Subject:
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Re: Lego dimensions
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Newsgroups:
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lugnet.cad
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Date:
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Tue, 5 Apr 2005 00:54:53 GMT
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Viewed:
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1454 times
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In lugnet.cad, Darrell Urbien wrote:
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In lugnet.cad, brent skadan wrote:
so I would not have
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to break out the calipers and measure the darn things.
Brent
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Just from my experience doing this stuff, you’ll want to make a range of
parts with varying “fudge factors”.. At least on the RP machines I’ve tried,
the accuracy of these machines at those small dimensions are just not
“repeatable” enough.. Once you figure out which way your machine will print,
I suppose you could nail in the correct dimensions.. You also have to
remember, these things were designed to make prototypes, not finished parts,
per se. You may be able to crank up the resolution though..
What kind of machine are you using? We have an older Stratasys at my
workplace, and chipping out the support material on LEGO parts is not a chore
I would wish on my worst enemy. The water-soluable support stuff is good
though - if you want do a search in the parts group to see the RP stuff a
bunch of us made earlier. I’m lusting after one of the EDEN Polyjet machines,
but my Governator says no way...
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We have a Dimension BST by Stratasys -- though it is brand spankin new. I was
told it has a resolution of .21mm which should work just fine for a Lego
connection. I also have the option of using a ZCorp powder cast printer which
actually has amazing resolution, but requires that a mould is made of the powder
cast part then do a plastic pour -- a technique I am not terribly good at.
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Message is in Reply To:
 | | Re: Lego dimensions
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| In lugnet.cad, brent skadan wrote: so I would not have (...) Just from my experience doing this stuff, you'll want to make a range of parts with varying "fudge factors".. At least on the RP machines I've tried, the accuracy of these machines at (...) (20 years ago, 4-Apr-05, to lugnet.cad, FTX)
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