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Ever so slight platter wobble

I have a bix DIY table that I got from a friend. I noticed that when I look at the bottom of the platter or actually put a solid object underneath the edge of a spinning platter, every revolution the platter will touch the object. You can hear it. The wobble is tiny less than 1/2 mm at the edge. I dont have an arm for this table yet so I do not know how it sounds and I am wondering if I should even keep it. Will 1/2 mm impact sonic performance. Scientifically speaking it should not, right? Since whenever the platter dips, so will the tonearm. Do non diy or high end turntables also have tiny amounts of wobble?
malammik

Showing 2 responses by ptmconsulting

ptmconsulting
1,000 posts
 
Try unseating the platter from the spindle, turning it about 1/4 turn and reseating it. You may have to do this more than once to get it level and straight. Sometimes the machining is just a wee bit off, but you can usually find a spot where everything fits cleanly and straight.

Enjoy,
Bob
ptmconsulting
1,000 posts
 
I'd be careful about any kind of washer, since that would intruduce an interface between platter and spindle that is not a firm and tight connection and can affect your sonics.

Try moving the platter about the spindle and see how that works. I had the same problem on my old VPI and this is what they suggested to fix the issue, which it did. Make sure it is pressed down firmly after seating. On the VPI this was done by cranking down the threaded record clamp, but I don't know what that means on your table and if it has a record clamp that is threaded or not.

Good luck,
Bob
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