Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Machining range for 3.2 Ra
April 10, 2008
Dear sir,
I have a drawing showing the machining as 3.2Ra . When I checked with instrument I am getting all less than 2.0Ra. Drawing doesn't specify a range . Kindly let me know what is the range acceptable and in which standard this is mentioned
Waiting for the reply.
SNC - UAE
I have never heard of anyone complaining about getting a better, smoother surface finish than they specified. I would take the spec as a minimum acceptable.
AF Kenton
retired business owner - Hatboro, Pennsylvania
April 11, 2008
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