Here are the pictures....it doesnt look like much but functions great and is comfortable with and without gloves.
The dimensions are 3mm thick x 40mm wide x 100mm long
The pvc conduit is 20mm diameter x 80mm long (cut for my hand)
The 6mm bungee was cut a little long, knotted and the tail tucked into the conduit...I can adjust how tight it is on my hand by moving the knot.
The little piece of PVC on the 1/8" bungee is designed to keep the rotating magnetic switch from sitting on the aluminum plate as without this little piece it the switch would move ever so slightly with wrist/arm movement...it also made it easier to turn the switch as it eliminated the friction between the switch and the plate.
I started out with a smaller diamter length of PVC conduit but found the larger diameter was little more comfortable. You can see the smaller piece inside the larger piece because I originally put the larger diamter piece on to experiment with how it would feel and it worked well and there was no reason to take it apart to remove the smaller diameter piece.
It is comfortable enough to wear throughout the dive whether or not I need to use the torch...it can easily be switch between hands, and it clips off to my harness shoulder d-ring by the bolt snap on the end of the torch.
I put a slight bend in the plate so that it arcs ever so slightly over the back of my hand...this was based on the photo of the product I posted earlier. I thought perhaps it would make it more comfortable but I don't think it matters much, especially wth gloves on.
I drilled the holes with regular cordless drill and used a countersink bit to chamfer the edges of the holes.
I think I paid 5 or 6 euros for a 1 meter length of the aluminum...everything else I already had left over from other projects.
I have an OrcaTorch D550 that was gifted to me...it came with a soft goodman handle/hand wrap thingy that I find does not hold the torch well...I am afraid the D550 would slip out so it is relegated as my backup torch and is either in my drysuit thigh pocket or clipped off on my left shoulder d-ring by an attached bolt snap. It would probably work even better on my home made goodman handle given the shorter length of the D550 and the rear push-design but I have not found a compelling reason to change my setup yet.
-Z