Henry Segerman

henryseg

Artist

http://www.segerman.org
 
 Mathematician working in 3 dimensional geometry and topology.


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henryseg's
henryseg commented on Grid (stereographic projection) by henryseg
February 26, 2016
Grid (stereographic projection)
henryseg @cpabaraboo No - the minimum wall thicknesses are right around the same value for both WSF plastic and the cast metals. Particularly up at the top, the design is right up against those limits.
henryseg commented on Grid (stereographic projection) by henryseg
February 26, 2016
Grid (stereographic projection)
henryseg @cpabaraboo I just set it available in brass and bronze. I haven't tried it in these materials, but I think it should work well, since they are cast from a wax print. The stainless steel materials I think would be subject to too much distortion in the intermediate steps to work well.
henryseg commented on Hyperbolic paraboloid by henryseg
February 16, 2016
Hyperbolic paraboloid
henryseg @Alex_J8y_Feingold Incidentally, you might be interested in this workshop I'm co-organising: https://icerm.brown.edu/topical_workshops/tw16-1-im/
henryseg @Alex_J8y_Feingold Well, I was going to post a Python script, but this comment box destroys the formatting... email me if you're interested!
henryseg @Alex_J8y_Feingold I've always used the Mac version of Rhino, it's had Python working for years. I hear that a Mac version of Grasshopper is currently under development.
henryseg commented on Hyperbolic paraboloid by henryseg
February 16, 2016
Hyperbolic paraboloid
henryseg @MaxCooper67 Yeah, it's great to design geometry with code!
henryseg @MaxCooper67 I use Rhinoceros to make my designs, together with its Python scripting interface.
henryseg commented on Hilbert Curve by henryseg
January 4, 2016
Hilbert Curve
henryseg @Gregory3 Huh, I wonder if Shapeways started showing more digits recently. Odd that I would have said 4.4cm if this page says 4.44cm. In any case, the print is so flexible and springy, that a fraction of a millimeter doesn't matter much.
henryseg commented on Triple gear by henryseg
December 7, 2015
Triple gear
henryseg @Painmedicine1 I looked into this, for Shapeways' pilot project for interlinked metal parts. The problem is that the gear teeth come very close to each other, and so I suspect that they would fuse together. If there's a little fusing in plastic it's no problem to snap apart, but with metal you likely wouldn't be able to.
henryseg commented on Grid (stereographic projection) by henryseg
November 12, 2015
Grid (stereographic projection)
henryseg @swishgirl the issue is that standard lightbulbs are big - the effect only works well with a very small light source. Everything would be very fuzzy with an ordinary lightbulb.
henryseg commented on Grid (stereographic projection) by henryseg
September 25, 2015
Grid (stereographic projection)
henryseg @Oscelot The positioning of the light is very important to get the right effect - I think it would be very difficult to get it consistently right if it was held in with rubber bands.
henryseg commented on Grid (stereographic projection) by henryseg
September 25, 2015
Grid (stereographic projection)
henryseg @Oscelot I've thought about this, but the issue is that I don't know what kind of mount to build. If there were a specific LED light design then I could design for it...
Honeycomb (stereographic projection)
henryseg @joachim0 You'll want a very small LED with as wide a spread of angles as possible. I know these things exist, although I've never wired up one myself. Also you want to position the LED in the right position. I imagine this could be done with wires. If I were going to make it as a permanent fixture I would design the 3D print to include a mount that the LED can be attached to, although of course I can't do that without knowing what kind of LED to use.
henryseg commented on Figure 8 Knot by henryseg
January 1, 2015
Figure 8 Knot
henryseg @fischfluous There is a secret version of the program that allows export, you can ask the author Jack van Wijk for a link!
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