I'm a stickler for using the correct tools when servicing any mechanical device, heli's in particular.
I've been playing with a Novus 125 CP incorporating the TAGS electronics and found myself faced with wanting to remove a few of the balls as used on the flybar control lever and swash. But what wrench fits the hex on those things? And with the factory-applied threadlocker being so secure there's a 95% chance of twisting the screw threads in half while trying to remove the part.
Here's my answer, a very affordable alternative to buying some hard-to-find 1/16" socket driver:
Strangely enough, the ball's hex isn't a 'regular' metric size, being that it's 1.6mm nominal. But this is an exact match for 1/16" (.0625in), a size used for the hex key in 6-32 set screws. Perfect!
The close proximity of heat-sensitive components makes the direct application of even a micro torch flame too risky when wanting to soften the threadlocking compound. So in this case, I heat the socket with said torch and let it transfer the heat to the screw in a very safe manner. It may require a couple heating cycles to soften the locker but it's obvious when it works -- the screw slowly backs out of the threaded hole with no abrupt torque change.
I've been unfortunate to break two screws so far, prior to my invention, one in the feathering spindle and one ball in the opposite side of the pictured flybar. A tiny, heated soldering iron tip pressed against the spindle screw may have transferred enough heat for safe removal but I'm not so sure I could have missed melting the plastic grip. Heating a Phillips screw driver is safer but the heat needed would have destroyed the temper of the driver's steel. Will have to think up a new and better plan should removal of that tiny screw be needed in the future.
Just thought I'd share.
Oh, here's a short and mostly out-of-frame video of my N125's first flight. It's flying VERY nice!
Watch at YouTube
So many heli's - too little time...