 | | How to make a perfect octagon or hexagon? —Joe Strout
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| | | I'm trying to make a largish (20 cm across or so) octagon or hexagon out of technic parts. I thought this would be easy, because I believed that the bent technic beams (e.g. (URL) 32348>) had a 135-degree angle, or at least some angle that would (...) (17 years ago, 10-Dec-07, to lugnet.technic, FTX)
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| | | | | Re: How to make a perfect octagon or hexagon? —Jonathan Wilson
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| | | | | Your best bet would be the #4 angle connector, its a 135 degree angle. (17 years ago, 10-Dec-07, to lugnet.technic)
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| | | | | Re: How to make a perfect octagon or hexagon? —David Eaton
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| | | | | (...) It would appear that they're approximately 126.8698976 degrees. That's from approximating some angles and noticing that what I think they were trying to do was to create the geometry such that a 3-4-5 right triangle was possible. DaveE (17 years ago, 10-Dec-07, to lugnet.technic, FTX)
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| | | | | Re: How to make a perfect octagon or hexagon? —Kevin L. Clague
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| | | | | (...) The tri-blade is great for hexagons.... (URL) (17 years ago, 10-Dec-07, to lugnet.technic, FTX)
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| | | | | Re: How to make a perfect octagon or hexagon? —Brian Davis
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| | | | (...) Try approaching it in steps. Can you make an equilateral triangle out of Technic beams? Don't worry about making the angles rigid, just make a structure with three equal-length sides, connected near the corners (connected with something that (...) (17 years ago, 10-Dec-07, to lugnet.technic)
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| | | | | | Re: How to make a perfect octagon or hexagon? —Edward Welsh
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| | | | | (...) A 12-12-17 triangle is very nearly right, and has angles of about 44.9 degrees. I used four of them in making a stop sign: (URL) Note that all eight corners are nicely studded down. Joe and Brian wrote: (...) Well whaddaya know! I'd always (...) (17 years ago, 10-Dec-07, to lugnet.technic, lugnet.edu, FTX)
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| | | | | | | Re: How to make a perfect octagon or hexagon? —Brian Davis
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| | | | | | (...) Yeah, about 5 minutes after I submitted that I realized just how stupid I've become as of late (I plead mercy due to a very nasty sinus infection... but dang it, I should have caught that even if I was unconcious). What will make it even (...) (17 years ago, 10-Dec-07, to lugnet.edu)
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| | | | | | Re: How to make a perfect octagon or hexagon? —Scott Lyttle
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| | | | (snip) and the very rare but handy "Technic bush with 3 axles" (URL) (yeah, from just one set it (...) That particular piece is showing up in more sets: The Batman Copter with Scarecrow's bi-plane has three of those pieces in the set, and the new (...) (17 years ago, 10-Dec-07, to lugnet.technic)
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| | | | | | Re: How to make a perfect octagon or hexagon? —Brian Davis
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| | | | (...) Good to know; I loved it from the first time I saw it, but the rarity was a problem. (...) I had an instant use for that piece as well - flip-flop gates for a working model of Digi-comp II: (URL) when I eventually get time to compile it... the (...) (17 years ago, 10-Dec-07, to lugnet.technic)
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| | | | | | Re: How to make a perfect octagon or hexagon? —Joe Strout
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| | | | | Thanks -- making a hexagon out of equilateral triangles occurred to me after submitting my post, but I really had no idea what was going on with the funny angle, so this has been very educational. As always, this is one of the most helpful and (...) (17 years ago, 10-Dec-07, to lugnet.technic)
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| | | | | | Digicomp II —Alexander Holroyd
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| | | | (...) Wow! I for one can hardly wait to see the video of this. And I would love to see more explanation and construction details too! cheers, Alexander (17 years ago, 10-Dec-07, to lugnet.technic)
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| | | | | | Re: Digicomp II —Brian Davis
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| | | | (...) Well, I finally got the video put together, with some narration to explain a little bit of what's going on. I wish I could put it on YouTube a bit bigger (it's all 640x480, but YouTube seems to compress it down). (URL) sorry about the (...) (17 years ago, 14-Dec-07, to lugnet.technic)
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| | | | | | Re: Digicomp II —Geoffrey Hyde
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| | | | | "Brian Davis" <brdavis@iusb.edu> wrote in message news:Jt21tp.nGo@lugnet.com... (...) rectangle expanding into an empty rectangle in the bottom right corner of the YouTube play bar. Clicking this will allow you to enter full-screen mode. (Esc (...) (17 years ago, 15-Dec-07, to lugnet.technic)
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| | | | | | Re: Digicomp II —Alexander Holroyd
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| | | | (...) understand how some of it works... What does the lower layer do? Is it just concerned with 2's complementing and clearing the accumulator? cheers, Alexander (17 years ago, 15-Dec-07, to lugnet.technic)
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| | | | | | Re: Digicomp II —Brian Davis
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| | | | (...) I'd love to claim full credit, but I really have to say I never would have thought this was possible until I had read about the original. The patent for the original Digi-comp II is really interesting - the one patent contains the idea for (...) (17 years ago, 16-Dec-07, to lugnet.technic)
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| | | | | | Re: Digicomp II —Alexander Holroyd
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| | | | (...) Quite so. But an all-LEGO implementation is still a remarkable achievement. The patent for (...) It would be great to see a version of Dr Nim too. This might also be more of a manageable project for those with limited time and resources! Then (...) (17 years ago, 10-Feb-08, to lugnet.technic)
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| | | | | | Re: Digicomp II —Brian Davis
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| | | | (...) Thank you. I had some comments from the students who built a K'nex computer a while back, and one of the things he complemented me on was staying "pure" to the medium I selected, and not to use heavier ball bearings etc. I guess purism in that (...) (17 years ago, 10-Feb-08, to lugnet.technic)
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