In a message dated 9/21/2010 9:47:39 A.M. Eastern Daylight Time,
greg@precisionplastics.com writes:
The material
only shrinks once.
Is there a percentage of shrinkage for a given thickness and/or diameter
that can be used to "size" a disk so that after cutting it round, machining
the edge, and post work annealing the correct diameter can be reached ?
Or, stated another way, if the cast acrylic only shrinks once, can the
shrinkage factor be added to the original cut size so that after annealing the
disk, it's diameter fits the ring within the acceptable tolerances depending
on what sealing method is used ?
Frank D.