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 CAD / LDraw Files / Parts / Primitives / 187
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Subject: 
Re: New primitive: Ring 2 Small Hole
Newsgroups: 
lugnet.cad.dat.parts.primitives
Date: 
Mon, 18 Mar 2002 22:00:56 GMT
Viewed: 
1542 times
  
In lugnet.cad.dat.parts.primitives, Ildefonso Junior Zanette writes:
this is the ring used in the new kind of stud that can be found in this piece:
http://www.brickshelf.com/cgi-bin/gallery.cgi?i=131214
http://www.peeron.com/inv/parts/30179

Those don't look like the same piece.

0 Ring 2 Small hole
0 Name: ring2a.dat
0 Author: Ildefonso Junior Zanette
0 Unofficial Subpart

There's a problem with this.  In LDraw-world, "Ring X" is shorthand for "a
ring with inner radius = X and outer radius = (X+1)".  Your ring has IR=1/3
and OR=1, right?  I don't think there's any way a ring can be constructed so
that 3*IR = OR *and* IR+1 = OR.  But, your ring *can* be constructed from
two other ring p-files:

1 16 0 0 0 0.16667 0 0 0 1 0 0 0 0.16667 ring2.dat
1 16 0 0 0 0.33333 0 0 0 1 0 0 0 0.33333 ring2.dat

Which is my recommended way to construct the ring on the part you noted.

Steve



Message has 1 Reply:
  Re: New primitive: Ring 2 Small Hole  [DAT]
 
(...) I didn't know this. Thanks for explain! (...) I used the ring1 to construct the ring: 1 16 0 0 0 2 0 0 0 1 0 0 0 2 ring1.dat 1 16 0 0 0 2 0 0 0 1 0 0 0 2 ring2.dat because if I scale down the ring2.dat, the thickness of the border will be 1/2, (...) (23 years ago, 18-Mar-02, to lugnet.cad.dat.parts.primitives)

Message is in Reply To:
  New primitive: Ring 2 Small Hole  [DAT]
 
this is the ring used in the new kind of stud that can be found in this piece: (2 URLs) Ring 2 Small hole 0 Name: ring2a.dat 0 Author: Ildefonso Junior Zanette 0 Unofficial Subpart 4 16 0.3333 0 0 0.3079 0 0.1276 0.9239 0 0.3827 1 0 0 4 16 0.3079 0 (...) (23 years ago, 18-Mar-02, to lugnet.cad.dat.parts.primitives)

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