Hi Silveradogold-
I just read through the description above and I think it is really too complicated for those who have not used lots of different tools and methods. Sorry...
There is actually not much to it.
All you really want is a thingy about 2 or 3 cm round or rectangular shaped with a hole in it that the cable release screws into. It only needs to be around 5 mm thick.
It fits on the camera directly over the shutter button anyplace where it can be stuck on and not get in the way. Since every camera design is completely different, you just have to wing it.
The key elements are:
>the tiny metal threaded piece (embedded in the hole) that enables you to use your cable release,
>the thingy itself- (made of self-curing epoxy putty that you mix and place with your fingers), which is approximately concave-convex with the concave side towards the camera,
>and the 3M double-sticky foam tape which you can get in any office supply.
The difficult part that no photograph can show has to do with the fact that this epoxy putty will stick directly to your camera, but you really need there to be hollow empty spaces inside the concavity so you're not pushing the shutter button unless it is with the shutter release cable!! So, in order to make the thingy properly you need to first protectively cover the camera and then add extra material in places to contour the concave inside so that it doesn't touch anything it shouldn't, THEN you apply the epoxy putty over the modified surface of your camera, so that the finished piece is the correct shape, doesn't touch where it shouldn't, and comes in contact with the solid surfaces of the camera where it can be attached with small pieces of the 3M tape.
If you want to make a thingy for your own digital camera, think about it, do some sketches, or whatever works for you, and just make it happen. It might help if you were familiar with the material- if you haven't used the epoxy putty (that comes in a solid form, that you just tear off a small chunk and mix it until its ready), this might be a good time to get some and experiment with it. Make a knob for a drawer-pull, or a small handle for a file, and you can see how it works before you try a more ambitious project.