CNC Bottom Metal

Hey guys, wondering what the difficulty is on this one. I’m looking for some Mauser bottom metal, along the same lines as Sunnyhill.

Are there any CNC guys who could give their two cents as to the viability of having someone do this?

But once you have the first three steps, the more you make the better the numbers become
so how many dozen do you want? I thought this was a one-of
 
One off parts in the cnc's is a pretty good waste. for small complex parts with multiple setups its wise to do 10-15 and save the worry of scrapping the single. Doesnt even take that much longer once you get it all running.
A fella could argue that making 10-15 of them, before checking dimensions and tolerances, is just a faster way to make more scrap parts, no? :)
Aside from that, then you have the issue of what to do with the remainder, since what you actually needed, was 1 good part...

A fella that works in a shop full of tombstone equipped, robot loaded mills, is gonna have a distinctly different point of view than a fella with a CNC Knee mill, taking advantage of CNC's (and Software's) abilities to make better, more complex parts as required.

Where I worked, it wasn't about making money, as much as it was about saving very high value assemblies, that replacement parts were not available for.
I reproduced some no longer available forgings, used on a weapons pylon, out of solid stock. Kept us from scrapping the pylon, worth a little over $800K. The best that Boeing was able to give us for a print, was a single page 8 1/2 x 11, with seven or eight different views and sections laying out the details. Tiny print and numbers, but at least, blessedly, it was clear a readable!
Two work days later, had the part done. Cheap wages, for value saved from scrap!

Less than a week later, we had demand for another, though opposite handed, so it was really quick to mirror off the geometry I had used, and run that part.

I missed the bus as far as parametric programming, solids, and scanning tech came along, have almost no experience other than a few abortive attempts to familiarize myself with some different software. Not in the field anymore, other than my hobby stuff.
google nor I know wtf a WAG is
Wild A*s Guess.
 
A fella could argue that making 10-15 of them, before checking dimensions and tolerances, is just a faster way to make more scrap parts, no? :)
Aside from that, then you have the issue of what to do with the remainder, since what you actually needed, was 1 good part...
Id question someones methods if he is not checking parts as they are being run. pretty basic Qa.
 
Id question someones methods if he is not checking parts as they are being run. pretty basic Qa.
About like my questioning why a fella wants to do a 10-15 part run, when only one part is what is needed. Though the OP later confesses that he thinks he has use of more, which would be good info to have started with, if he was actually looking for a quote! Set-up and possible custom tooling ammortized over more parts. make cheaper parts, most of the time.

You don't go to the shop that makes iPhone Chassis' and ask them to make a one-of, and you don't go to the local Jobber for a tens of thousands of parts run. Horses for courses.

Like I said, my experience was in taking advantage of the advantages available through CNC and software, to make complicated (relatively, we are talking about late 1970's era aircraft tech!) parts, a LOT easier than if we had been doing them on Manual machines. Way fewer setups, esp when you start in to multi-radii curves, and none of the dicking about walking the work this way and that on a rotary table surface in the middle of the operation (done a bunch of that too!).

I'm sure I'd see it differently, if I grew up in a warehouse full of Robodrill cells, and had to either make enough to pay the bills or starve. :)

I don't see CNC as a waste for one-of parts. Provided that using CNC gets you enough advantages over using other methods.

The main advantage I DO see, is that once you have the one you need in hand, and the file saved, you always have the option to re-run it for one or more 'more' parts, or you can modify it and tweak it at leisure to make small changes as required or requested...
 
About like my questioning why a fella wants to do a 10-15 part run, when only one part is what is needed. Though the OP later confesses that he thinks he has use of more, which would be good info to have started with, if he was actually looking for a quote! Set-up and possible custom tooling ammortized over more parts. make cheaper parts, most of the time.

Generally a small run is more appealing to both parties. he will get more interest from a shop and better rates for the products he has in his hands at the end.
By the time a shop buys the material, the tools, takes the time to set it up, program and run it, that is a job most shops that are capable of providing a nice part like that, wont even want to take on. Some will not take it on solely because its a part of a firearm

Just trying to give him some advice so he doesn't get turned down by 5 shops, which would be extremely likely for one finesse, complex and thin-ass part.
 
From someone who has worked in the machining industry for many many years, ran manual machines, ran CNC machines, ran EDM machines, worked in Eng dept and quoted both incoming and outgoing outsource work the cost would be a lot more than the project is worth.

The best advice I can say is become friends with someone who works in shop capable of doing the work and be patient for slow periods.

I designed and had the guys machine a custom hand guard for one of my ARs. By the time i designed and the guys machined it and the adapter to attach it to a standard barrel nut the cost would be close to $7500 easy.
 
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