I experienced a bug when I choose the model and select the metal type for the model which is steel, the game crashes. Just letting you guys know 
Does this always happen? Can you reproduce it? Do you get an error message you can post here?
I tried recreating it but I didn’t do it. I’ll let u guys know when I happens again.
Got a bug in the designer too:
When you made a model and double click on it to revise it, my game crashes. When i click on the button revise model it doesn’t happen.