Author Topic: 3D printing ( of knots ?)  (Read 12165 times)

xarax

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3D printing ( of knots ?)
« on: February 25, 2012, 02:41:03 AM »
   One of these days, we will be communicating by sending to each other 3D pictures of knots, and making 3D models of those knots with the help of 3D printers. I hope this will reduce excessive blah-blah, and misunderstandings that go on for ever...
   Read an interesting article about the newest 3D printing technologies.
https://www.protoparadigm.com/
This is not a knot.

SS369

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Re: 3D printing ( of knots ?)
« Reply #1 on: February 25, 2012, 04:12:49 AM »
Many examples of 3d "printed" knots out there. Here's another > http://forrest.stonedahl.com/img/3dprinted.jpg

Mrs Glenys Chew

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Re: 3D printing ( of knots ?)
« Reply #2 on: February 25, 2012, 08:46:17 AM »
Hi there,

The knot in Scott's picture looks vaguely familiar.  I'm not confusing with your post about helical bends, am I, Xarax?

:) Glenys
Mrs Glenys Chew
1 Corinthians 15:10

xarax

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Re: 3D printing ( of knots ?)
« Reply #3 on: February 25, 2012, 02:12:13 PM »
   The knot ( stopper ) shown at the front row of the table, is the third knot shown at (1). I call it "both bights, half-untwist to fig.8" knot", trying to describe verbally how we arrive from this knot to the fig.8 knot. Most people call it with another, wrong ( :)) name, that might be improved a little bid, as " 2 fig. 9 s knot" (  because it resembles the shape of two  9 s, each put in a point-symmetric configuration to the other ). They say that, the retraced knot of it makes a very secure bend, more secure than the retraced fig. 8 bend. While this claim sounds reasonable, judging from the more convoluted and wider curves that the standing parts follow in this knot, I am not sure that it is supported by extensive experimental evidence. And I am sure that it is not tested against all different dressings of the retraced fg. 8 bend, shown at (2). I believe it is used, as a bend, in caving and canyoning, because the lines are wet, muddy and get very slippery in those environments. I do not know how people prefer to dress it at those situations - like the knot shown at the first attached picture, or the same knot, dressed differently, shown at the second attached picture, or in any other way...
   Now, one can, indeed, see the "Helical bend" shown at (3) as a sub-set, so to speak, of a retraced knot as the 3D printed one, shown in the picture. As I have said there, this was not the path I have followed to arrive at this bend, not at all. However, it is interesting to start from the complete retraced knot (shown in the attached pcture) , and try to figure out how we can simplify it, omitting some parts or modifying some others.  For some more convoluted bends, that can possibly be used with/on very slippery materials, see (4).

1. http://igkt.net/sm/index.php?topic=3790.msg22179#msg22179
2. http://igkt.net/sm/index.php?topic=2198
3. http://igkt.net/sm/index.php?topic=3797.0
4. http://igkt.net/sm/index.php?topic=3668
« Last Edit: February 25, 2012, 02:30:25 PM by xarax »
This is not a knot.

SS369

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Re: 3D printing ( of knots ?)
« Reply #4 on: January 18, 2013, 12:12:35 AM »
A link to interesting new software. Includes the ability to print 3d.
http://leonar3do.com/en/products


struktor

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Re: 3D printing ( of knots ?)
« Reply #5 on: March 20, 2013, 12:29:09 AM »
http://www.youtube.com/watch?v=r05gjLfDX2E

3Doodler is the world's first and only 3D Printing Pen.
Using ABS plastic (the material used by many 3D printers),
3Doodler draws in the air or on surfaces.
It's compact and easy to use, and requires no software or computers.
You just plug it into a power socket and can start drawing anything within minutes.
« Last Edit: March 20, 2013, 12:32:02 AM by struktor »

Sweeney

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Re: 3D printing ( of knots ?)
« Reply #6 on: March 20, 2013, 10:03:54 PM »
3Doodler is the world's first and only 3D Printing Pen.

I WANT one!!

Barry

jallwine

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Re: 3D printing ( of knots ?)
« Reply #7 on: May 27, 2013, 05:25:42 PM »
Just stumbled on this post. I wanted to share the project I'm working on, which is an app that generates 3D models of Turk's heads for 3D printing. I don't have a website yet, but I regularly post to my facebook page about it: https://www.facebook.com/freakinsweetknots

In my latest post I generated a 6 sided Turk's head die:



I also have a shapeways shop which allows others to order the models that I've generated: http://www.shapeways.com/shops/freakinsweetknots

TomD

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Re: 3D printing ( of knots ?)
« Reply #8 on: July 14, 2013, 10:26:54 PM »
Hi, all,

There is an app called Knots 3D.  It's quite good.  Found it this morning on my iPhone.  It includes animation. 

xarax

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This is not a knot.



xarax

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Re: 3D printing ( of knots ?)
« Reply #12 on: May 27, 2015, 01:53:20 PM »
« Last Edit: May 27, 2015, 01:56:15 PM by xarax »
This is not a knot.

carlmayer

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Re: 3D printing ( of knots ?)
« Reply #13 on: October 17, 2015, 03:41:54 AM »
I wish I have known this one before in order for me to have better comprehensions now.. I love 3D printing, yet my idea is not that sufficient due to minimal expertise and fundings for materials and ideas. But still thanks to this, a whole lot of valuable stuff.