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Unread 10-02-2014, 02:33
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
Team Role: Teacher
 
Join Date: Jul 2002
Rookie Year: 2002
Location: Glendale, CA
Posts: 8,506
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Re: pic: 696 Teaser 1

Quote:
Originally Posted by DampRobot View Post
My first thoughts after seeing that shade of green were: "It's 3d printed!" and "It's a render!"

Just curious, what was your CNC setup for those like? What tools/coolant/feedrates did you use, and how did you fixture them? That surface finish on your cuts (under the ano) looks really awesome, did you just go crazy with finish passes or do some sort of tumbled finish before anodizing?
HAAS MiniMill. Trim C350 coolant at 7% Brix, 4 streams high pressure flood. Lakeshore carbide 1/4" 3fl ZrN coated endmill. 10% Stepover. 6000 RPM. 120 IPM pocketing. 0.010 finish pass at 60 IPM. No tumbling or anything. Just a deburring knife on the edges.

We fixtured by just bolting it down to a fixture plate that we drilled and tapped with a few holes.
__________________
Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004
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