Fake Ikea lack table extension 10cm (leg thickness 4.5cm*4.5cm)

I bought some fake Ikea lack table from Taobao. Unfortunately, the thickness of all the parts is 4.5cm instead of 5cm. I had to build one from scratch. Please measure your table leg thickness first before printing this part (make sure it is 4.5cm). The holes are meant for M3 self-tapping screws. It shouldn't be a problem if you don't want to screw, but I strongly recommend it, it makes the stack a lot more rigid.