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.
Depends on the part, there are 2 at work here (from the original mk3)
The first one is the angled fan. The stock fan you get is smaller, but I wanted a quieter fan and this improves cooling by 20% (according to the author). But if you replace the stock fan spot, it will hit the Z axis when it homes. With this mod i can have the bigger fan which cools it down faster (the hotend when done printing) and is quieter when runninghttps://www.thingiverse.com/thing:3484443
The second is this part, I customized it and bent it so I could fit all threehttps://www.thingiverse.com/thing:2978427
This improves cooling for the nozzle itself, helps with bridging and supports and whatnot. Example pic here https://cdn.thingiverse.com/renders/ee/73/f7/64/cc/f0b72f75684a01b74ff0f459a9f7b898_preview_featured.jpg
The first mod helps a tad, but not so much where you would see a difference probably. But the second mod (with the 2 duct fans) does help parts print better (at least overhangs), you would probably see more of a difference in that one if anything.