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 CAD / LDraw Files / Parts / 5789
5788  |  5790
Subject: 
Re: New Part: x784 Technic Gear Hailfire Droid Wheel
Newsgroups: 
lugnet.cad.dat.parts
Date: 
Fri, 2 Dec 2005 07:19:38 GMT
Viewed: 
3823 times
  
I have a few comments to make about the part in general, and since I wanted to highlight some lines in this particular sub-part, I’m entering my whole reply here. Lines 46-55 in this file are listed as triangles, but all have two identical vertices, so they’re actually lines. Since they’re color 16, I’m guessing that they actually don’t belong in the file at all. Perhaps they’re the result of 3 decimal rounding.

In lugnet.cad.dat.parts, Amnon Silverstein wrote:
   3 16 16.02 245.419 28.886 13.508 245.541 28.914 13.508 245.541 28.914
3 16 13.508 245.541 28.914 16.02 245.419 28.886 16.02 245.419 28.886
3 16 14.239 217.258 -28.863 0.0 217.725 -28.863 0.0 217.725 -28.863
3 16 0.0 217.725 -28.863 14.239 217.258 -28.863 14.239 217.258 -28.863
3 16 0.0 217.725 28.862 14.239 217.258 28.862 14.239 217.258 28.862
3 16 14.239 217.258 28.862 0.0 217.725 28.862 0.0 217.725 28.862
3 16 -0.065 245.94 -28.819 16.021 245.417 -28.819 16.021 245.417 -28.819
3 16 16.021 245.417 -28.819 -0.065 245.94 -28.819 -0.065 245.94 -28.819
3 16 13.508 245.541 28.914 -0.065 245.941 28.886 -0.065 245.941 28.886
3 16 -0.065 245.941 28.886 13.508 245.541 28.914 13.508 245.541 28.914

Additionally, three decimal places definitely isn’t enough in x784s02.dat and x784.dat, or the calculations are off a little, because I can see fairly obvious gaps between the segments. Also, the gear teeth primitives won’t work, because they’re modeled to be placed on a convex surface, so there’s a gap underneath when put onto a flat surface like you have done. Here’s what I mean:



Note that the gaps visible between the segments are exagerated by the fact that I have BFC enabled, so the back sides of the surfaces on the far side of the part aren’t being drawn. This lets the white background show through.

Finally, I’m not sure if you’re aware, but the gear teeth in x784s02 are for the opposite side of the circle from the rest. This of course doesn’t hurt anything since the part goes the full 360 degrees, but it seemed a bit odd.

--Travis



Message has 1 Reply:
  Re: New Part: x784 Technic Gear Hailfire Droid Wheel
 
Sorry I missed this in my first reply, but I just noticed. There's a minor modeling glitch that's resulting in extra polygons on one side (but not the other). Take a look at the circled sections (you can just make out the problem via the shading): (...) (19 years ago, 2-Dec-05, to lugnet.cad.dat.parts, FTX)

Message is in Reply To:
  Re: New Part: x784 Technic Gear Hailfire Droid Wheel  [DAT]
 
New Version of x784 Each file I previously posted needs to be replaced. The new parts list has: x784.dat x784s01.dat x784s02.dat x784s03 has been deleted Each of the new files will follow this post. 0 Technic Gear Hailfire Droid Wheel Fin Segment 0 (...) (19 years ago, 2-Dec-05, to lugnet.cad.dat.parts)

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