Do you make your own replacement tip overlays or buy out? If you buy out where do you get them?

nope Ben I make my own out of eather fiberglass or wood but they can be made out of anything really thats strong enough to with stand the string shock and a shot....Kurt made so very nice looking overlay material bd

I've found some good materials from vendors who sell knife making supplies.  The handle materials are available in various hardwoods, to bone, to phenolic, micarta and some fiberglass.

I found some real nice linen micarta at a knife making seminar in Friendship, IN at the annual Muzzle Loading Championships.

Good Luck,
roofleakfixer

Bowdoc helped me out with some beauties! Other than that I have made my own from pieces of bone or exotic woods.

Three rivers or any bow maker or bow maker supply shop will have some.