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Greetings.
I have made a new discovery that may seem all too obvious to everyone else
who has actually programmed elements in LDraw or MLCAD. My discovery is as
follows:
All bricks listed as having a 33-degree slope are not named with correct
values. I always wondered what the slope on these bricks really were,
considering that the LEGO S.A.H.S. catalogs listed them as 25-degree slopes,
possibly to throw off their competitors. This was further compounded when I was
not able to angle a pattern right so that it would fit onto a "Slope Brick 33
3 x 2". Today, I used AutoCAD to resolve my problem. Upon creating and
dimensioning a replica of that piece, as well as the 4 x 2 and 2 x 2 slopes, I
found out that the resulting angle was 27 Degrees. Yes, "vingt-sept".
Now that this is known, will have a significant change on things? I don't
know. I'm not even sure where the 33-degree idea came from. Maybe it was a
mistake that somebody missed years ago. But that mistake has become a standard.
Even though the SAHS catalogs list them as 25 degree slopes (closer to the
magic number than 33) -- and have been for years, LCad-emics have been building
to the list value of 33 degrees.
I would like to propose a massive name change affecting quite a bit of the
Slope category from "Slope Brick 33..." to "Slope Brick 27...". This will make
it easier on later builders and resolve a whole bunch of confusion. It should
take affect starting with the next LDraw parts upgrade. Such a change will make
it easier for other creators to develop "roof tiles".
-- James Jackson
"The other 'James J.'"
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Message has 2 Replies:
 | | Re: "33" Slope Shocker... Possible name change?
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| This problem has (probably) been realized by a number of people in the last few years; I figured it out (or was it pointed out to me?) a few months ago. Yes, I am planning on doing a mass name-change, but after the automated Parts-Tracker is up and (...) (24 years ago, 9-Apr-01, to lugnet.cad.dev)
| | | Re: "33" Slope Shocker... Possible name change?
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| "James J." <jejackso@memphis.edu> wrote in message news:GBHo7t.911@lugnet.com... (...) According to the "Lego Dimension Guide" I have that was created by Onyx (I think) the angle is 26.565 degrees. That is what I use and it hits it perfect every (...) (24 years ago, 10-Apr-01, to lugnet.cad.dev)
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