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Old 07-22-2010, 11:56 PM
Eric Chang Eric Chang is offline
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Location: TAIWAN
 
Join Date: Jul 2010
Posts: 3
Mein Auto: E34 525
Hi bluebee:
I use a free software to do the CAD and which name is sketchUP.
It's simple for a novice just like me.
You can download the software from google.
http://www.google.com/sketchup/download/
And make this tool just need a driller and a 4" disc grinder.
The problem of the original semicircular cut is that it couldn't be match to the center of water pump pulley.
It is because the gap of red circle is not deep enough .
You can compare below picture to it's modified type,and you'll see where is the difference of them.
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