Sardo rack.

[fan-tum]

Was it fast and easy to make a tight rack?

 

[RandyinHawaii]

I found it to make a tight rack, but didn't find it to be fast.

 

[boogieman]

I've never used one but the consensus was that it worked by training the table, aka tapping balls to make divots in the cloth for them to rest on.

I think it was a gimmick but man it looked neat on tv.

 

[Bob Jewett]

I've never used one but the consensus was that it worked by training the table, aka tapping balls to make divots in the cloth for them to rest on.

I think it was a gimmick but man it looked neat on tv.

Yes, the table was supposed to be tapped/trained before use but I think the mechanism kept the divots/craters in the right places.