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06-04-2024, 01:05 AM
Hi Guys
I ran into a similar problem with my previous chassis vendor, who had a fairly limited shop as machine shops go. I am more used to there being every kind of machining tool in such a place, with skilled people who know how to use it all.
I wanted some holes countersunk. They did everything with their punch press - CNC controlled. They could do a "burning" process to make a counter-sink and showed me a picture of the result. By no stretch oif the imagination would anyone call it a "countersink" nor would they approve the result. It turned out they could get a special punch for their machine that would make the required shape of hole, they just resist doing that because the punches are expensive.
Even with that, they routinely forgot to countersink certain holes and I had to do that myself. I never found the correct machine-screw angle bit, only wood-screw angled bits.
The machine shop guy who made my staking tool just used a lathe. It is easy with any lathe to copy the shape of an existing piece, even if it is the end face that must be copied. The blank is placed in the jaws of the lathe and the cutting tool set up to cut on the axis of the rotating blank. The piece being copied is aligned in parallel with the blank and a probe locked into the cutter holder follows the contour of the 1715, in this discussion. My dude might have free-handed it as the tool was not identical but works excellently.
If you contact a different shop with access to "primitive" tools, they may be able to make the tool a lot cheaper and quicker.
I ran into a similar problem with my previous chassis vendor, who had a fairly limited shop as machine shops go. I am more used to there being every kind of machining tool in such a place, with skilled people who know how to use it all.
I wanted some holes countersunk. They did everything with their punch press - CNC controlled. They could do a "burning" process to make a counter-sink and showed me a picture of the result. By no stretch oif the imagination would anyone call it a "countersink" nor would they approve the result. It turned out they could get a special punch for their machine that would make the required shape of hole, they just resist doing that because the punches are expensive.
Even with that, they routinely forgot to countersink certain holes and I had to do that myself. I never found the correct machine-screw angle bit, only wood-screw angled bits.
The machine shop guy who made my staking tool just used a lathe. It is easy with any lathe to copy the shape of an existing piece, even if it is the end face that must be copied. The blank is placed in the jaws of the lathe and the cutting tool set up to cut on the axis of the rotating blank. The piece being copied is aligned in parallel with the blank and a probe locked into the cutter holder follows the contour of the 1715, in this discussion. My dude might have free-handed it as the tool was not identical but works excellently.
If you contact a different shop with access to "primitive" tools, they may be able to make the tool a lot cheaper and quicker.
