How critical is the exact placement of the tonearm

When mounting a tonearm how precise does one need to be?

headsnappin05-16-2008 5:45pm

04rdking Details Discussions Posts This discussion Message User 178 posts 05-17-2008 at 02:58pm Copy Comment URL Report Comment Edit Delete It's hard for me to believe anyone could drill a hole that large in an armboard and get it within .01969 of an inch.... Then get the armboard mounted that precisely... I'm not saying it's not critical, just the nature of the drill bit that size.
04rdking Details Discussions Posts This discussion Message User 178 posts 05-17-2008 at 05:29pm Copy Comment URL Report Comment Edit Delete Zen, I design circuit boards. I deal with .001 inch every minute of every day. I have 3 points. 1) one wouldn't want that much "slop" in the hole size. Just tightening the arm would cause it to move more than that. 2) I'd bet you be surprised at how much runout the typical homeowners drill press has 3) at that size, the typical drill bit has a pretty large tolerance. IMHO, to get the hole that precisely located and sized, one would have to use a CNC controlled drill and a very expensive, high tolerance bit. Not to mention the fact that you are, usually, dealing with a fiberous material such as wood, or worse yet, mdf. Just my 2 cents.