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A 62 year old toolmaker in Dayton walked me through a chatter fix that 3 textbooks never made clear
A few weeks back I was running a batch of 4140 steel parts on an old Haas lathe and getting this awful chatter on the finish pass. I had already tried slowing the feed, adjusting the depth of cut, and even re-chucked the part twice. Nothing helped. A guy named Walt who has been in the trade for 62 years came over to my bay at the shop here in Dayton and watched for about 30 seconds. He asked me one question I had never thought about: how far is your tool hanging out of the holder? I checked and it was almost 2 inches. He told me to choke it down to under an inch and take a lighter spring pass. Chatter was gone on the next part. I have read a lot of books on speeds and feeds and not one of them ever mentioned tool overhang as a first thing to check. Sometimes the old guys just know stuff you cannot learn from a PDF. Has anyone else had a veteran in the shop drop one small tip that changed how you set up tools?
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valwest2d ago
Walt asking about tool hangout reminds me of my dad checking tire pressure before messing with anything else on the car. Seems like the simple stuff gets skipped because everyone wants the fancy answer first.
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