custom made speaker stand legtips - rubber or metal - not good vibration

Look @ rubber cane/walking stick tips (no screw required).

If it's a tad loose use a few wraps of cloth half inch medical tape around the sides of the leg.

I need to look for replacements for my wooden cane (one I've owned/used off/on since 1973).

I'll start with Amazon, though my last tips were purchased locally and were made in the USA (2 of them lasted 20+ years and were mainly used on concrete sidewalks).

If made in China (not keen on their rubber/plastic products) I'll order a gob of them once I find a decent one, and store them away from air/heat.

Your requirements are not as exacting I would guess, but perhaps not as I do not fathom what stress the footers of speaker stands are exposed to via thousands of hours of use.

DeKay

Rubber component feet with recessed holes are cheap on Amazon and should solve the problem. I would use screwed in brass cones that sat on brass floor protectors. That would sound best and look great too.

Good job. Stands look good. They look a bit like Solid Steel SS-6.

@roxy54 

Rubber component feet with recessed holes are cheap on Amazon

I can't find anything remotely nicec :(

@grislybutter 

Here is a link to a bunch of mounts. I think the thinner the legs the further down the support.