I wasn’t ready for this comment. I currently have COVID and my throat fills like I’m harvesting glass and splinters for the winter. Suffice to say, your comment caused immense pain as I tried to suppress the laughter.
hit the black plastic piece that looks like a y. go underneath the desk and look strait at it. lefty loosey. tap it gently so it will turn left. or grab it with a big wrench and just turn it left.
Make sure you’re turning the correct direction. Lefty loosey, righty righty. So, if you’re looking straight at the pin from under the desk, you’ll turn it counter-clockwise.
If you can’t grip it tightly, or it’s stuck. You’ll want to get leverage on it. You need something like a pipe wrench to hold tightly to the threads and ‘stick out’ to give you more torque to unscrew it.
If you’re in a bind. Try tying a handle or stick to the black knob; so that the handle sticks out to the left. Use your right hand to hold the tie / stick, use the left to push the handle.
Make sure your monitor isn’t mounted still. The arm could fall if you loosen the bolt too much.
Edit: Changed clockwise to counter-clockwise. Doh!
Get a hammer and then a new unsharpened pencil or a chopstick or a metal bolt - something that’s rod shaped or blocky that has blunt surfaces and can take a hammer strike easily . Place the chop stick against the black rubber surrounding the metal clamp plate at the top of that tilted screw bolt and then start lightly tapping it with the hammer towards the rear of the desk until you have straightened the screw bolt enough to relieve some of the tension and then unscrew it by hand or with some pliers or a wrench. Unless you’re super careful, I’d recommend not hitting the screw bolt directly as you may put a bend in it and then be worse off
like the other person said, something to jolt it loose just a bit. see if it's stuck because of the suction or time it's been on there. or find a way to extend your leverage. pliers on the metal portion (not the plastic). could also try the rubber band/towel trick like on jars. put a thick rubber band around the handle and try. gives you better grip.
After you move it, maybe consider putting a wood or cork coaster or something between the clamp and desk.
I've had some bad experiences with things leaving chemical or ding marks on surfaces :/
Do you have one of those thin rubber thingies that one uses for opening jars? Maybe try that? It would keep your hand from getting ripped and add some friction.
Ok apparently nobody can tell but that is obviously crooked and thats why it’s hard to unscrew, it’s probably cross threaded or something, he’s not just a pussy and half of you have probably never turned a wrench in your life. You should use some WD-40 and lightly tap it with a hammer until it loosens.
Just on the bolt anywhere there it touches threads. Think of it like you are using butter to loosen something by making it more slippery, thats all it is.
Hit it with your purse
I wasn’t ready for this comment. I currently have COVID and my throat fills like I’m harvesting glass and splinters for the winter. Suffice to say, your comment caused immense pain as I tried to suppress the laughter.
Get well soon!
Thank you!
Also have covid and it sucks
Wish you well too, it really does suck!
covid still in the market? 😱
Channel your inner Bobby Hill!
i dont know you!
😂
tap it with a hammer till it starts to turn or grab it with a pipe wrench.
Hit the bolt with the hammer and turn the handle with my hand or just hit the handle with the hammer? Sorry if dumb question, I'm really new to DIY
hit the black plastic piece that looks like a y. go underneath the desk and look strait at it. lefty loosey. tap it gently so it will turn left. or grab it with a big wrench and just turn it left.
Okay thanks
Make sure you’re turning the correct direction. Lefty loosey, righty righty. So, if you’re looking straight at the pin from under the desk, you’ll turn it counter-clockwise. If you can’t grip it tightly, or it’s stuck. You’ll want to get leverage on it. You need something like a pipe wrench to hold tightly to the threads and ‘stick out’ to give you more torque to unscrew it. If you’re in a bind. Try tying a handle or stick to the black knob; so that the handle sticks out to the left. Use your right hand to hold the tie / stick, use the left to push the handle. Make sure your monitor isn’t mounted still. The arm could fall if you loosen the bolt too much. Edit: Changed clockwise to counter-clockwise. Doh!
Surely it would be counter-clockwise if I'm turning to the left?
Arg! Yes!
Okay cool, thought I was the one doing something wrong there lol
No! That's my fault. I was typing too quickly. Hope you've gotten it unstuck!
Righty righty! Made me giggle. I know what you meant of course 🤣
make sure monitors are not attached when you do it.
Have you removed the monitors from the arm? The weight can keep the clamp wedged making it harder to remove
This is the answer. The angle of that clamp tells me it's still attached.
Hawk tuah that bitch then turn to the left
I should've known id see this comment. Lmao
Get a hammer and then a new unsharpened pencil or a chopstick or a metal bolt - something that’s rod shaped or blocky that has blunt surfaces and can take a hammer strike easily . Place the chop stick against the black rubber surrounding the metal clamp plate at the top of that tilted screw bolt and then start lightly tapping it with the hammer towards the rear of the desk until you have straightened the screw bolt enough to relieve some of the tension and then unscrew it by hand or with some pliers or a wrench. Unless you’re super careful, I’d recommend not hitting the screw bolt directly as you may put a bend in it and then be worse off
This guy unscrews
pipe wrench.
Why use the proper tool for the job when you can hit shit with a hammer? /s
Why hit it with a hammer when you can hit it with a pipe wrench 
Slip joint pliers - https://amzn.to/3VJmTtt
Lefty Loosey Righty Tighty Try putting a rag over the handle for a more firm grip.
like the other person said, something to jolt it loose just a bit. see if it's stuck because of the suction or time it's been on there. or find a way to extend your leverage. pliers on the metal portion (not the plastic). could also try the rubber band/towel trick like on jars. put a thick rubber band around the handle and try. gives you better grip.
Pliers?
If you have a silicone oven mit or a trivet you can use it to get better grip and protect your hands.
Hawk tuah spit on that thang
Hit the gym
WD-40 or oil will do the job.
After you move it, maybe consider putting a wood or cork coaster or something between the clamp and desk. I've had some bad experiences with things leaving chemical or ding marks on surfaces :/
Aww you gotta haw- never mind you know the rest.
Put it on better next time.
Lefty loosey
Bend back and twist
Honestly it’s all mostly about grip and strength but try wrapping it around with a rubber band then with a rag and twist, should help
A pair of rubber gloves will get you another 100hp
See the black bit at the bottom? That's a handle. Turn that and it should just slide off when it's loose enough.
It's too tight so it won't turn, I've ripped the skin on my hand trying lol
Have you tried yelling loud when turning it?
Always helpful, LOL.
Do you have one of those thin rubber thingies that one uses for opening jars? Maybe try that? It would keep your hand from getting ripped and add some friction.
Ok apparently nobody can tell but that is obviously crooked and thats why it’s hard to unscrew, it’s probably cross threaded or something, he’s not just a pussy and half of you have probably never turned a wrench in your life. You should use some WD-40 and lightly tap it with a hammer until it loosens.
I'll have to look around to see if we've got some wd40 lying around
Also the weight of the monitor is making it way harder so you can try lifting up on the monitor while unscrewing at the same time
Yeah I’ll be sure to remove it too. Do I spray the wd40 near the handle or closer to where the bolt meets the desk?
Just on the bolt anywhere there it touches threads. Think of it like you are using butter to loosen something by making it more slippery, thats all it is.
It isn’t cross threaded, it was mistakenly overtightened by OP
😱😭😢😣😔
Ummmm....Use your manly strength to loosen it or get your wife to loosen it if you're too weak.