1/4-20x1/2 socket head cap screw and thump screw knob.
Insert screw into knob.
7/16 aluminum rod stock. Roughly 1inch long. 7/16 fits in the lip on the outside edge of sterling tub. Rod stock drilled and tapped (1/4-20).
I then melted holes through the top of the lid as well as the lip on the tub. The thump screw then goes through the lid and tub.
The rod stock goes in the lip of the tub.. I did this in 4 place around the tub. Let me know what you think.
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