MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
4040 fan??? Do you mean a 4020 fan? There is a Dual 4020 parts cooling fan duct STL in the files. If you want a single 4020 fan parts cooling duct there is a remix for that here: https://www.thingiverse.com/thing:3455775. But I tried looking up a 4040 fan and found nothing. Point me to the fan you want to use and I will see what I can do. (it will be added to my long mod request todo list).