Currently all I have are a couple Horseman ti spacers like you can see mounted on other folks knives in my blog link. These are already pre-drilled with jimping to fit that model only. If I've got the spacer to copy I could copy them to a CAD file via a friend and store them to make drop in type spacers for folks but I'd have to have the first one of each to do that. I'll be doing a new one soon for one of the Karambits with a knuckle ring too and I have already done a Mini A-100 that could be redone without the screw driver pry bar end.
I own a 4 and 5/8" closed 7A, Persian, and CQC45 as well as having access to a 12 no longer mine since I sold it but close by, like still in my safe storing for a buddy that actually owns it so for those I could offer a spacer if need be but it would take time to get to it. Also, I have not done enough Emerson spacers to really know if they all use the exact same thickness for the spacer. Some of the earlier models had different thinner spacers in the rear and I know this because I own one of them. On others so far they've always been .190 thickness. I'm not planning on ever getting to artsy with the ones I make. What you see is basically all I'm interested in doing keeping it simple really but the size of the jimping is something easily changed usually although normally I think its best to try to match that to some or all of what is already on the folder as it came so it looks like it belongs there.
STR