Last night I created my hybrid of a Huntsman 951P headgear and a Jackson Halo welding hood. It was remarkably easy.
The Hunstman 951P has a positive detent lock in the up and down positions. This makes it far superior to the Jackson Shadow hood when using a Nexgen LCD lens. The Shadow hood only has a friction stop, and the weight of the Nexgen lens will constantly drag the hood down.
I recently decided to try the new Jackson Halo hood for my Nexgen lens. It is obviously influenced by the ultra lightweight and flexible Speedglas hoods, and I do like it's lower weight to both the Shadow and the 951P, but despite the simple fact the Jackson and Huntsman are made in the same factory, they ruined the Halo hood by using the headgear from the Shadow hood and not the Huntsman 951P.
Fixing this only took about 15 minutes. The headgear for the Jackson hoods attaches to the shell via a simple5/8" hole on each side of shell. Above this hole are some smaller holes in a small arc. These are used for fine positioning of the headgear tilt stops.
The Huntsman hoods use a different system with a plastic hub riveted to the shell on both sides. This hub has the receivers for the hoods positive detents. So to move the headgear over I had to sacrifice a Huntsman hood. Removing the hubs is really easy. They are held in place by 3 plastic rivets that look like they are hot swaged. Simply slip a heavy duty razor knife between the shell and the hub and cut the plastic rivets. Then drill out the centers of the rivets with a small 5/64"drill bit.
You will need to enlarge the 5/8" holes in the Halo shell to around 7/8". I used a chassis punch , but a unibit would work fine.
Position the hub from the Huntsman on the Halo hood, and drill through the holes in the hub and through the plastic of the halo hood. The front edge of the hub should be parallel to the face of the hood.
I used little 4-40 machine screws through the holes to hold the hubs to the Halo hood. A tiny drop of loctite on the nuts and it is done.
Just re-assemble the Huntsman headgear on the Halo hood.
I REALLLLLLLY like mine. Lightweight, flexible, and it STAYS up.