Proposed LM Build

[czedd]

Hi All,

Since joining I have been doing a lot of reading and was going to purchase a built LM. One of my neighbers was having a huge clean up and has given me :D a 6mtr length of 76mm X 1.2 (3"), 25mm X 1.2 (1") and a 19mm X 1.0 (3/4"). There is also a box of copper fittings that I will need to go through.

I will attempt to build a 3" Bok and a Pot still with some pipe left over. Plan is to have a 1.2 colum with the 300mm bok attached via a tri clamp

Questions I have are

1) Is the 3" wall thickness of 1.2mm ok for the Bok and Pot Still.

2) For the condensor do I do a double 1/4" coil with coldfinger or do I just do a double wind with a larger diameter pipe?

3) Any other suggestions / ideas

Thanks

[maheel]

i reckon the wall thickness will not matter much, as long as it does not bend over in use it will be fine :lol:

personally i would be using 3/8 th to either wind a double coil or adapt a cold finger.
i like the 3/8 for it's ability for less constriction on water flow

but thats just me.... lots or most like 1/4 coils....

[czedd]

Have finally started the build with the condensor wind first up. After a lot of reading I decided to build a double wound condensor rolled around a Jig and fill with salt.

coil winding (648 x 484).jpg

Final Coil Wind (600 x 448).jpg

Coil (448 x 600).jpg

[czedd]

I might have rolled the coil too tight as there is approx 1/4' gap from oustide coil to coloum wall. Will this be an issue ? Should I rewind with a larger gap between first and second coil. Curently its about 1/16".

coil sizeing (448 x 600).jpg

[maheel]

nice coil, what size pipe is it? (coil)

[czedd]

Hi Maheel
Pipe is 3/8" that was filled with salt and wound around a 3/4" mandrel. How close to the column wall should the outer coil be??? Im concerned that there may be too much of a gap?? I have checked it inside a 3" pipe and there is just under a 3/8" gap from ouside coil to pipe wall.

[maheel]

i thought it was 3/8 :)

you could stretch out a scrubber and wrap that around the coil, that will help any gap and stop vapor.

it should knock a lot down...

i was just thinking about making a coil just like it for a 3" bok i was thinking of making (i have the 3")

keep us posted

[czedd]

Thanks maheel

I will stretch out a scrubber and wrap it around outside of coil as suggested. Here is a pic of coil in 3"pipe.

[SBB]

Nice job on the coil Czedd......my first attempt at winding one is in my scrap pile :(

[bradsgonetrekkin]

Looks the goods for sure! Keeps us posted how the rest of the build goes.

[Tracker]

Looks fine to me, if you plug the inner space with some scrubby, it will force more air/vapour flow between the smaller gap between the coils and all will be good.


Cheers.

[czedd]

Been out of action for a while but getting back into the build. Here are some pics. Almost ready to start soldering

I cant seem to find a copy of the 3" Bok template. Can some one please send me the link or a copy.

[MacStill]

I cant seem to find a copy of the 3" Bok template. Can some one please send me the link or a copy.

Just cut your slots for the plates at roughly 30 degrees, then put your flat bits of copper in the slots and mark them... cut them a few mm too big and grind/file/sand them down once soldered in and you'll be fine ;)

Oh and dont forget the drip tab needs to be folded down once the bottom plate is soldered in.

[SBB]

The only one Ive seen is on HD somewhere I think...its a template for cutting the plate slots. The one Ive seen is for a 2 incher and you have to increase the size by adjusting your printer.
If you do find it Im interested in the template too.
BTW thats a good looking boiler ya got there ;)
SBB

[Tracker]

This could be what you are looking for http://wiki.homedistiller.org/Boka_Refl ... w_To_Build
Not a template, just the design drawings.
Just adapt your design to the different tube size.
Nothing is set in concrete, just use the design criteria e.g. plate configuration, take-off tube & tap, condenser coil placement etc.


Cheers.

[MacStill]

This could be what you are looking for http://wiki.homedistiller.org/Boka_Refl ... w_To_Build
Not a template, just the design drawings.
Just adapt your design to the different tube size.
Nothing is set in concrete, just use the design criteria e.g. plate configuration, take-off tube & tap, condenser coil placement etc.


Cheers.

and leave at least 1 inch between the plates on a 3" column ;)

[SBB]

Yep thats it Tracker.......there is a PDF file under "Template" ...for cutting the plate slots.

[czedd]

Thanks Guys, I have read the Boka build thread but was not confident with marking the cut lines for the plates. Couldnt find the 3" templates any where so I have taken your advice and upsized in my printer which has worked out well. The upsizing has also made the gap between the plates just over an 1" (1 1/16). Heres what it looks like

[Kimbo]

Looks good czedd, keep the pics coming ;)

[SBB]

Im with Kimbo.....lots of photos please :D One of those is next on my build list.