Well, I finally have good news in that I am making good progress on the build. I picked up the rolled sheet metal on new years day.
It cost me $250 to have 8 pieces of sheet slip rolled in to cylinders. As I stated in my last post, I wasn’t able to get all of the components rolled in to cylinders. The supply house’s slip roll was simply too large to work with small sized sheets / diameters. So I need to find another way to make to cylindrical ducts and other smaller components.
I have started to weld the cylindrical shell seams so that the rolled sheet metal forms cylinders. Below is a video of my progress and a welding jig I made to help keep the sheet metal from warping .
I researched Buying A harbor freight slip roller but found it can only roll 24 gage stainless steel. The only slip rolls able to do what I need cost ~$1000. I simply do not the the money for that. I did see a person build a slip roll out of some Axel shafts and transfer case gears. This will still cost $100-200 for parts but still within my price range.
So far I only have the rollers which will be made from the rear drive axels of a 1 ton Chevy pickup (~ $80 for two 3 foot shafts) not sure how wide I will make the slip roll so I may only use one shaft keeping the other as a spar for my truck.
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