Started a new 4" shotgun/coil/leibeig build the other day.

[spyked]

A Frankenstein of sorts. I had an older 2" boka still that I had built several years ago (first build) which worked fantastic (94% consistently) until it was lent to a friend. It was abused and modified over the course of 4 years to the point it no longer worked as well as it had before. With a newly acquired set of fabrication skills looking me in the face, I dusted off the remnants and decided to attempt a cobbled design. Obtaining some sections of 4" M-type copper tube from the local scrap yard and armed with a machine shop, forge and tig welder and a little fire. I began the journey..

Not wanting to wait or pay for the connectors necessary for my design I decided that I would fabricate most of my connectors with copper sheet and leftover parts from my scrap bucket.

This means I would weld/braze and solder the copper as necessary. In the lathe I would spin cones and end caps.

I tentatively understand that with increasing your column to a 4" diameter, the largest issue becomes being able to knock down the massive amounts of heat/vapor that will be traveling. So I am throwing all I have at it. The cooling area will be served by a 4" x 12" inch shotgun condenser with (10) 1/2" tubes and two 3/4" water input/output "fingers." The reason for the fingers is that I am going to drop my original 2" 1/4" double helix 3/8" cold finger condeser through the center of the shotgun assembly.... for whatever benefits it may lend. I will also have a vapor control output below this with a 3/4" - 1/2" jacketed leibeig condenser controlled with a 2" tee to a 1" ball valve for drawing off the hearts.

So... On with pictures...



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