The Workhorse Printer is a large format 3d printer some friends and I have been working on for the past three years. The large 3d printer is a large scale modular machine platform that uses lead screw driven motion with a fixed bed / moving gantry.

https://3ddistributed.com/3d-printers/workhorse-printer/

BOM
https://drive.google.com/file/d/1gP2sXpk0kmG8WtHmKsT5NyTBm8-RnpTb/view?usp=sharing