Step 5: Proper Soldering Technique.

Now everything is ready to solder together! If you've done your prep work properly, this step is easily the most fun.

If you've never soldered copper before, I suggest starting with the columns that will end up vertical, since these don't involve non-standard joints. Use the joint brushes to thoroughly clean the areas to be joined. The copper should be bright and lustrous before you solder. Use the flux brush to apply flux to all surfaces you want to bind together with solder. This means the inside of the fitting AND the outside of the pipe. Then place the pipe inside the fitting, make sure it goes in all the way. Place the part in a vice (wrap it in a towel to avoid marking the beautiful copper) or on the edge of a table. Remember, this copper is about to get VERY HOT.

I've found that trying to flux and solder joints that are far from each other in one soldering run is a bad idea. When flux is heated and not soldered it loses is flux-iness. The joint will need to be re-fluxed or the solder won't flow correctly. If joints are literally right next to each other this isn't a problem.

Fire up the torch and adjust the knob so that the bright blue cone of flame within the outer flame is about an inch long. Touch the tip of this inner flame to the joint, preferably near the lower surface (heat rises). Touch the solder to the OPPOSITE SIDE OF THE JOINT from the flame. The ENTIRE JOINT must be hot enough to melt the solder for the solder to flow, so this prevents making a bad joint. Slowly melt the solder into the joint until one drop of solder falls from beneath the joint. This ensures you have placed enough solder. If you want a clean-looking joint (no solder blobs), quickly (before the solder solidifies) brush the exterior of the joint with the flux brush AWAY FROM YOUR FACE. This will remove the majority of the exterior solder drippage.
<p>So, if I was going to use an Erlenmeyer flask as a distillation pot, how would join the column to the flask? Any ideas? I'm a chemistry teacher with access to most glassware items but we're low budget enough to not have distillation equipment...</p>
Be extra careful to prevent pressure build up in the flask. You could try a stainless steel or copper tube inserted into a drilled rubber stopper. Use as wide a bore as possible to prevent impedance. The rubber should hold up to the temperature if you're not working with temps above 100C boiling point. Don't expect the best chemical purity since plasticizer may get into the distillate.
<p>I like the project but I bought a complete distiller condenser made from glass. Copper in my opinion would heat up to quickly and result in you getting different types of separation. It can work but copper is a good conductor of heat and electricity. Mine was a $219 dollar pyrex condenser with column distiller set up.</p>
After looking at expensive glassware ($50+) this seems very useful! I will be making one for chemistry use
<p>Instead of making the hole in the pressure cooker, you could take a rubber or cork stopper drill a hole in it to fit over the fitting coming out of the pressure cooker and then just press the pipe over the cork.</p>
Does anyone appreciate the irony that there are 12 steps in this project?
<p>didn't notice yell.</p>
<p>how do you make those diagramsof the lab equipment?</p>
<p>The images used to have captions on them with a citation. I'm not sure what happened to those. The distillation figures are from Techniques in Organic Chemistry by Mohrig, Hammond, Schatz. ISBN 978-1429219563. An excellent book worth investing in.</p>
<p>&quot;So for those of you in the non-US/UK portions of the planet, I'm sorry.&quot;</p><p>Don't feel sorry, it's not your fault! ;)</p><p>BTW: thanks for the great instructable!</p>
<p>I made mine last summer with an old aluminum pressure cooker. It works pretty well. I need to get better seals for the cooker because there is a good amount of losses. the way I joined the copper fitting to the lid of the cooker was by drilling out a hole and tapping it with pipe thread and joining it with a fitting. It worked really well.</p>
<p>Hey, that looks great! I had to do a double take because it looks so much like mine. Nice work, and I'll keep the tapped hole idea around for the next project. </p>
web site http://homedistiller.org/forum/viewtopic.php?f=3&amp;t=5041
is this good enough or should i keep going i found these sights in 5 min do your research before you brew 'PLEASE'
sorry you can do it if you want to i will not make my spirits in it and personally wouldn't drink it but go ahead not trying to sound rude it just isn't for me
I just don't want anyone to 'DIE'
I understand your concern but I disagree. From a scientific standpoint I wouldn't exactly call answerbag.com or yahoo answers references. There is one linked paper from India that looks reasonably legitimate which states, <br> <br>&quot;Therefore, it can be suggested that general neurotoxicity produced by aluminum is not modified by ethanol. However, the aluminum load caused by aluminum exposure, may be influenced by ethanol co-exposure.&quot; <br> <br>In other words, ethanol MAY help your body absorb more aluminum, but doesn't convert aluminum into poison. The same could be said of having a beer with the meal you cooked in an aluminum pot. <br> <br>The methodology of the paper included dissolving large amounts of aluminum in &quot;nitric acid, sulphuric acid and perchloric acid in the ratio of 6:1:1&quot; and feeding it to rats. Wort is slightly acidic, nowhere near H2SO4 and HNO3. <br> <br>Aluminum metal is highly reactive. It reacts with oxygen to form Al2O3, which is one of the most stable compounds known. It's sapphire. It's sandpaper. Any aluminum exposed to air will immediately form a coating of Al2O3. Al2O3 has a boiling point of 2,977&deg;C, which is a little hotter than a pot still can get. Other aluminum compounds tend to have extremely high boiling points or undergo decomposition at high temperatures before being able to boil. That means aluminum in a pot still is very unlikely to make it out of the pot still, since that requires the aluminum compounds to boil. <br> <br>You might run into a few more problems if the condenser was made of aluminum. Or if the container used to store the spirit was made of aluminum. But I very much doubt an aluminum pot still could do anything worse than if your grandmother cooked you some spaghetti sauce in an aluminum pot. <br> <br>I understand the &quot;better safe than sorry&quot; mentality. Aluminum is kind of a touchy topic. There is a lot of pseudoscience surrounding relatively mundane things like aluminum, copper, magnets, vaccines, etc. But there is a big difference between informed caution and fear mongering. Given the evidence considered here I hardly think warnings of death are warranted.
DO NOT EVER USE aluminum to distill spirits you will poison your self or someone else aluminum poisons spirits use copper or stainless PLEASE
That's an important claim if it's true. I haven't found any good documentation of that. Can you please provide a reference?
I like the way this instructable is laid out, very easy to follow. I have heard that crushed glass works great as copper pot scrubbers are somewhat hard to find. If accessible, well sanitized auto glass breaks into nice small pieces, just right for this application.
To be certain that you get the most efficient flow of coolant and also more surface area inside the condenser, could one step up the dia. of the tubes used for the condenser chamber? Say inner tube 3/4&quot; and outer at 1.25 or 1.5&quot; even? <br>
thank you <br> good post clears up my problem.
Hello sir <br> I understand most of your design but am having trouble with the thermometer. were is the sensor located.is it in the column above the packing. I'm just not sure.
The sensor (thermocouple) is the silver probe which is stuck all the way through the rubber stopper at the very top of the vertical column. You can use a regular thermometer if you wish, but digital thermocouples are not hard to come by, and they are much more accurate. Just be sure to get one that has a rigid metal probe. This one or anything similar would work: <br> <br>http://www.ebay.com/itm/LCD-Type-K-Digital-Thermometer-TM-902C-2-Thermocouple-Probe-/190579208001?pt=LH_DefaultDomain_0&amp;hash=item2c5f67ef41 <br> <br>The probe should be positioned to read the temperature of the vapor right where the vapor travels through the T section on its way to the condenser. Don't let the probe touch the column packing or the side of the column, and be sure the probe is sticking through the stopper, not with the tip inside the rubber. It should be measuring the vapor temperature only.
Vaary nicshe, a'll drink to thish, hic
Hi<br><br>Nice looking fractional pot still, I would have tried to find 304 or 316 stainless for it because of the pain in the ass cleaning of copper after each run or you get opper sulphate in it and then you go blind, but keep the copper scrubbers because if theres no copper at all there will be an unpleasant rotten egg smell<br><br>Looks like your running it a bit to fast, to get a purer spirit it should be about 80 deg c - for a pot still might be a bit higher but not to close to 100c<br><br>Nice job in the soldering make sure it's lead free solder or you will get led poisoning without a gun involved hahahaha but seriously it's no laugthing matter <br><br>Heres my setup<br>All glassware and fits to a modified 50 litre keg<br>
http://www.labdepotinc.com/Product_Details~id~761~pid~59709.aspx <br> <br> <br>I found this from a chemestry supply store for $250... do you mean that glasss would be safer to use... and are you saying coppy plays a role in filtration? <br> <br> <br>
Thank you for this tip: <br>&quot;If you want a clean-looking joint (no solder blobs), quickly (before the solder solidifies) brush the exterior of the joint with the flux brush AWAY FROM YOUR FACE. This will remove the majority of the exterior solder drippage.&quot; <br> <br>I'll try it next time I plumb, for whatever reason!
This pressure fitting is gas tight? Does the lid just jam tight against the edges of the copper female adapter?
Sorry for the slow reply. There is a very small amount of leakage when using the fractionating column, about as much as what escapes from the emergency pressure release thingy (to use the technical term). I may seal this with epoxy at some point but it hasn't been a big problem so far.
A very old school way of sealing small gaps in a still was to mix a dough of just flour and water and use the paste to seal any small holes- the advantage to this is that it is non-toxic- when you are done wash it of and reapply next time- no risk of hot liquids/ gasses/ being affecting the epoxy or the epoxy contaminating your process.
Actually I tried this method. I must not have done it right because it didn't work very well. I was probably supposed to let it dry. I get a little frantic and impatient at the end of a project. I'll have to try it again next time.
The best thing about the &quot;green energy movement in the US, is that they have lifted the prohibition on nome distilling alcohol, as long as it us used for fuel purposes mind you...
Actually I believe you still have to register with the ATF and pay fees to do any distillation of alcohol. Before going ahead with distilling anything, even if you are just using it for fuel, I'd double check with the ATF because there is no difference between a rig for making fuel and one for making drinking alcohol.
I've done some research into the distillation subject because of my son's <br>interest. It is illegal to do any distillation at home for any purpose <br>unless you buy a distillation permit from the government to <br>&quot;distill fuel.&quot; The information that I gathered was, In Illinois it cost <br>$3600.00 for a permit for fuel distillation for one (1) year. No <br>individual is allowed to distill spirits for their personal or any other <br>use. You can make beer and wine to your hearts content, but distillation <br>will end in trouble. The main reasoning that was given was the government <br>claims that you will get lead poising. They think the public is still <br>using car radiator to use as a condenser.
The main reason would be ... tax money. If people really were free and they acted so freely as to actually do something that man has been doing for thousands of years then they gov't types wouldn't have the power to tell them what to do and what not to do and to have a nice cushy gov't job and benefits because there wouldn't be tax dollars enough to go around.
I believe that to be very true, and the <strong>real reason</strong> we can't distill our own.<br> <br> There is too much profit from the taxes collected from the sale of the spirits.<br> A great portion of <strong>that revenue would be lost</strong>, So the government spreads the<br> false story about getting lead poisoning if you distill your own.<br> <br> We have come a great distance since prohibition and World War II, but the<br> government wants to keep us there. Locked in that period's frame of mindset.
You also can distill.. essences. Dunno if there it's illegal or not. But these things usually are illegal to avoid people<br>Lead poisoning could happen, if you use lead xDDD<br><br>Prohibition in distilling is only for money, gov money, big companies money. As many other things, they are not interested in you know the procedures but as information flows then it's better forbidden some activities.<br><br>There is a risk in distilling but i think it's not much more than cooking with the pressure pot (a real one with the valve).<br><br>I'm interested in this instructable just for essences (herbal essences).<br><br>Nice job :D
You can make 15 gallons of hard liquor a year back in 1991, I don't know if they chanced the law, but back when you could brew up 195 poof and then mixed down to 60 poof as according to state law.
Sorry, not any more. Not without that license form the state. They are pretty<br>adamant about no one distilling. Home breweries for beer and wine are okay <br>because you are fermenting, zero tolerance on distilling.
A BIG Thank You to everyone who voted for me in the Mad Scientist Fair! You guys rock!!
Here's my setup.&nbsp; It's almost identical to yours, except for a few modifications. My coolant is a closed loop using an aquarium pump I had from an old computer water-cooling setup.&nbsp; I found some great 3-way fittings at Home Depot that were like 1/2&quot; - 3/4&quot; reducing couplings but with a 1/2&quot; fitting coming off one side. I drilled out the retaining lip inside, put the fittings on either end of the 3/4&quot; tube, then passed the 1/2&quot; tube through it.&nbsp; soldering was interesting, but not terribly difficult.&nbsp; I also forewent the screw fittings to save a bit on cost, and just slip-fit the pieces.&nbsp; I was able to tap 3/8 NPT threads into the pressure relief valve without even affecting the valve seat, so I can even still use it as a pressure cooker.&nbsp; Let me know if you see something you're curious about.
I thought about trying to use the threads that were already in the cooker. I'll have to try that out next time I make one of these.
I am sorry aeturnusjunk but a metal still is not &quot;laboratory quality&quot;. Glass is used in laboratory stills to minimise metal ion contamination. Also hot copper is sufficient to catalyse reactions with ethanol.<br> <br> <a href="http://www.sciencemadness.org/talk/viewthread.php?tid=8709">http://www.sciencemadness.org/talk/viewthread.php?tid=8709</a><br> <br> People do get away with copper stills all the time by avoiding hotspots, even commercially, but it is risky.
Sorry, I didn't mean to discourage you. You don't have to be a glass blower though, in the lab we use QuickFit glassware<br> <a href="http://en.wikipedia.org/wiki/Quickfit_apparatus">http://en.wikipedia.org/wiki/Quickfit_apparatus</a><br> - expensive but very good and lasts. Before quickfit we used to use glass tubing and corks.<br> In industry potable liquids including wine, beer and spirits are processed through stainless steel. When I was a teenager I made a water purification still from aluminium. The tank eventually corroded but it provided many years of service.&nbsp;<br>

About This Instructable




Bio: I'm a graduate student in the Materials Science department of the University of California at Santa Barbara. I made these Instructables while I was ... More »
More by laserjocky:Digital Frequency CounterLearn Counter ICs Using an ArduinoAnalog Function Generator
Add instructable to: