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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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Making an abrasive wire saw?
On Saturday, March 26, 2011 6:32:12 AM UTC-7, N_Cook wrote:
I have some 1.5Kg breaking strain (as it stands) 0.08mm diameter tungsten wire that would be ideal for passing through a .2mm gap and then a fairly light action cutting job. How to load the wire with grit/ source of abrasive grit? Abrasive? With tungsten wire, why not EDM? Tungsten is refractory, but not noted for abrasive embedding capability. Soft iron, or brass, is a more typical wire-saw candidate. Rockhounds often use coathanger wire... |
#2
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Making an abrasive wire saw?
whit3rd wrote in message
.... On Saturday, March 26, 2011 6:32:12 AM UTC-7, N_Cook wrote: I have some 1.5Kg breaking strain (as it stands) 0.08mm diameter tungsten wire that would be ideal for passing through a .2mm gap and then a fairly light action cutting job. How to load the wire with grit/ source of abrasive grit? Abrasive? With tungsten wire, why not EDM? Tungsten is refractory, but not noted for abrasive embedding capability. Soft iron, or brass, is a more typical wire-saw candidate. Rockhounds often use coathanger wire... Skimming Dremmel and parting disc over a sheet of fine grade silicon carbide wet & dry, in a paper cup, gives a source of fine grit . Now how to sputter spot weld to wire, whether fine W, Cu , Al or ni-cr that I have around. |
#3
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Making an abrasive wire saw?
"N_Cook" wrote in message ... whit3rd wrote in message ... On Saturday, March 26, 2011 6:32:12 AM UTC-7, N_Cook wrote: I have some 1.5Kg breaking strain (as it stands) 0.08mm diameter tungsten wire that would be ideal for passing through a .2mm gap and then a fairly light action cutting job. How to load the wire with grit/ source of abrasive grit? Abrasive? With tungsten wire, why not EDM? Tungsten is refractory, but not noted for abrasive embedding capability. Soft iron, or brass, is a more typical wire-saw candidate. Rockhounds often use coathanger wire... Skimming Dremmel and parting disc over a sheet of fine grade silicon carbide wet & dry, in a paper cup, gives a source of fine grit . Now how to sputter spot weld to wire, whether fine W, Cu , Al or ni-cr that I have around. FWIW, abrasive-wire cutting machines were being developed in parallel with, and in competition with, wire EDM up until around 1978. I saw and reported on two of them at IMTS-78. They used brass wire -- hard-drawn and not annealed, I think -- and diamond grit, which was wiped off and recycled as the cut progressed. These were die-cutting machines, used for cutting hardened or unhardened tool steel, typically D2 in those days. By IMTS-80, they were on the way out. Wire EDM had progressed to a point where its cutting rate and machine cost made the abrasive-wire machines non-competitive. -- Ed Huntress |
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