Ikea LACK Table Stacker (Screws optional)

I remixed two stackers together to get the best of both worlds. First of all this stacker can be used without any screws at all if you want to. This feature was taken from the "Ikea LACK Table Extension Stacker" by Koganei. But i also wanted to have a window holder build in so i used the "Ikea Lack raiser and window holder" by Latzenpratz. I also added optional screw holes that can be used for extra stability. The top is already a pretty tight fit so be careful not to break it. It will fit perfe