Hi Eddy,
I´m glad my wife didn´t read that. You should have seen her look when I was heading for the playground in the attic with two bins of dirt back then. But as you write, you might have seen that too already...
We´ve got a spot in the garden where my son and I can dig when the weather is fine. The other times box in the attic is the next best thing.
The plastic is definately lighter than normal dirt. If you compare it to the "orginal" it´s like dry sand. The lightness shows when openig the bucket, it slips to each side, not easy to control over the truck. You can see this on real excavators loading typical dry sand. The buckets are shaped differently to handle that problem.
https://www.youtube.com/watch?v=gp757lSVzZI about a min in
The same problem is with driving on it. As you cannot do that on dry sand in real life, you won´t be able to climb that pile shown on the pics. Neither the Wheeloader L576, nore the Tracked-Loader LR634 will do that. They just sink, pushing the material away.
Last weekend I emptied three batteries on the LR634 as it got a new driveline. The chain itself has no problem with the small plastic lying around, as mentioned not beeing able climb a bigger pile. The Tyres of the trucks fill with the small parts and have to bee cleaned before a "real ride"
Hope that helps a litte.
bye
Ulrich