Serious question, I just found out a 1 micron runout on a tool holder can cause a 0.0005" error at the tip of a 6 inch tool.

Read it in a Sandvik technical paper, blew my mind a bit. How much runout do you guys actually see on your machines?

2 comments

2 Comments

Wait, you guys are actually measuring your runout? I just get it close, make a test cut, and swear a lot until the part looks okay. In my experience, if the machine is old, you're probably chasing way more than a micron just in the spindle taper.

elizabeth2206d ago

Honestly the biggest factor people miss is temperature. That old machine's spindle grows a few thou after lunch and your morning setup is trash.