Box with Sliding Lid

I wanted a box with a lid for my dad to use as a gift box. He's going to use it for a gift he made for my brother Brandon. The included stl file has a blank lid without any text. There are a lot of really good boxes here but none of them were what I was looking for.
I added the letter B to the lid, since it's for my brother. I have included the .blend file so anyone can customize the box to their liking, i.e. make it bigger, wider, taller, etc. Also if you wanted to add your own text or designs to this thing you can. This is fairly simple to do in Blender. If anyone needs help with this feel free to reach out to me and I'll help out the best I can.

For some reason Slic3r PE and PrusaSlicer are terrible at slicing support material. They add way more material than needed and most of the time it sticks to the bed so badly I fight with removing it. For this reason I usually avoid support material if possible or slice with Simplify3D instead.

*See the printing instructions below.