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What reproduction parts are needed (Read 4044 times)

uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: What reproduction parts are needed Reply #15 - Mar 17^th, 2023 at 7:47am	Print Post
	Can I assume you have a CNC lathe? Hopefully a bar machine?

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HarrisHighwall Participating Member Offline Posts: 48 Joined: Mar 4^th, 2023	sorry no CNC lathe Reply #16 - Mar 17^th, 2023 at 9:36am	Print Post
	3 Fadal vertical machining centers w/ 4th axis and digitizing several CADCAM programs including Mastercam, Fusion360, Onecnc etc some I can even use pretty well plus Bridgeports, lathe & surface grinder + wire and sinker EDM BUT the only cost effective hourly rate is the VMCs and only when making several of the same part at least 20 or the programing and setup become cost prohibitive and that's at less than half "normal shop rate" My legs are too old and hurt too much to do manual machining... even on guns. heck even my own guns.


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GunBum Senior Forum Member Offline Posts: 323 Location: SW Missouri Joined: Oct 30^th, 2021	Re: What reproduction parts are needed Reply #17 - Mar 17^th, 2023 at 9:45am	Print Post
	Tang sights that don’t cost a full kidney would be nice.


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bnice Frequent Elocutionist Offline Posts: 1985 Location: Iowa Joined: Nov 30^th, 2006	Re: What reproduction parts are needed Reply #18 - Mar 17^th, 2023 at 10:19am	Print Post
	Miller and Peregrine Extractors. Miller Extractor castings are available from Rodney but finished would be a big plus.


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: sorry no CNC lathe Reply #19 - Mar 17^th, 2023 at 10:58am	Print Post
	HarrisHighwall wrote on Mar 17^th, 2023 at 9:36am: My legs are too old and hurt too much to do manual machining... even on guns. heck even my own guns. I know about that, all too well. I have to sit on a stool to do anything at all. Phil

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curdog Full Member Offline Posts: 117 Joined: Feb 26^th, 2022	Re: What reproduction parts are needed Reply #20 - Mar 17^th, 2023 at 2:18pm	Print Post
	Amen to that! I had to give up machine and bench work full time after 30 years. Too many back problems. Got another gig with a little more exercise than basically standing still leaned over all day long. You don't think it would take a toll, but eventually it does.


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: What reproduction parts are needed Reply #21 - Mar 17^th, 2023 at 3:16pm	Print Post
	Well, we're in good company. Axel Petersen is quoted in a story written about him late in life: "I yust can hardly stand up anymore". One of my small (literally) salvations is an Emco Maier Unimat 3, which is so small that I can set it on my desk and while away the time modifying brass.

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marlinguy Frequent Elocutionist Offline Ballards may be weaker, but they sure are neater! Posts: 18211 Location: Oregon Joined: Feb 2^nd, 2009	Re: What reproduction parts are needed Reply #22 - Mar 17^th, 2023 at 7:32pm	Print Post
	curdog wrote on Mar 17^th, 2023 at 2:18pm: Amen to that! I had to give up machine and bench work full time after 30 years. Too many back problems. Got another gig with a little more exercise than basically standing still leaned over all day long. You don't think it would take a toll, but eventually it does. Every skilled trade has it's ailments that eventually catch up to guys who do the same thing day after day, for decades. I have bad shoulders, and bad feet, as do most of my coworkers who were electricians. Too many years standing on concrete, and too many years lifting equipment and tools overhead.

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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: sorry no CNC lathe Reply #23 - Mar 17^th, 2023 at 7:42pm	Print Post
	HarrisHighwall wrote on Mar 17^th, 2023 at 9:36am: 3 Fadal vertical machining centers w/ 4th axis and digitizing . By digitizing -- you mean can reverse engineer a part by scanning it?

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HarrisHighwall Participating Member Offline Posts: 48 Joined: Mar 4^th, 2023	digitizing Reply #24 - Mar 17^th, 2023 at 7:55pm	Print Post
	short answer: yes long answer: it's never that easy Renishaw touch probe with factory plus custom software allows me to create copies of imperfect original parts with an addition error of around .001 except at around 17 degrees of angle from the vertical where it's maybe .003 sometimes to do it right "real reverse engineering" requires: measuring cross sections and profiles after first figuring out which ones fixing the imperfections creating a solid model fast, accurate or cheap ... pick any 1.5


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: What reproduction parts are needed Reply #25 - Mar 17^th, 2023 at 7:58pm	Print Post
	I worked for Zeiss for 15 years. Fast, accurate, but not cheap. I'm totally spoiled when it comes to reverse engineering.

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HarrisHighwall Participating Member Offline Posts: 48 Joined: Mar 4^th, 2023	Re: What reproduction parts are needed Reply #26 - Mar 17^th, 2023 at 8:44pm	Print Post
	I have 2 Helmel manual CMMs Zeiss is a name that scares my wallet What do you mean by spoiled when it comes to reverse engineering?


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: What reproduction parts are needed Reply #27 - Mar 17^th, 2023 at 9:09pm	Print Post
	We could do a continuous scan of any surface, data density as close as single digits of microns. This built up what we called a "point cloud", and our software could reduce this to a 3D CAD model. We could even do this from a CAT scan, which led us to helping surgeons customize hip joints to fit the individual patient. That was 13 years ago when I retired. Heaven knows what they're up to now.

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HarrisHighwall Participating Member Offline Posts: 48 Joined: Mar 4^th, 2023	Re: What reproduction parts are needed Reply #28 - Mar 17^th, 2023 at 9:29pm	Print Post
	going from a point cloud to a cad model either takes a lot of time or money for software and then learning how to use it still the issue today Zeiss has a great reputation but I doubt playing with guns would generate enough cash flow to justify purchasing 10 years from now 5 year olds will be using photogrammetry on their cell phones to go from pics to solid model with free software ... but not yet


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: What reproduction parts are needed Reply #29 - Mar 17^th, 2023 at 10:31pm	Print Post
	Yup. I recall that the CAD end of this was CATIA, which then was $70k a seat. I was sorta hoping that in ten years some of this had filtered into the machine tool computers, but not yet, I take it. I've created some 2D models by tracing a flat part on paper, then photographing the image and jumping from there to a .dxf file using some raster-to-vector freeware I have. Accuracy only maybe .005" but good enough to get that guy in CA to laser-cut Model 44 link blanks. I hasten to point out that I'm no sort of CAD jockey - I can't even run AutoCAD. By the time I needed CAD for work I was in management and just hired whatever help I needed.

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