Turntable Centering Tool for 5" Speaker + Adapter

Motivation:

A turntable is a great helper for speaker repair.
This centering tool helps to use a simple 32cm glass turntable (cost ca. 5€)
as base for a holder of 5"-bass speakers with a 68mm magnet.
The weight of the glass plate gives a good haptic feeling and allows continuous rotation when working on the speaker.

Adapter for other magnets:

With a simple mechanical adapter (adaption to different magnet diameters, shapes and heights), the turntable with centering tool can be used for various speakers as workbench.
The adapter ring has a slot, so it can adapt to small variations of a magnet.
The adapter included here allows to use a 66mm magnet of a large 10" bass speaker.

Printing:

Center part printed with Sunlu TPU 95A on a Textured steel sheet.
No support needed.

Arms printed with Sunlu PLA+ on a Satin steel sheet.
I recommend printing the arms with a brim to avoid material lift-off on the far ends.
No support needed.

Adapter printed with Sunlu PLA+ on a Satin steel sheet.
No supports needed.