With the merge collector done, it's time to move on to the manifold mockup and welding jig. I 3D printed parts to model the various runners. Printed in ABS with a 0.6 mm nozzle and a 0.3 mm layer height (these ones worked the 0.4 mm nozzle and 0.2 mm layer height were not great). I didn't spend big $$ on the parts and it looks like it will work.

https://www.thingiverse.com/throttles...

https://www.thingiverse.com/thing:486...

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