Found an answer by Minnesota's Department of Natural Resources.
For new, clear ice, 4 inches should be good for ice skating or any activity involving just a person's weight. They recommend double that thickness (8 inches) for white ice which has about half the strength.
We have a pond on our farm and often groom the ice for ice skating. We have a pretty simple 3-step process that takes about 20 minutes with a couple of people and gives us great ice:
Shovel off any snow. The melting/freezing snow really ruins your
ice. We use a metal bladed shovel which also helps to knock off any
bumps in the ice. (Some loose ice shavings ...
I don't ice skate and my main goals of working with ice are to get it gone. That said, if I did want to even out ice with the least amount of work and expense I would get a weed burner and a bottle of propane.
Inexpensive weed burns can be purchased for about $20 US it easily connects to the 5 gallon propane grill bottle, if you don't have a propane grill,...
It looks like to build a homemade Zamboni, you need some type of powered transport like a four-wheeler, riding lawnmower or a kid on a tricycle. Then you need a supply of hot water and something to spread it out behind the vehicle. The plans that I have seen usually have a water tank that has a hose going down to a PVC pipe with holes in it and a towel ...
Obvious try and keep people off the ice when it is soft.
Before Zamboni 3 or 4 workers had to scrape, wash, and squeegee the
ice. A thin layer of water was then added for the fresh ice. This
process was extremely time consuming, and Zamboni wanted to find a
more efficient way to resurface the ice.
Hot water is frequently ...
This is pretty much exactly what it sounds like. A large piece of ice is cut from a place where it isn't needed and moved to another place. This is done with for example chainsaws and axes.
Usually the part right under a bridge is the last part to freeze and those spots are very weak. To transplant ice there means to put some more adequate ice there (at ...
There are at least two lakes in Iran which are commonly used for ice skating during the winter.
One is Lake Zarivar.
From Wonderful Iranian Lakes:
Located in the ancient city of Marivan in Kurdistan province near the western Zagros mountain range, Lake Zarivar, locally known as “Lost Paradise” is a river which is constantly full of water rooted from ...
(I'm going to be using cm for this piece because they're more precise and because I'm used to them, imperial readers just keep in mind an inch is close to 2.5 cm.)
It depends heavily on all sorts of other circumstances. 4 or 5 cm can be enough. But it's probably not enough is there are a lot of people on the ice, if you're going out completely alone (this ...