Can I anodize a part myself, or have another maker anodize/Cerakote it? Will that void the warranty?

Anodizing or Cerakoting the parts will not void the warranty. Please feel free to do that. Modifications that will void the warranty include the intentional removal of material (grinding, engraving, etc) or using heat or flame to try to heat anodize color the part.

You can learn more about the LynchNW Guarantee here.