TL/DR: If considering a microscope stand, a boom arm offers a lot more stability than an articulating arm. The latter might be unusable depending on one's setup.
I recently modified my microscope set up by replacing the boom arm with an articulating arm. While the boom arm does offer rock solid stability, it takes up a fair bit of workbench space. It's also really heavy so it's not easy to just move out of the way.
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I attached the articulating arm to the wall at the back of my workbench. I can swing it completely out of the way of my bench giving me a lot more usable work area. It allowed me to relocate equipment like my hot air station that wouldn't fit with the boom stand in the way.
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The downside is the articulating arm is a lot more wobbly than the boom arm was. This makes it more difficult to use the microscope via the eye pieces, since any small movements translates into a shaky image. At low magnifications (7x to 10x) it's not so bad. At higher magnifications it becomes unusable.
I tried it with a 0.5x barlow lens which raises the distance between the lens and the work area. While this is good for things like soldering work, it further exacerbates the shaky image.
One solution might be to install a camera + screen and use the microscope without touching it. In theory this should work though it costs more money and further complicates this setup.
In the mean time my solution is to simple wedge something between the camera arm and the workbench. This almost completely eliminates any shakiness and results in a much more stable image. Even at maximum zoom the image is nice and stable.
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In the long run, I'm going to look at fabricating a more permanent brace. Maybe something that can be adjusted up and down.
I also ordered a 0.7x barlow lens to try. I still want more space between the bench and the microscope and a 0.7x lens seems like it might be a good solution.