did a fantastic job.  I've applied one coat of high heat paint. 

(http://i79.photobucket.com/albums/j137/mattschwandt/photo-13.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Jimmy K on October 31, 2012, 06:20:34 PM
Looks cool!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: jeffy on October 31, 2012, 07:23:44 PM
Wow.  You work fast.  I like the built-in wind guards for the burners.
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: blatz on October 31, 2012, 07:46:04 PM
that looks fantastic!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on October 31, 2012, 08:12:16 PM
Thanks, guys!  Here are some shots with the casters on.

I had the welder slot the burner shrouds so that I could fine tune the burner height (hurricane burners).  Next on the list will be installing the burners and the gas plumbing.  I guess I need to read up on gas plumbing.   ;)

(http://i79.photobucket.com/albums/j137/mattschwandt/photo11.jpg)
(http://i79.photobucket.com/albums/j137/mattschwandt/IMG_1465.jpg)
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: dcbc on October 31, 2012, 08:51:28 PM
Looks great!  Good luck with the plumbing.  Get some good pipe dope!
Title: Sculpture Build For The Non-Mechanical Brewer
Post by: bluesman on November 01, 2012, 04:09:50 PM
Very nice looking stand Matt!
Title: Re: Sculpture Build For The Non-Mechanical Brewer
Post by: Pawtucket Patriot on November 19, 2012, 03:01:43 AM
I'm just about done with the stand.  I've spent the better part of the last two weekends working on the gas plumbing, some copper sweating (for a WIC), and wiring pump switches.

Here's a video I made today...
https://www.youtube.com/watch?v=XRDdJ1FqWsM&feature=plcp