WAG response would be that you need a new part or you'd need to fit slightly
oversize pins in the existing disk, although the hardness of the disk may
have been compromised by the heat soak, and could be annealed now.
Not knowing what the metal alloy(s) are, you should probably get a new
replacement part from the machine maker.
Another possibility is that the pins may have been shrunk-fit into the
disk.. which has little meaning now that the holes are oversize.
Some plastics are abrasive, and HSS pins may exhibit considerable wear if
used to grind some plastics.. also, plastic may be more likely to stick to
Carbide pins would likely be brittle (depending upon how far they protrude
from the disk) but more durable/less wear, and less likely to have the
plastic stick to them.
When you say "mils" while talking about dimensions of parts, it's unclear
what sizes you're trying to describe.
Mils are common to film thicknesses.. heavy duty trash bags are 3 mils, or
coatings thicknesses/paint coatings etc.
Mils isn't a shortened term meant to represent mm or millimeters (like
tranny for transmission or the other s/he kind).
Whereas a tranny fitting would generally be referred to as an adapter (or
possibly a dressmaker term).
Millimeters are millimeters or MM/mm, so 118mm is about 1-3/4".
Mils are thousandths-of-an-inch, but 0.118" isn't expressed as 118 mils..
and 0.118" would be smaller than 1/8" in diameter.
Maybe you're referring to the diameter of the pins, but it's not really
clear.. 3mm is 0.1181").
Finally, if you expect to have frequent questions or comments regarding
metalworking, home shop practices or similar topics (all welcome here in the
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