Thanks Brain for your advices.
Hire a skilled machinist cost more than a machine, and the machine can also be used in other jobs, in this way the cost will allocate to other product, it also force the price down. That is the advantage of the machine.
I know I am producing the same product with others, but we can offer better price in same quality, also we carry out more widely product selection ,coz we can custom make any thing you want, no matter your want a slide for WA 8045 or KSC USP, we can make it. So, I think the slide business still have market in Canada.
The biggest problem right now is the copyright, if we can't solve this one, then we may not mass produce the slides.