I'm a bit conflicted on the boom arm. It is super handy and I use it all the time, but certain things annoy me about it. First, the articulation isn't great but maybe it's how I have my vac cables wound. Maybe I need to re-read the installation instructions and give the joint some WD40. It gets tangled up with the tool/sander mount but I also have custom sleeved my vac hoses which makes them a little less pliable. I have to fight it to get it to tilt where I want it. Also, I seem to have lost the hex head screw that locks the articulation, so if anyone knows the specs on that screw, I would appreciate it!
The boom arm comes with a handle and vac tools holder which is handy, but the plastic hole where the boom arm seats broke. There's a lot of weight and stress at that point, and Festool under-engineered the plastic mounting point. I had to switch it to the opposite hole and hope this one doesn't suffer the same fate. Asked Festool to replace and they told me apparently the handles are considered a "consumable." Pretty ridiculous.
The boom arm comes with a rinky dink expandable metal "balancer dealey" which almost doubles the floor space of the vac and causes one to trip over it constantly. I promise you it will be the first thing you remove. I'm sure the lawyers had it added. Note that the vac can be tipped over without the balancer, but it's quite well balanced without it, even with the dust deputy I have up top. I've tipped it over a couple times when in a rush and not paying attention.
Be sure to measure the height of any doors and compare them to the height of the boom arm. Mine is too tall to get under a dividing wall and door that separates my storage room from my woodworking area. I have to kinda tip the unit and shimmy it, definitely not a Festool approved work practice!
I don't think it would be difficult to make a better design. I ended up acquiring a second CT36, and was considering adding a workcenter to this one, but after tallying up the more than $500 in the Festool workcenter and additional accessories, I'm going to be building a DIY version made from 5/8" baltic birch plywood, cut on CNC. Here's some quick renders:
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What's cool about this design that isn't shown - I'll be using 5/8" metal smooth rod standoffs protruding out of four mounting points that Festool uses to attach the hose garage. I'll be welding the additional smooth rod onto the top of Festool's screws. So the entire workcenter will be elevated above the hose garage, meaning you'll still be able to make use of that for storing your hoses, etc. Also, I have to test this, but potentially you can also slip a systainer down there... More to come, I'll post the finished design soon.