Subject:
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Re: Problem with click hinge part(s)?
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Sun, 20 Jun 2004 17:22:46 GMT
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Viewed:
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7632 times
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In lugnet.cad.dat.parts, Chris Dee wrote:
> In lugnet.cad.dat.parts, Ross Crawford wrote:
> > In lugnet.cad.dat.parts, Chris Dee wrote:
> > > In lugnet.cad.dat.parts, Ross Crawford wrote: • <SNIP>
> >
> > OK Chris, I've gotta disagree here - I just measured a representative sample
> > of my click hinges, and the lugs are ALL closer to the top of vertical end
> > wall than the bottom. The position of the lug in your new version is
> > definitely incorrect. Whether thats a problem with the primitive or the
> > sub-part I don't know, but it definitely needs changing.
> >
> > ROSCO
>
> We are both partially right - but there is a generic problem with these parts.
>
> The important dimension is the position of the axis of rotation of the click
> hinge, relative to the brick. For the geometry to work this must be the same
> distance down (+y) from the top surface of the brick as it is across (+x) from
> the end of the brick.
>
> And this dimension needs to be 10LDu for the following configuration to work,
> which it does:
>
> 0 Untitled
> 0 Name: tr30386.dat
> 0 Author: MLCad
> 0 Unofficial Model
>
> 1 7 0 0 0 1 0 0 0 1 0 0 0 1 30386.DAT
> 1 7 60 0 -20 1 0 0 0 1 0 0 0 1 30386.DAT
> 1 7 40 -8 -10 1 0 0 0 1 0 0 0 1 3795.DAT
> 1 7 40 40 0 0 -1 0 1 0 0 0 0 1 30386.DAT
> 1 7 40 40 -20 0 -1 0 -1 0 0 0 0 -1 30386.DAT
> 0
>
> So the position of the click hinges are now correct in the revised s/30387s01 on
> the Parts Tracker.
>
> What is wrong (on all of these click hinge bricks) and why you see what you do,
> is the dimensions of the diagonal chamfer below the click hinges. These are 1LDu
> too large, decreasing the visible surface of the end wall confounding your
> measurements.
>
> I'm not sure how this slipped through the parts review process (especially as we
> have updated these all once already), but I'll work on the revisions and post
> here when I've something to show.
>
> Chris
New versions of the 1x4 parts are on the PT now
http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/30387.dat
http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=parts/s/30387s01.dat
Comments please, before I apply the same changes to the other parts.
Chris
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Problem with click hinge part(s)? [DAT]
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| (...) We are both partially right - but there is a generic problem with these parts. The important dimension is the position of the axis of rotation of the click hinge, relative to the brick. For the geometry to work this must be the same distance (...) (22 years ago, 20-Jun-04, to lugnet.cad.dat.parts)
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