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Unread 29-10-2010, 19:29
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Leav Leav is offline
Spud Gun Division
AKA: Leav Oz-Ari
FRC #3316 (D-Bug)
Team Role: Mentor
 
Join Date: Dec 2004
Rookie Year: 2005
Location: Technion, Haifa, Israel
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Re: How was this made? (Aluminum Heat Sink - Mystery Manufacturing Method)

Quote:
Originally Posted by JamesCH95 View Post
It is hard to tell from the pictures, can you try using a macro setting to get a clear picture of the fin root?

I couldn't since it's a camera phone, so I built a MacroScope from an old CD drive lens...
(Yes those are my LCD screen's RGB pixels I shot with it!)
Demonstration of magnification:
Outer CD case showing many small dimples.
Single dimple!

Also I cobbled together a work light.

It was impossible to stay focused on the details, so I had to make a video of the area you requested.

If that's not clear enough I could try to make a makeshift stand for it maybe? but with the limited depth of field (I think that's the term) with the CD lens, you can only see a very specific distance each time...


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Back on topic:
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If the fins were bonded on, how would that explain one side being smooth and the other not?

-Leav
__________________
"We choose to build robots this season and do the other things; Not because they are easy, but because they are hard."
-Paraphrasing JFK

Participated in FIRST as a student: 2005-2006 (But still learning every season!)
Mentor: 2008 - ? (Team 2630 2008-2011, and Team 3316 since 2013)
Engineer: 2011 - ? (B.Sc. and M.Sc. in Mech. Eng. from the Technion IIT)
FIRST Volunteer - 2007 - ? (MC, FTA, FIRST Aid etc.)

Last edited by Leav : 29-10-2010 at 19:48.