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In lugnet.parts, Jason Spears wrote:
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Nope, that wasn’t me. I’m a drafter (1). I haven’t been to any brick cons
yet, although I’m 95% sure I’ll be at Brickfest in two weeks. But.. Hi
yourself.
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Ah, oh well. Nice to e-meet you.
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We have 2 FDM machines and 2 SLS ones. I’d have to go down there to get model
numbers.
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That’s neat. I just spent a week at an RP conference, so the alphabet soup is
still pretty fresh in my mind. I actually know what those acronyms stand for!
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We use Pro/E, so I was justing planning to model the parts in mm and then
export to stl. I’ve already got every basic brick modeled (2) plus a few
fantasy bricks that MichLUG was brainstorming. Most parts that Tim would want
would be easy enough to model up. (Bionicle parts could be tricky.) That
lattice piller could be interesting, seeing as I don’t even own one, I might
have to guess at some of the thicknesses, but the 2x2x5 is pretty basic.
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Oh, OK, you’re doing it the “old fashioned way” - you’re modeling them from
scratch! Yeah I started out doing that too, then I latched onto the LDraw
bandwagon - using the LDU to “guesstimate” dimensions. It was easier to teach my
students that way, as they didn’t have to learn how to measure, LOL. Of course
the problem with doing that is when you go back to making real parts on an RP or
CNC machine, the Ldraw dimensions aren’t accurate enough.. and sometimes they’re
just plain wrong.
Tim, if you’re reading this, this is a problem with driving RP with LDraw data -
the units don’t exactly match up, at least not with the conversion factor I
used. With parts created just for graphical purposes, you’d never see this
error, but with certain kinds of RP you have to be aware of it and/or adjust
dimensions accordingly. Jason models completely independently of LDraw, like a
lot of other commercial CAD/CG users. Theoretically, he stands a better chance
of making RP parts that fit like LEGO without a lot of trial and error.
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(2) Family model, just type in how wide, by how long, by how tall
and it regenerates into the brick you want.
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Hey, I did one of those with configurations in SolidWorks. You should bring it
to BF and show Tim, he’d get a kick out of it.
Darrell
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Message is in Reply To:
 | | Re: STL File for 3D Printing
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| (...) Nope, that wasn't me. I'm a drafter (1). I haven't been to any brick cons yet, although I'm 95% sure I'll be at Brickfest in two weeks. But.. Hi yourself. (...) We have 2 FDM machines and 2 SLS ones. I'd have to go down there to get model (...) (20 years ago, 2-Aug-04, to lugnet.parts, lugnet.parts.custom, FTX)
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