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trackball ring
ErikRuud:
Here is a diagram of how I mounted my KidsBall.
My CP top is laminated out of two layers, a 1/4 cherry plywood, and a 1/2 birch plywood. The cherry looks good, and the birch provide the strength.
The ball is securely mounted to the 1/2 ply, so the strength of the 1/4 inch ply is really not an issue.
I don't have to worry about a ring, because I havee the original case to hold the ball in place.
darkmanx:
very nice erik, unfortunatly i dont have a 2 layer cp top. as for voodoo's, im not sure that will give me enough reveal, especially after i put lexan on top. im curious, what thickness do people usually use for lexan or plexi on top? im thinking 1/4 or 1/8, which is almost 1" total thickness (my cp is 3/4"). maybe i will have to use voodoo's idea and rout something out.. i just dont want to have to rout too much and take away from the strength of the cp. hopefully the lexan on top will take most of the beating and give some support.
ErikRuud:
I guess the point that I was trying to make is this, if you make sure that the ball is attached to the thick part of your cabinet, you wont have to worry so much about the strength of the routed out part.
At an inch thick, you may find that you need to route out for more than just the track ball.
darkmanx:
i know thats what i was tryin to say, i will have to rout out an area for the whole pcb to be closer to the top so i get some reveal i am happy with. one thing is for sure, i will definatly be trying it out on some scrap first. anyone know what size the ball is? i would see myself but im at work and trying to figure out what size hole saw to pick up on the way home.
ErikRuud:
This Crystal Trakball write up says 2-1/4 inch.
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