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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Basic CNC Where to Start
I've spent much of my spare time this weekend reading on-line about various
CNC type operations in wood and metal. Looks like for big stuff in metal you gotta chunk out about ten grand to start for a machine. For moderately small stuff there looks to be some machines using a rotary tool that you can be up and running including software for about $1500, but the real machinists I have talked to so far seem to think those will not be very accurate due to the side stress on the motors and the quality of the bearings. For a little more a couple outfits have regular milling machines converted to cnc operation in the $2600 to $4000 range. They look pretty good, have good initial precision as well as accuracy, but alas, their working range is smaller than the rotary tool machines. Start looking at bigger working range of travel in even two axis and the price spikes up quickly. I am looking for a basic CNC machine that I can do plaques upto 12 by 12 give or take, and some prototype work in aluminum for molds to pour lead and plastics. Something easy to setup and use, that will work reliably, and that I can afford for hobby use, and that I can do my modeling on my PC. Where do I start? I looked at adding a CNC kit to a mill myslef, but most affordable mills are to small to do some of the work I want to do. Am I back to looking at the rotary tool on rails setups? |
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