hi paul,
iv been thinking about some sort of scraper/gaurd for the linear rails..im ging to put an hour meter on the table so i can get an idea of how long parts last and cost of running.then i can work out if the for instance if the 16mm bearings will last a year and cost x amount and then they become a consumable? Or if its just a bad design and i'll need to rejig it....is plasma dust evil stuff?