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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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How do you measure runout on drill press?
I have a quill play in my Frox Shop 17" drill press.
When rotating with no load the runout is just 0.002" but if you move chuck with your hands back and forth test indicator shows 0.030 runout. Woodstock Int. (manufacturer of all Fox Shop tools) warranty guy is saying that I am not suppose to try to move chuck while measuring runout. "The right way" to measure runout is to do it while drill runs on lowest speed with no load. Quill set screw is already tighten to the point when I can hardly move spindle up/down BTW I just tied to drill 3/8 hole in 1/4 thick mild steel and can see that when drill bit is half way through "hole" is somewhat triangular. After the hole is through it looks pretty round with rough walls. Is it suppose to be like that or it's because of runout? Thanks, Alex |
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