I was looking at the flashforge website at a DIY enclosure for the 5m and thought to check eBay and low and behold they are there and on sale.
You just have to print the rest of the enclosure, the kit comes with all the screws, magnets, drag chain, ptfe tube, tools and side top and door plexi panels.
go to this website to grab the stl files for the enclosure https://wiki.flashforge.com/en/knowledge_corner/printer-mod-…
or contact the seller (from listing) - Self-printed 3D Parts required. For parts files, please contact us for Installation Manua (PDF)
Do you plan to print with ABS/ASA?