Andy,
The axial flow straighteners are machined on a highly complex setup, a rotary table setup on its side in mill. Very highly complex...Actually, I turned the front diffuser to fit bearing tube, and fron end, then did the top mill work on it. After that, I setup a fixture in a rotary table to bolt the diffuser to and used a hole saw. It took a little experimenting to get it in the correct spot, but once there, just cut to depth rotate and voila...thirty some rotations later you have thirty some slots cut in the side of the diffuser. Then take aluminum tubing the same diameter as the hole saw, cut it into approximately fourths and stick in the slot. Weld them in place if you can, also a nice press fit will help you here. Then comes the fun part. CAREFULLY machine the outer diameter of the vanes and the face to fit the front end and the canister. TADA. It actually sounds more complex than it really is.

FHHOBBIES,
Here is a video of mine just coming up to idle. I walk around with the camera to show the back end and that there are no flaming balls of fire belching out the back end.

Martin



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