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Subject: 
Updated (again) Part: 3011.dat - Duplo Brick 2 x 4 & discussion
Newsgroups: 
lugnet.cad.dat.parts
Date: 
Fri, 5 Jan 2001 22:21:05 GMT
Viewed: 
1013 times
  
In my clean, no local modifications installation of the LDraw Parts
Library, the scala stud file is stud5.dat.

I too have stud5.dat as the Scala stud.

As I further cleaned up the 2x2 and 2x4, something else jumped out at me
that I hadn't seen before because the part was further off in other areas.
Tore's top stud looked good to me at first, but then as I kept looking at it
the thickness of the rim began to bother me more.  It accurately models the
thickness of the older Duplo studs- as I said before, the bottom stud of a
System piece will bind into the old Duplo studs (try a round 1x1, for
example).  But the newer ones don't bind.

I realized that using the ring3 primitive instead of the ring2 primitive as
the basis for the stud would more accurately model newer Duplo pieces.
Scale it up so that the outside matches the same OD as the studdu2.dat
(since the OD was perfect), but make the inside 18 LDU instead of 16.
Again, try putting a round System 1x1 into a newer Duplo stud- the base fits
in but doesn't bind, and yet the piece itself won't fit inside (it is 20 LDU).

As it happens, we already have a stud tube that uses the ring3 primitive-
stud4.dat.  If you scale the x and z by 1.5 and scale the y by 2.75, you
have a great Duplo stud.  I'd recommend that we model Duplo studs this way
if we are doing newer pieces and use the studdu2.dat (aka stud7.dat?) part
if modeling older pieces.  We should probably have a corresponding bottom
tube with crenelations on it for older bricks as well.  This piece wouldn't
scale well vertically, so it should probably be a cap that is placed on the
end of a tube stump.  On the other hand, doing multiple generations of Duplo
pieces seems kind of silly considering the demand for Duplo...

Anyway, here is the new Duplo Brick  2 x  4.  It is now 3011, as that's the
number I found on the bottom.  The changes from yesterday are:
  Now using stud8.dat instead of stud4du.dat
  Now using stud4.dat instead of studdu2.dat
  Lines and quads for the inner ribs are grouped together

Stud8.dat is exactly the same as the stud4du.dat that I posted yesterday- I
simply renamed the file.  As it turns out, by complete accident I already
had it at 4 LDU tall (I based it off of the stud4.dat which already was 4).

For reference, here is the primitive I used for the bottom stud:
  http://news.lugnet.com/cad/dat/parts/primitives/?n=125
Remember to rename your copy as stud8.dat!

Attached is my new 2x4- I'd love some comments on it!  I'll post my 2x2 in a
minute as well.

--
Tony Hafner
www.hafhead.com


0 Duplo Brick  2 x  4
0 Name 3011.dat
0 Author: Tony Hafner
0 Unofficial part

1 16 40 4 0 1 0 0 0 -10 0 0 0 1 stud8.dat
1 16 0 4 0 1 0 0 0 -10 0 0 0 1 stud8.dat
1 16 -40 4 0 1 0 0 0 -10 0 0 0 1 stud8.dat

1 16 0 48 0 76 0 0 0 -44 0 0 0 36 box5.dat

4 16 80 48 40 76 48 36 -76 48 36 -80 48 40
4 16 -80 48 40 -76 48 36 -76 48 -36 -80 48 -40
4 16 -80 48 -40 -76 48 -36 76 48 -36 80 48 -40
4 16 80 48 -40 76 48 -36 76 48 36 80 48 40

1 16 0 48 0 80 0 0 0 -48 0 0 0 40 box5.dat

1 16 60 0 20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 20 0 20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 -20 0 20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 -60 0 20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 60 0 -20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 20 0 -20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 -20 0 -20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat
1 16 -60 0 -20 1.5 0 0 0 2.75 0 0 0 1.5 stud4.dat

1 16 60 4 -34 2 0 0 0 43 0 0 0 2 box4-1.dat
1 16 20 4 -34 2 0 0 0 43 0 0 0 2 box4-1.dat
1 16 -20 4 -34 2 0 0 0 43 0 0 0 2 box4-1.dat
1 16 -60 4 -34 2 0 0 0 43 0 0 0 2 box4-1.dat
1 16 60 4 34 2 0 0 0 43 0 0 0 -2 box4-1.dat
1 16 20 4 34 2 0 0 0 43 0 0 0 -2 box4-1.dat
1 16 -20 4 34 2 0 0 0 43 0 0 0 -2 box4-1.dat
1 16 -60 4 34 2 0 0 0 43 0 0 0 -2 box4-1.dat
1 16 -74 4 -20 0 0 2 0 43 0 -2 0 0 box4-1.dat
1 16 74 4 -20 0 0 -2 0 43 0 2 0 0 box4-1.dat
1 16 -74 4 20 0 0 2 0 43 0 -2 0 0 box4-1.dat
1 16 74 4 20 0 0 -2 0 43 0 2 0 0 box4-1.dat

1 16 0 4 26 0 0 1 0 34 0 -10 0 0 box3#8p.dat
2 24 -1 38 36 1 38 36
2 24 1 38 36 1 4 36
2 24 -1 38 36 -1 4 36
2 24 -1 38 16 1 38 16
2 24 1 38 16 1 4 16
2 24 -1 38 16 -1 4 16

1 16 0 4 -26 0 0 1 0 34 0 -10 0 0 box3#8p.dat
2 24 -1 38 -36 1 38 -36
2 24 1 38 -36 1 4 -36
2 24 -1 38 -36 -1 4 -36
2 24 -1 38 -16 1 38 -16
2 24 1 38 -16 1 4 -16
2 24 -1 38 -16 -1 4 -16

1 16 20 4 0 4 0 0 0 34 0 0 0 1 box3#8p.dat
2 24 16 38 -1 16 38 1
2 24 16 38 1 16 4 1
2 24 16 38 -1 16 4 -1
2 24 24 38 -1 24 38 1
2 24 24 38 1 24 4 1
2 24 24 38 -1 24 4 -1

1 16 -20 4 0 4 0 0 0 34 0 0 0 1 box3#8p.dat
2 24 -24 38 -1 -24 38 1
2 24 -24 38 1 -24 4 1
2 24 -24 38 -1 -24 4 -1
2 24 -16 38 -1 -16 38 1
2 24 -16 38 1 -16 4 1
2 24 -16 38 -1 -16 4 -1

0



Message is in Reply To:
  Re: New Part: 3001_d.dat - Duplo Brick 2 x 4
 
(...) I hope that 'someone' wasn't me! (...) In my clean, no local modifications installation of the LDraw Parts Library, the scala stud file is stud5.dat. (...) Yep, I almost posted that those needed to be done, but then I realized that they could (...) (24 years ago, 5-Jan-01, to lugnet.cad.dat.parts)

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