I'm wondering why the hell people who don't overlap one-another's market still have a need to "compete" with others. Mostly I'm talking about building up one's image at the cost of belittling another's.
I had an experience. I am not a "precision machinist" by any stretch. My primary offering to my customers is innovation, and machines that work to improve their productivity.
Last year, I built a press and explosives composition mold for a friend way-far out west. When he started using it, he was using pressures several TIMES higher than what I had designed it for (and what he spec'd out), and the mold cavity liners were slipping a little bit on ejection of the product. So I made him a liner retainer plate that would hold against that extra pressure. It has 54 cavity holes and 74 counter-sunk bolt holes in an array that will surround all the cavities and hold the plate against the liner flanges (they look a bit like a flanged oilite bushing, but made of Acetal). I machined the cavity holes, and drilled the bolt holes in a single clamp-up on CNC.
His task was to take the mold body to a local machinst (who only normally repairs auto parts, but has a couple of general-purpose machines), and have matching holes drilled and tapped to fit the plate. The guy said he could do it, and even had "CNC software" so he could match the array exactly.
The next day, the machinist called him to say that all the holes were "all over the place; up to 30-thousanths off-centers", and he was going to have to take the plate to a better-equipped shop to have all the holes probe-plotted to make sure his holes lined up. His new price reflected that. He also told my friend that "next time, you need to hire someone who knows what he's doing." (ouch!)
So, the liners have finally worn out. Expected by both of us. They were made of acetal, for pressures far lower than what he is now using. We're going to change to a high-lubricity brass. He sent the whole mold back for me to re-line.
I've been chasing this inaccuracy problem ever since his first phone call about it, and could never replicate anything remotely like it. My only issue with my machine is poor surface finish, because I have yet to rebuild my spindle. But when I got the mold, the first thing I did was take it apart and start measuring. I deliberately did not refer to my drawings or the CAM files. I just started manually measuring holes, center distances, and diagonals all over the plate.
Everything is dead-on to within a half-thou in every direction (the best my measuring tools will do for distances larger than 2"). There are no center-to-center variations, no cumulative changes across the length or breadth of the plate, no out-of-square condition... nothin', zip, nada.
Then I checked the drawings and CAM files. They exactly matched the physical part.
He and I don't compete; we're fifteen states apart and do different things. Maybe he thinks we do.
Why? Why do people do this crap? Is it just the bux, or is it trying to build themselves up in their own eyes?
Damn. Well, at least I know my mill isn't misbehaving, after all.
LLoyd