Thread: Please help 451 rim ERD
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Old 03-20-14 | 09:13 PM
  #10  
Bezalel
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For three of the four sizes Velocity lists an ERD 19mm less than the ISO size, the other one is 18mm difference. In theory the difference between the ERD and ISO size should be consistent for the extrusion regardless of ISO size.

I'd guess 432.
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