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 CAD / MLCad / 2084
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Subject: 
Re: What about a LEGO TECHNIC tutorial
Newsgroups: 
lugnet.cad.mlcad
Date: 
Mon, 6 Jun 2005 17:39:32 GMT
Viewed: 
10508 times
  
  One problem with technic designes is that axis of rotation are often not
parallel to the X,Y or Z planes.  I use GROUPS to collect all parts related to a
rotation axis, so they are easy to work with.  Then I rotate them so the
rotation axis is parallel to one of the X,Y, or Z axis'.  From there, I rotate
the group the amount needed.  I then have to reverse the original rotations to
get the group oriented back to the original rotation axis.

  It sure would be nice to be able to pick an axle or pin, and use that to
define a rotation axis.  From there you could rotate the group clockwise or
counter clockwise.

Select the part you want it to pivot around then select the rest.
It will always pivot around the pivot point of the first item selected.

  I spend a lot of time managing the rotation point....  being able to move it
small increments by the keyboard might help, but I've never studied MLCad enough
to know if it already exists.

You can make it visible and draggable with the mouse.

  The width and height ratio stuff that LEGO is famous for is also a problem in
technic.  Getting pins and axles precisely in the holes is a tough task,
especially if the axis of the pin is not parallel to X, Y, Z.

Down 2 LDU :)

--
Dean Earley, Dee (dean@earlsoft.co.uk)

irc:    irc://irc.blitzed.org/
web:    http://personal.earlsoft.co.uk
phone:  +44 (0)780 8369596



Message has 1 Reply:
  Re: What about a LEGO TECHNIC tutorial
 
(...) But, rotations are limited to parallel to the X,Y and Z planes, so I don't think you are addressing what I'm talking about. Imagin you had an axle that is at 45 degrees in the XY plane, and you have a biped leg you want to rotate around the (...) (19 years ago, 7-Jun-05, to lugnet.cad.mlcad)

Message is in Reply To:
  Re: What about a LEGO TECHNIC tutorial
 
(...) Hi Eduardo, All the models I enter are technic. Compared to brick building, technic is much harder. With the standard bricks, everthing is turned multiples of 90 degrees, and studs line up parallel to the x,y, or z axis. Jaco is right, it (...) (19 years ago, 6-Jun-05, to lugnet.cad)

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