The collecting main at Thomas was not the round pipe that you see on the Walthers kit or in Dean Freytag's version, but was instead a squarish 7 sided apparatus. I knew that building it would be interesting so I put some thought into first. My original thought was to build it out of sheet styrene, but I was concerned with the tendency of that material to warp, especially longish constructions like the main. As I have before, I turned to Medium Density Fiberboard, or MDF for short. I used 1/2" material and cut two pieces and glued them together. I needed to make two of the cuts to form the angular bottom of the main after the glue up was finished.
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| glue up in progress |
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| Getting there, you can see the complex profile |
A few doses of automotive primer, sanding and light filling, gave me a pretty good looking collecting main. To attach it to the ovens I drilled a series of 1/8" holes in the bottom of the main using a Dremel drill press with the stop set for depth. I was then able to insert 1/8" styrene rod into the holes. 3/16" H-columns were glued to the bottom of the rods and then these were glued to .125x.500 styrene. The styrene strip fit into a groove on the back of the oven and was secured with epoxy.
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| Adding the legs - you can see the start of my larry car in background |
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