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Got this Email from PDA Today


Bill Piche

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PDA sent this out today:

PDA will be prepared to start shipping calibrated SOS grippers by 9/30/01. There will be two models to start- the SOS Model II and SOS Model III. Grip meisters will be able to choose their closing torque from calibrated stock on hand. Here are the specifications and tolerances.

SOS Model II ฦ.90 each plus S&H

0.260" diameter piano wire plus/minus 0.002"

Pinned and knurled aluminum handles

Handle depth set plus/minus 1/16"

Handles tips set at 2-11/16" plus/minus 1/16" (nominal 28-32 degrees included angle)

One handle stamped 'PDA', the other stamped 'II'

Provided with calibration tag denoting Mfg, Model, Included Angle, Skew, Closing Torque, Known Range, Signed off by operator

Stock quantity - 50

SOS Model III ฦ.90 each plus S&H

0.280" diameter piano wire plus/minus 0.002"

Pinned and knurled aluminum handles

Handle depth set plus/minus 1/16"

Handles tips set at 2-11/16" plus/minus 1/16" (nominal 28-32 degrees included angle)

One handle stamped 'PDA', the other stamped 'III'

Provided with calibration tag denoting Date, Mfg, Model, Included Angle, Skew, Closing Torque, Known Range, Signed off by operator

Stock quantity - 100

Quantity Discounts

SOS Model II - ฤ.90 each for two, ม.99 each for three, Inquire for higher quantities

SOS Model III - ฤ.90 each for two, ม.99 each for three, Inquire for higher quantities

Mix and Match - ฤ.90 each for two, ม.99 each for three, Inquire for higher quantities

All orders provided with 2 disposable plastic handle shields to prevent marring handles when seasoning in a vice.

US Mainland FedEx Ground S&H

1 Gripper ů.95

2 Grippers ű.95

3 Grippers ป.95

Inquire for higher quantities, shipping speed, and locations

Calibrations will be executed in accordance with the procedure outlined here: http://www.fractionalplates.com/equipment/equipment36.html . Each SOS gripper will be wire-tagged with a calibration tag denoting the data specified above.

Seasoning may be offered at a later date.

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Looks like some more grippers to add to my collection!  :)

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Did I read this correctly?  PDA is offering calibrated UNSEASONED grippers for sale??!!

No offense, but what's the point in buying an unseasoned gripper if after I "season" it (by closing it 50-100 times) it now has a different strength and I then no longer know what that closing strength is (other than it is weaker than it used to be)???

I mean, I can buy a 300 in-lb gripper, season it and now know (strongly suspect) that, guess what, my gripper is no longer a 300 in-lb gripper! It's now a 2?? in-lb gripper!

IMHO it only makes sense to buy seasoned precalibrated grippers.

Can someone help me with my confusion, please.

Thanx!

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I just checked their site.  The SOS grippers can now be ordered and you can get seasoned ones as well.  I ordered two.  One in the 460-470 range and another 490-500in-lbs.

SOS Grippers

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