MASTER MODELLERS Modelling Approach

 From: AlexPolo 13 Sep 2017  (1 of 13)
 Hi all, Trying to create a shape similar to this have had various levels of success wondering if any Master Modellers have any pearls of wisdom on approach methods. Have tried blended lofts and subD skins Attachments:

 From: bemfarmer 13 Sep 2017  (2 of 13)
 8587.2 In reply to 8587.1 Hi AlexPolo I've seen this art piece in the past, but never figured out how to do it. A few years ago I saw it with a red face, and another color face, I think on an artist's site. There were a few more view angles. This recent post may be of help. The basic shape of the holes is that of parabolic cyclide, two parabolas with vertices passing through each others focus, with different size circles ( or spheres) centered on them, and lofted/swept. http://moi3d.com/forum/index.php?webtag=MOI&msg=8576.5 Do you have a link to the page with the art? - Brian

 From: AlexPolo 13 Sep 2017  (3 of 13)
 Hi Brian, Thanks for link will delve into it here is link to artists site. http://www.bridgesmathart.org/art-exhibits/jmm09/friedman.html

 From: bemfarmer 13 Sep 2017  (4 of 13)
 8587.4 In reply to 8587.3 There are 3+ views of the carved 10" X 6" limestone, of carved wood here: http://breezyhillturning.com/Minimal-surfaces/minimal-surface-turnings.html Copy of paper by professor Nat Friedman: http://math.unipa.it/~grim/21_project/21_charlotte_FriedmanPaperEdit.pdf Note that the soap film, figure 3d, has two holes with two surfaces, and the same trefoil knot is shown in figure 7c, as a two hole knot, which is formed by manipulating the one hole, one surface, trefoil knot of figure 7a. I have not found a surface evolver model yet. - Brian

 From: bemfarmer 13 Sep 2017  (5 of 13)
 8587.5 In reply to 8587.4 There is a tinfoil model of the knot here, as well as 1/4" copper wire. http://t.archive.bridgesmathart.org/1998/bridges1998-139.pdf So making such a trefoil knot in wire, and dipping it in soap and glycerin, popping the two holes, should give a physical model... Surface evolver is the other option... - Brian EDITED: 14 Sep 2017 by BEMFARMER

 From: bemfarmer 14 Sep 2017  (6 of 13)
 8587.6 In reply to 8587.5 The program for surface evolver, for a different sculpture, between an unknot and a trefoil, is explained here: https://www.thingiverse.com/thing:1559227 - Brian

 From: futagoza (STEFAN) 14 Sep 2017  (7 of 13)
 Looks like a mirrored version of Jotero's Yin Yang. :-) http://moi3d.com/forum/index.php?webtag=MOI&msg=5529.1 Regards Stefan Attachments:

 From: mkdm 14 Sep 2017  (8 of 13)
 8587.8 In reply to 8587.7 Hi Stefan! Wanderful model! Could you post the 3dm ? Thanks. - Marco (mkdm)

 From: futagoza (STEFAN) 14 Sep 2017  (9 of 13)
 8587.9 In reply to 8587.8 Sorry Marco, better not... Best regards Stefan

 From: mkdm 14 Sep 2017  (10 of 13)
 8587.10 In reply to 8587.9 OK. No problem. Bye. - Marco (mkdm)