Custom picture frame, generator

This picture frame generator was created to allow me to create custom print size frames. Enter the dimensions of the picture in mm and produce a frame that fits! I've had lots of issues with the preset ones. Variables:print size in mmwidth and depth of the frameradius on the edge of the framethickness of the picture cavity, allowing for clear film cover and or backing card, thick prints?There are two stand inserts which fit fairly well, and allow portrait or landscape aspect. I've tested the code and it seems to hold up fairly well, but like most things in life if you push it to hard it will break :). Let me know if you have any issues and or suggestions and I might be able to help.