Originally Posted by Pauld109
Joe, a question that mayby has a simple answer but I've failed to see it. You have CNC milled MDF which is a little unstable and then treated it which took quite some time I imagin. Why not go with Aluminium or other harder and stable (plastic's?) material. The only reason I can see is that the CNC m/c is for wood only.
Paul. Who's probably going to get red faced on this one
Sorry it took so long to get to this one Paul. There are other tooling materials out there but frm what I have heard they arent worth the extra money. MDF is easy to sand and fill and that goe a long way when you need to clean up witness lines or other small imperfections. It is also thousands of dollars less expensive to use MDF than it is to have aluminum female molds made. Im actually considering having some made but there is a lot of hand work (labor) to clean up aluminum after it is milled. That alone jacks the price way up.
The guy doing my milling is experimenting with resins. We will see how that goes. Sorry I dont have more info on other tooling boards but It was reccomended to me that I stay away from it because it's not worth it.