Southern California archer Bruce Arnold must have thought sharpening 3 blade broadheads didn't make them sharp enough, so he added razor blades. He used injector blades which had a corner removed so the would fit on a broadhead. He must of had a fixture of some kind to get them as precise as he did. I imagine they were done with a grinder. Also, a jig must have been used to drill the holes in the heads. He installed them with what looks like Pliobond glue and brass eyelets. The Bodkin is just glued. I'm guessing these were done sometime in the late 1950s. The Hill's Hornets look like a later version.
L-R, Bodkin, MA-3 and Hill's Hornet.

Quite a few guys in my archery club during the early 70's used to epoxy injector blades to their broadheads. That brings back memories.
Very cool stuff!
Bisch
This is it.
I have seen a picture of a Zwickey that Fred Bear turned into a four blade with a bleeder, a forerunner of the Bear Razorheads.
Doug Kittredge also advocated doing that...
Sharpening a normal sturdy two-blade works pretty well for me, no need to overthink it.
A friend talked me into using the Satellite heads with replaceable blades. I hit a quakie with one an d the steel point drove into the aluminum body . Everything fell apart. 😀
While I never had those particular heads I had some with razor blade style replaceable blades in the eighties..... didn’t care for them. Just seem flimsy..... I don’t know about those.
lets hope they flew better than they looked. Yikes!!!!!!
Ira, seeing that page from the catalog reminds me of a shop owner I knew back in IL. Went in one day and his fingers were all taped up. I asked why, he said from putting the razor blades into the Wasp heads. That catalog had so much info in it. More of a book than a catalog.
That was not uncommon in the 60s and 70s around my stomping grounds. Don't need that now. Guessing that was the start to someone ( Savora ? Wasp ?, a few earlier ones) machining ferrules to hold them and allow you to trade out blades.
In the earlier days there was one brand ( two and three blade) that machined a "regular head to accept razor blades. I think it was called " lil shaver."
Tom, I had forgotten that Jack Howard did pretty much the same thing. He also used Pliobond glue.
I used to shoot a Jim Doherty. 003 that had razor blades
I think with some of the glues available today a mod like that would be very simple. OTOH, with some of the exceptional broadheads available there is no need to try to improve one that needs it.
Not to denigrate the ingenuity and thought. It's all part of the who and what that has brought us better broadheads.
Was one of Jack Howard’s thing as well. He even sold a jig to hold things together. Maybe someone has his catalog where he discussed why and how to do it. I gave mine away.
😂
Seems like an awful lot of work for not much advantage. Reminds me of a handyman special you might see old Red do on the Red Green show 😎
Now there's a guy who followed up on one of his ideas. Pretty inventive design.
Never saw any like them before.....