Hollow Stainless Steel Spheres From 19 mm to 3000 mm

3000 mm diameter on the standard tooling. Above 19 mm there are no fixed steps, so an intermediate diameter costs the same as a round number.

1 mm suits small decorative balls, 2 mm is the usual default, and 4 to 6 mm is used where the piece is large, publicly accessible or handled roughly.

Yes, before the final polish. Send the hole positions with the order because drilling a finished mirror surface on site causes damage that cannot be corrected.

The seam is ground and blended until it no longer reads in reflection. On a mirror finish this is the step that separates a good sphere from a cheap one.

20 to 30 days after the deposit is received. Mixed diameter orders needing several polish batches sit at the top of that range.