Brand new Technics SL-1210GR platter wobble ... disappointed!

Bad casting. Send it back ASAP. That is bad enough that if you play a test tone you will hear it wow.

So much for a quality product. The box would have to have significant visible damage for shipping to have done that. Just poor quality control.

Just happens, many reasons, though platter has strengthening ribs somehow a good amount of force deformed it.
Under warranty, ask for replacement.

G

mijostyn

... Just poor quality control.

Yup, it should never have left the factory. They should be grateful for the OP to return it.

The deformation is also in two spots,  not one, so it's impossible for it to be a side impact, as that would be one wobble for the spindle, not two unequal length ones per single rotation.

So it appears to be a platter wobble.

the way to check that is to lift the patter and turn the spindle a third of a rotation or half a rotation and then drop the platter back down onto it again, with the platter having done no rotations at all.

and check the wobble again to see if it changes it's character.

Wait... there IS a way to have two wobbles per rotation, now that I think about it. 

Where the spindle is bent and the spindle hole on the platter is stretched and/or the platter body itself is bent. That would be two separate wobbles if not aligned or one big one, if they are lined up. A single sharp hard impact would create the single big one that could be moved about to be two smaller wobbles.