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The problem with CAD, is a lot of shops don't have the equipment to use it to it's full capability. A lot of regular muffler shops can make what Ben would need and I can bet they don't know how to use CAD. The easiest way to have it done is with paper towel tubes. I've seen MANY higher end fabricators use this for designing manifolds. But when it comes down to it, unless you can weld yourself or at least know how to tack (bring tacked piping to a fabricator to finish welding it)... it's just easier to buy a pre-made kit.
Ben, I like that shorty exhaust... you should get it! I bet it will sound awesome.
Thats why you give them the 3 view drawing with measurements...
They don't need to know CAD to read off a set dimensions from 3 view drawings...
The reason I don't like the paper tubing is because it's flimsey, they're all straight pieces, and people who build good exhaust and header systems, do a mockup in cheap steel, essentially designing as they go (if they don't have CAD access) and essentially build a prototype. They then copy the prototype using jigs or measurements or what have you...
The guys who are even better don't even bother with the mock phase, they tack up the finished material, adjust, then final weld.
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