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Subject: tolerances and FracRack module width

From: "David Ingebretsen" <dingebre@...>
Date: 2009-02-22

I have a couple of questions about tolerances on FracRack panelsI want to send to Schafer.

 

1.      What tolerance is typically specified for width, holes, etc.?

2.      How much smaller should I make the board to allow assembly?

 

I saw some specs. on a FracRack panel:

 

Deburr outside edges, do not round corners

Light grain, black anodize

tolerances: +/- 0.010 in

Holes +/- 0.005 in

 

Are these reasonable?

 

Should I just design the panel to be 0.010 inches smaller inwidth?

 

Thanks

 

David

 

David M. Ingebretsen M.S., M.E.

Collision Forensics & Engineering, Inc.

2469 East Fort Union Blvd. STE 114

Salt Lake City, UT 84121

www.CFandE.com

 

801 733-5458 Office

801 842-5451 Cell

 

dingebre@...

dingebre@...