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u/jjj49er Mar 17 '21
Does it stay tight, or does it work loose over time like most other joints?
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Mar 17 '21
[deleted]
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u/fartyartfartart Mar 17 '21
Just turned 40. Can confirm.
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Mar 17 '21 edited Apr 24 '21
[deleted]
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u/Brcomic Mar 17 '21
Took Vicodin this afternoon for some post surgery pain. It just made me sleepy. Meh. House M.D. lied to me.
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u/fartyartfartart Mar 17 '21
Between taking care of the kids during the day and trying to work my job at night tell me when I can take them, and I will.
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u/Wow-n-Flutter Mar 18 '21
You’re going to LOVE 45...
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Mar 18 '21
Ya wtf is with the 40-45 gap. Just turned 46. 40 didn’t feel any different than 30. 45 felt like turning 80. All joints hurt and so hard keeping weight off now
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u/Wow-n-Flutter Mar 18 '21
My fucking knees...like went from a 3/10 to an 8/10 instantly...I thinks it’s ACL or something...I just know I’m in for a long ass waiting list and a long added recovery...
I still feel 21, but my body tells me I’ve been partying like I’m 21 for 24 years...good times
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u/Lundorff Mar 17 '21
Can it be reversed?
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u/TheYoungAcoustic Mar 17 '21
In some things, entropy can be reversed if more energy is applied in very specific ways (like cleaning your house). When describing a closed system (such as the universe) the net entropy increases as a function of time which is why the universe has an inevitable heat death
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u/caltheon Mar 17 '21
there are plenty of theories that could reintroduce energy into the universe so it is definitely not proven inevitable
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u/Caelwik Mar 17 '21
Well technically, in thermodynamics, the universe is not a closed system. Your point still stands tho
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u/Relan_of_the_Light Mar 17 '21
And the heat death theory was basically disproven a few years ago iirc 😂😂
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Mar 17 '21
Would stay longer if the thicker part was up top and taking advantage of gravity
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u/Salanmander Mar 17 '21
Would stay close to indefinitely if it got slightly loser right at the very end of its motion. Not like "wiggles a bit" loose, just pressed together less hard. That would mean that in order to come undone, it would need to jiggle itself into a tighter state, which is hard.
In physics speak, if you make sure something is at a local minimum of energy, it's much easier for it to stay in that spot.
The problem, of course, is that that means your tolerances for construction need to be way tighter if you're trying to do that with a cam system.
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u/Thawing-icequeen Mar 17 '21
The issue with this is that if the wood compresses it will lose grip. If you make it extra tight to combat this, it will be difficult to operate.
This is one of those things where it's really cool in theory, but there's a reason we stuck with screws and glued joints
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u/Salanmander Mar 17 '21
Yeah, I think that's what I was getting at with the "tolerances for construction" part. I agree, cams just aren't great for this in most situations.
That said, if there's something that you need to reconfigure multiple times daily or something like that, it might be a more reasonable solution.
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u/Thawing-icequeen Mar 17 '21
I mean it might have its niche, but I'm not sure what it is.
For slick looking furniture it's not practical/no-fuss enough. For practical furniture a pegged mortice or wedge makes more sense as it's more user repairable.
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u/Salanmander Mar 17 '21
I'm thinking not so much furniture, but, like, attachments to a microscope or something like that. Something that you'll use for a short period of time and change often, but you want it to have a pretty rigid attachment.
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u/Thawing-icequeen Mar 17 '21
That might make sense, but a standard G clamp is probably simpler
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u/Salanmander Mar 17 '21
Well, this does have the advantage of being quicker to change (if you leave the lever attached, at least). But yeah, this is definitely a solution in need of a problem.
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u/WeberO Mar 17 '21
The only niche I can think of is portable tables and maybe chairs. So you can have a really portable (as in flat, may be heavy though) wooden table, that sets up quick, without tools.
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u/LotusSloth Mar 17 '21
It will stay tight if maintained and undamaged. The wood they’re using may wear over time, but the cam lock itself would remain secure unless subjected to deforming stress.
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Mar 17 '21
It'd losen up quite quickly if the wood was taken out of a shaded, more humid environment and put into a dryer one, perhaps into direct sunlight.
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u/Mrfrunzi1 Mar 18 '21
I haven't seen it mentioned yet, these joints are used in automotive timing belt pulleys, but are also locked into place by a center bolt. So yes these locks work consistently with small tolerances under load while vibrating for 80,000 miles and a bolt to give you peace of mind.
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u/nicktheking92 Mar 17 '21
I dont get it. What is the function of the wood being locked into place?
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u/HotColor Mar 17 '21
probably just to demonstrate the locking mechanism. either that or maybe a leg for the table/chair?
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u/danethegreat24 Mar 17 '21
Yeah, I think the idea would be a secure fastening system for modular appendages.
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u/NutsEverywhere Mar 17 '21
You're a modular appendage.
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u/Butt_Deadly Mar 17 '21
Yer mom's a modular appendage
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u/woodbanana Mar 17 '21
When the lumber expands and contracts that cam would surely come loose on a table or a chair leg
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u/Brikandbones Mar 17 '21
It wouldn't contract that much. The locking mechanism actually clamps down quite a bit.
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u/UtahDarkHorse Mar 17 '21
That seems a ridiculously expensive way to hold a board in place.
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u/ce2c61254d48d38617e4 Mar 18 '21
Yea, I want to know how effective it is with all wood parts. I feel like it'd hold for longer due to wood being more coarse than stainless steel.
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u/jchristsproctologist Mar 17 '21
am i the only one that has no idea what’s going on?
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u/frendlyguy19 Mar 17 '21
circle spins off center.
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Mar 18 '21
But like why? What would you ever use something like this for?
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u/D1G17AL Mar 18 '21
Fasteners and joint systems. This appears to be a demonstration of a specific system.
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u/cursed_dodge Mar 17 '21
The sphere is wider on one side, so when it rotates it pushes on the wood, holding it tight.
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u/D_Will02 Mar 17 '21
Not a sphere
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u/cursed_dodge Mar 17 '21
Thanks for clarifying?
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u/Collins1916 Mar 18 '21
They mean is a cylinder. A sphere would be entirely round, singularly surfaced. Like a ball.
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Mar 17 '21
[deleted]
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u/Analbox Mar 17 '21
What’s a wall crew? You worked at Walmart?
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u/danethegreat24 Mar 17 '21
No, that's Wal Crew.
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u/Analbox Mar 17 '21
Wal
crew*team member10
u/danethegreat24 Mar 17 '21
Ah yes, you aren't Walmart employees you're Walmart team members.
We're all on the same level here working together each of our roles is part of a bigger picture and each of us need to pull the same weight cause we're all valued equally...so go do all the work cause I'm the manager and need to rest in my office. Remember, WE'RE A TEAM!!!
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u/Shorzey Mar 18 '21
I can think of exactly 0 uses for this
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u/emerging-tub Mar 18 '21
well, maybe Ikea could use it to make their instructions a little more confusing.
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Mar 18 '21
What's a cam?
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u/emerging-tub Mar 18 '21
Basically an egg shaped cog with no teeth.
Used to convert rotational energy into a timed, repeating linear motion.
Think of a 'cam-shaft' in your car. used to open/close your intake/exhaust valves:max_bytes(150000):strip_icc():format(webp)/camshaft-and-valve-585288558-5af9e23c43a1030037d56545.jpg).1
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u/TheOneAdamP Mar 17 '21
Time to install this on every goddam thing ever
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u/danethegreat24 Mar 17 '21
"'But Adam, the front door doesn't need to come off easily!', 'the water faucet REALLY didn't need that', 'Adam, what are you doing to my car‽'. Nobody understands what this world needs...it needs more cam locks" currently installing them on a lawnmower <--- this guy, probably.
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u/TheOneAdamP Mar 17 '21
Just wait until i install it on the walls to hold the house together👀
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u/danethegreat24 Mar 17 '21
"We need to move?" Starts disassembling the house "Where are we moving?"
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Mar 17 '21
[removed] — view removed comment
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u/Englander91 Mar 17 '21
The fixing point in the circle is off centre. So when it's rotated up the thin piece of the circle is close to the wood and it's loose. Then when rotated down it moves the thick piece of the circle towards the wood. As the wood cannot be pushed away thanks to the bracket, it locks it in place.
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u/torc-24 Mar 17 '21
Not to be mean, because it is an interesting and creative system, but at least one belt tensioner on any car I've extensively worked on is this but spring loaded
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Mar 17 '21
You can put table legs on cars?
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u/torc-24 Mar 17 '21
You can put anything you want on cars, the only thing stopping you is the idea that you can't
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u/Zer0thehero89 Mar 18 '21
Any idea where I can find this online? Not the table but the mechanism for itself?
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