I’ve been wanting to try and make a mount for space gaming to go with my office chair - a Steelcase Leap. The organic-ish arms didn’t make an easy way to create a clamp system, but in fooling around with it recently I noticed I could remove the armrest pads and they had a nice 4-bolt pattern. Since this is my office chair I need to be able to swap in or out of gaming setup easily.
I added a 30mm tall adapter that lets me slide a 6mm x 30mm (actually, 1/4x1-1/4) bar in and secure at the back, with a plate adapter to mount my old HOTAS4 to the bar, and a pin at at the rear for quick release.
The plates and adapters are eSun PLA+ which is fairly stiff but has some durability/ductility to it. The bar was supposed to be 6061-T6 aluminum but I was lazy and didn’t feel like making a mess in the shop, ripping down some surplus plate I have, and I was too cheap to go out and buy 1/4x1-1/4 steel bar stock so I decided to print the bars from PAHT-CF (high temp nylon with carbon fiber). The 385mm bars just barely fit diagonally on my CR-10s.
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Thanks for the heads up… try https://imgur.com/a/dkILl03