The doughnut which was made with firing urethane

Urethane foam soft F 
It seems to make a fluffy sponge in this.
I will make the first time.

Making mix an A agent and a B agent.
10 seconds to 20 seconds, stirring...
I pour it into a doughnut type.

 

 It has been steadily inflated...Overinflated!
Amount there were many. I will make the following carefully.

It is a bit difficult.
I practice until I understand an art.

 I made the colored doughnut.

Like this!
It is a fluffy sponge donut