That would be great...but I don't have the metal frame, it's just an example I found online. I don't have the expertise to make a metal frame, but maybe we could do something similar with wood? I was thinking velro would be a good for the fabric :)

Do you have a picture of the sink (especially the bottom) and the dimensions? That might help people make suggestions.

Maybe these instructions for building a garden sink would help?

Here's a link for building a temporary sink base to a vintage sink. Lol, I guess they can't imagine anyone wanting it permanently. ;) A nice wood trim piece could be added to the front.

[2x4 sink base[(https://www.houzz.com/discussions/how-to-make-a-temporary-sink-base-dsvw-vd~245525)

Oh, sorry, even though the title of the Houzz article is 'How to make a Temporary Sink Base', there are no instructions. :[

We had exactly that sink style in our last house. The carpenter ( but it was a very simple job) made a frame out of 3x3. A rectangle and four legs. The Belfast sinks sat on it. We used Velcro on the sink front stuck on with araldyte and attached the other side to the curtain fabric. We used several sections of curtain fabric so that we could easily lift one bit to view behind. I would show you some pics but we moved from that house two years ago and I can't find any pics

It was 3x3 softwood. Sorry forgot to add that

Since you have a single sink, maybe something like this? There would be a support on each side of the sink. Again, no instructions--just that it's whitewood and 2x4 yellow pine. Then use a nice trim piece, as I suggested in my previous post. I'd put a tension rod just under the apron, so that it would be easy to change the skirt.

I used an old lab table base (top was used in my kitchen) to house my potting sink. It's not a perfect fit, but with your salvage expertise, maybe you could find a used table the right size, remove the top and replace with your sink. Then use the table top for the cabinet bottom, or a shelf.

Old sink used for potting sink.

Hang that bad boy off the wall studs and forget about it.

Thank you all for the ideas! I'll read through them and see what might work :)

Lavender, I found another picture that might help. It looks as if 4x4s were notched for 2x4s. You wouldn't use casters, of course, and you could adjust the height of the cross piece for a shelf.

There's a perfect place for a tension rod in front of the apron.