Do you like to mindlessly stare at your prints or want more accessible space to the nozzle when printing? If so, the standard Hexagon cooling fan on the Lulzbot Taz 6 is very much blocking your view, and you probably hate it.
This fan duct/mount elevates the 40mm fan upwards to give you better view of your prints.
All original mounting bolts are reused and screws directly into (thread tapped) plastic. Remove the washer on original long mounting bolt.
- fan is tilted upwards 10 degrees for better position
- smooth interior air path
- clears hot end wiring harness
revision v2 - increased duct exit opening for more airflow, rotated model to printing orientation.
revision v3 - raised duct by 2mm to minimize gap between duct and hot end mounting plate.
This duct was designed to be printed without support material. There are some pretty steep printing angles but the print path radius should help. If you feel supports are necessary, 60-70 degree "overhang angle for support" is recommended for minimal interference.
Print in ABS, especially if your Taz is sitting in an enclosure. PLA will slightly deform from heat and the long mounting screw will need to be re-tightened over time.
No heat-set inserts needed, but you must drill and tap
To reduce cost and weight, no heat-set inserts are used on this duct. Threads can be tapped into ABS and it's more than plenty strong.
These holes are drawn to 2.4mm diameter. I recommended drilling the holes with a 3/32" (2.37mm) bit before tapping with a M3 metric tap. Use your best judgement when tapping plastic, cut slow and be careful when backing out the tap.
Some overhang cleanup might be needed with x-acto knife around the counter-sink hole for the long mounting bolt.