I was looking for a moat for KIB (Kid-in-a-bubble) that was easy to set up and solid, but I couldn't find a Japanese vendor.
There are only a few professional bubble artists in Japan, so there are no Japanese vendors selling tools for professional bubble art.
I was at a loss when I learned that importing it from Europe would be very expensive just for shipping.
I found out how to DIY on the wiki, but it's quite difficult for me ...
One day, I heard that there is a bubbler who makes a moat using a garden table (patio table).
I went to a nearby home improvement store and found a suitable product.
The table I got is made of polypropylene. It's made in Italy and costs about $ 50.
The diameter of the top plate is about 91 cm.
https://www.amazon.co.jp/dp/B077QBV8N2/
I made a cut in the top plate of the table, inserted a thin saw into it, and cut out the central part. (Saw for PVC pipe worked well.)
I made a simple hoop with galvanized steel wire and tried it.
It seems to work well!
The advantage is that it is cheap. I got this table for about $ 50. Also, all I needed to do was cut out the middle part.
The disadvantage is that this moat is narrow and the solution must be replenished frequently. And I had to make a thin hoop. It tend to fill up with foam quickly, so it's better to have a spray of alcohol.
So far, I am satisfied with its performance. I want to try it indoors.