First, thanks to the creator of the original arm. Unfortunately, it wasn't rigid enough. The one I printed in PETG 'stretched' and became misaligned on the frame rail. This one has extra material to help maintain the arch shape. I also added features to the threaded holes to hopefully make them easier to print. I still recommend 'chasing' the 10mm threads unless your printer is really dialed in. I broke that printed bolt a couple of times (before I made the last edit to the design).
v10 has a reinforced area where v9 started cracking in use.
Fixed the hose port so that it's a friction fit for 1.25" hoses. It's a suction line so shouldn't need a clamp.
The author remixed this model.