Hey guys, need some help here if you can.

So a long while back, I came across videos of a new type of training frame for chainsawing. It may have even been here.

Basically, it was a large, round, yellow frame run by hydraulics (or maybe pneumatics) that logs were inserted into.
The frame could then twist, or apply stresses in various ways on the ends of the logs, simulating a log trapped by other tree falls, such as found in bad windfall conditions.
The chainsaw user would then be trained in how to correctly saw quickly, efficiently, without danger of the log or saw snapping back or becoming jammed, learning how to guage and feel what stresses the fallen log was under.
I think it may have been in a scandinavian language, hence the difficulty I am having in finding it.
They were very helpful videos, it would be much appreciated.

Also, advanced chansaw technique thread.