If you want to make some money, make metal triggers for Hi-Point 995 series carbines. The plastic originals like to break where the pin hole is and replacements aren't available.
On Wednesday, October 13, 2021, 09:48:22 AM MDT, Chris Albertson <[email protected]> wrote: If you can afford it, a part like this can be 3D printed in stainless steel. I think SpaceX 3D prints the injectors used on their Raptor rocket engines in some exotic material like Inconel. Printer that can do that are expensive but you can use a service. But I think the point of this handle is an exercise, not to make a handle. Given that you have a CNC mill how to you best make an exact replica? Think of this as a homework assignment. Here is what I would do... Take the CAD file and orient it so the two drill holes are on the vertical axis. (I think? the crank and handle holes are parallel) The in the CAD system add a metal pedestal The elevates the crank. On the bottom of the pedestal are two blind threaded holes, perhaps M5 or M6 size. Start by making the hole on the backside of the billet. Fip the billet and screw it to the table from the bottom. Mill the crank top and sides and drill the holes. Flip the crank and use the two holes you just drilled to screw the part to the table, pedestal facing up. You need spacers under the crank to make the drilled holes vertical Using an end mill finish the side of the crank that is now facing up. This will turn the entire pedestal into chips. For both cuts the top surface is flat but horizontal, so maybe a ball mill is required, at least for finishing A second method is to design the part with bridges to the billet. You cut the part, flip the billet and cutfrom the other side and then there is a crank suspended inside the scrap and connected to it by maybe three bridges. then you cut them with a saw and the part falls out. Finally, you smooth over the saw cuts. THis is like casting where you have to saw off some parts. _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
