I like the design concepts I see, direct and effective.

IMHO, If you simply swapped out the bottom two extrusions for 1545 you would have a huge up grade and increased z cappy!

Here are some links to Aspire to inspire.

https://www.youtube.com/user/Vectric

Free CNC Projects

Products - Aspire

80/20® Inc. - The Industrial Erector Set®