We are weekend warriors so we wanted to drain the water table after each use. Got tired of the OEM drain solution - the word “lame” comes to mind. Wanted flush drains that actually drained all the way and wanted to use standard plumbing for good flow and simple design.
We found these stainless bar sink drains at Lowe’s. About $12 or so.
The drains are a little over 3" in diameter. And have enough depth that we can use some filter media to keep all the ship-wreck rusty steel out of our drain.
To get a flush fit we needed to dimple the sheet metal. I’ve seen a few folks using standard dimple dies and a few using shop-made ones. Those seemed more derived from sheet metal reinforcement vs something specific to this application. Just need a flat recess like what you’d expect on a sink…cuz it’s a sink drain.
Did a little design work in F360 and came up with a dimple die I could machine on our lathe.
Tested hole size on some scrap sheet metal:
And tested out the dimple die:
We hit our dimensions on the first go. Pretty happy with this solution.
More to come: building out the plumbing.