Ok so I am trying to cope with the linear guide costs but I already have my correct parts for Y. So I am working on completing that axis. I am turning the bed sideways so instead of 370 or 380 X 250 I can get the full 400 X 250 build volume. Also I am applying linear guides so I need a very specific piece to attach the mount/ base plate for the heat bed to the linear guides. And here is my design..