coin dies

Can anyone give me info on how the dies are put in the machine and how they get lose and able to rotate? I am just curious and was wondering are ccw rotations worth more the cw rotations? Thanks

 

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http://www.doubleddie.com/58222.html

 

was just reading up on this myself today, good reading

 

I'm pretty luckly myself, get to go to local coin shows, and sit with coneca, and Mr. potter .. What more could you ask for in the error world for better references then that ..

 

I'm not sure you can determine if a die was rotated clockwise or counter-clockwise. Assuming you are talking about rotated dies, and not the rotation that occurs with doubled dies. With rotated dies, I don't see how anyone could know if a die was rotated 90 degrees clockwise, or 270 degrees counter-clockwise. Both would produce the same result.

 

The direction of rotation is not a factor but the amount of rotation is.

 

Presumably the "maximum" (perceived) rotation is 180 degrees. The difference between (perceived) CW or CCW rotations would be relative to that.

 

Bryant, This is a very good article that will help answer you question. This is a quote from the article -
"There are three basic causes: A loose set screw that allows the die to turn in the holder; a broken die shank that allows the die face to turn; and a misalignment due to the die being installed improperly. The loose screw is blamed for most of the early rotations, with the other two causes dividing up a minority of the rotations."

http://numismaster.com/ta/numis/Article.jsp?ArticleId=21771

But I can't answer which would be worth more ccw or cw

 

Thank you it was what I was looking for good info

 

Thank you everyone else for your input

 

There is a fourth reason as well. The dies have a flat ground on the side of the die for the set screw to press against. (Easier to firmly lock down the die pressing against a flat area than against the round die body.) This flat area is ground onto the die by pressing the die by hand against the grinder. If the die isn't held right the flat is ground in the wrong place on the die body. It isn't hard to have this flat off slightly. Say the flat is supposed to be ground at 12:00 and you grind it 5 mm off of that position (less than a quarter inch off). When the die is placed in the press with the flat in the correct position for the set screw, the die face will be rotated 15 degrees off from where it should be. Grind the flat at the 1:00 position and it will be 30 degrees off.

This is a case where the dies aren't actually rotated, and the die was put in the press correctly, but the die was manufactured improperly.