Matthias, I would have to say that I have learned more woodworking tricks, and seen more neat woodworking things on your website and your videos, than on any other source. Love your dad's work, as well, especially those wooden hinges. A big Thank You.
I was tinkering around using pantographs in an automaton, years ago, and crossed 2 of the bars for the fun of it, and came up with something similar.
Instead of the hand just moving outward, now it sweeps back, as it extends.
In other words, what I'm wondering is what shape an arbitrarily chosen point on the lid traces out in space as the chest is opened and closed. Clearly, the connection points trace out circles, but it's less clear what curves the other points on the lid describe in space. It's more a mathematical question than a wood-working one, though.
Well, it's a four bar linkage. The points are defined by the motion of the four bar linkage. That's the simplest explanation. You could write a big equation, but describing it as a four bar linkage is the most straightforward.
I'd already worked that out, but "four-bar linkage" is just a description, not an answer. In fact, for any point on the lid, movement is described as the locus of points shared by two two-bar linkages. My immediate thought was that the locus must be a hypotrochoid, but then I realised that the angular rotation of the generating circle probably isn't constant. I was just wondering if anyone knew what the locus is, but, as you said, I'll have to work out the equation myself!
Nice job letting slam shut the first time ya went to close it....:-)
ZipSnipe 1 week ago
Not that big of a deal... Pretty basic mechanics...
chopperboi89 3 weeks ago
Matthias, I would have to say that I have learned more woodworking tricks, and seen more neat woodworking things on your website and your videos, than on any other source. Love your dad's work, as well, especially those wooden hinges. A big Thank You.
Bisbonian 3 weeks ago
This would make a great Artists, carry-all, come Easel. I want one !
jazzmanzoot 3 weeks ago
I like your demonstrations for mere mortals like me !
10OZDuster 1 month ago 6
DID YOU MAKE THIS ,VERY NICE
Tomsouthrock 1 month ago
Very cool how you made a working model of how he "hinge" works so we could see it. Thanks
platinumplusenter 1 month ago
Die Deutsche sind klug!
johannas58 1 month ago
That's impressive.
Bear5177 1 month ago
Nice mechanical design. Especially keeping the pivots out of the same plane. Nice Job!
LarryDouglasProDev 2 months ago
Fascinating mechanism! I fave this, gonna use this for a project!
Axbent 2 months ago
German quality product. :D We had those chests aswell back then in apprenticeship.
LKDesign 3 months ago
y cup holder in my 03 camry is like that
slinky211 3 months ago
Just for some extra info i found who makes this chest its a german company called ece.
ecemmerich-com/images/ece_katalog_07_english.pdf padge 22
ecemmerich-com
replace the lines - with a dot .
bartos321 4 months ago
Comment removed
bartos321 4 months ago
kinda reminds me of a Norwegian billfold
brickman409 6 months ago
I WANT ONE
koop39 7 months ago
What is this type of hinge called
JoshMadMagicMan 1 year ago
@JoshMadMagicMan Its called the "some genius thought of it but it doesn't have a name yet" hinge.
3nasacova 4 months ago in playlist More videos from Matthiaswandel
Man you really make me love woodworking :)
kikine05 1 year ago
thats like the cup holder in the middle of my dads 2004 camry
slinky211 1 year ago
you should build one!!!!
futuredirectorwanna 1 year ago
Beautiful!
I was tinkering around using pantographs in an automaton, years ago, and crossed 2 of the bars for the fun of it, and came up with something similar.
Instead of the hand just moving outward, now it sweeps back, as it extends.
bearhedded 1 year ago
i need to make this in Lego !
TheDivineCellphone 1 year ago
Thanks for posting this. I agree w/ you, that is a very ingenious solution to a challenging problem.
I have designed and built linkage systems before & they are pretty tough to get just right.
deezynar 1 year ago
I'd like to see more about this chest. All the little compartments look pretty cool and a video or pictures about storage would be great. Thanks.
MrTocsik 1 year ago
Any idea what locus of the moving points is?
amylNRG 1 year ago
Could you clarify your question?
Matthiaswandel 1 year ago
@Matthiaswandel
In other words, what I'm wondering is what shape an arbitrarily chosen point on the lid traces out in space as the chest is opened and closed. Clearly, the connection points trace out circles, but it's less clear what curves the other points on the lid describe in space. It's more a mathematical question than a wood-working one, though.
amylNRG 1 year ago
Well, it's a four bar linkage. The points are defined by the motion of the four bar linkage. That's the simplest explanation. You could write a big equation, but describing it as a four bar linkage is the most straightforward.
Matthiaswandel 1 year ago
@Matthiaswandel
I'd already worked that out, but "four-bar linkage" is just a description, not an answer. In fact, for any point on the lid, movement is described as the locus of points shared by two two-bar linkages. My immediate thought was that the locus must be a hypotrochoid, but then I realised that the angular rotation of the generating circle probably isn't constant. I was just wondering if anyone knew what the locus is, but, as you said, I'll have to work out the equation myself!
amylNRG 1 year ago
Very cool indeed!
wildwill1970 1 year ago
This would've been a great project for my design class last year.
ah well, the harmonograph table was a pretty fun alternative even if it's less practical ;)
gonepishing 1 year ago
Nice, a other A+
gabineteroserrano 1 year ago
Another new great feature we can all use. Thanks!
kode1303 1 year ago
Cool~
sooth15 1 year ago
Is the tool chest self-built or was it supplied by Würth?
timlandscheidt 1 year ago
The chest is not homemade.
Matthiaswandel 1 year ago
Can I buy products Würth Canada?
because I know only in Germany
wilhelmtell87 1 year ago
clever and ingenius
Azndragon732 1 year ago
That is cool.
bauisakim 1 year ago
Love your vids!! keep them coming
Robotron9000 1 year ago
Very informative and learning! Thanks for sharing!
javasmash 1 year ago
kickass!
Tripp393 1 year ago
awesome!!!!!!!!!
spikespegel87 1 year ago
Genius :D
bultasa0011 1 year ago