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All Springer/NP/PCP Air Gun Discussion General => Machine Shop Talk & AG Parts Machining => Topic started by: tkerrigan on May 31, 2019, 01:52:35 AM
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I need to drill about an .080" diameter by about .5" deep hole in the end of a chuck jaw. Any chance a carbide bit would work or should I just have it EDM drilled? Regards, Tom
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Tom
Are you talking about a lathe chuck jaw?
You might want to see if a file will cut the jaw, if it does,
then a good sharp carbide drill bit should drill it with no problem,
and if you don't know, a drill bit will cut a slight larger hole than it's listed size.
Tia,
Don
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Do you have access to soft jaws that fit your lathe?.You may get by with drilling with a 2mm(.078) bit , depends on how close to .080 .you need.
Do you have a scrap jaw you can test on first, thats always nice to see how things may go?
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What I want to do is to bend a short 90° bend on the end of spring wire and insert it into the chuck jaw and use transfer punches for winding springs. This would speed up the process tremendously. I made a .5" x 3" mandrel with a through hole that mounts to the tool holder of the lathe and use threading setup to make springs that look just like you buy. Turning a mandrel to mount in the chuck and drilling a hole for the wire to fit through really slows things down. Then you have to cut the wire with the tip of a side cutter. Regards, Tom