I can't speak for every shop, but only a handful of guys can use a Bridgeport to do anything other than face off raw stock and drill a couple holes, and only one guy that can cut threads on a lathe.
We only use CNC for production parts. You can measure tool lengths to within a few tenths with only a 1-2-3 block, bore or boss centers for a work offset with a half thou resolution test indicator, stock material edges for work offsets using a $15 edge finder and check your work with a half thou resolution caliper. Of course most of our production parts have a .020" general tolerance and there's lots of blending, but all that equipment will get you a part that's at least within .005".
Yes but they get away with the above because they can. Tool and die shops have muuuuuch stricter tolerances (<.001”) but those shops are facing labor shortages just like every other right now. And it’s no secret trades are getting fewer and fewer fresh blood as schools push most motivated students to college and throw loan money at them.
I can't speak for every shop, but only a handful of guys can use a Bridgeport to do anything other than face off raw stock and drill a couple holes, and only one guy that can cut threads on a lathe.
We only use CNC for production parts. You can measure tool lengths to within a few tenths with only a 1-2-3 block, bore or boss centers for a work offset with a half thou resolution test indicator, stock material edges for work offsets using a $15 edge finder and check your work with a half thou resolution caliper. Of course most of our production parts have a .020" general tolerance and there's lots of blending, but all that equipment will get you a part that's at least within .005".
Geez...
Is it that hard to find decent machinists?
Yes but they get away with the above because they can. Tool and die shops have muuuuuch stricter tolerances (<.001”) but those shops are facing labor shortages just like every other right now. And it’s no secret trades are getting fewer and fewer fresh blood as schools push most motivated students to college and throw loan money at them.