Anycubic Linear Plus External Blower Air Jet

thingiverse

This is a straightforward setup for achieving a precisely focused air jet at the tip of the hot end by utilizing an external blower. It works effectively, but it's very loud and only slightly better than the much simpler modification of the duct on the standard ANYCUBIC blower: [ANYCUBIC Kossel Delta Filament Cooler (Fan Duct)](https://www.thingiverse.com/make:639606). The external blower air jet mount is visible on the left in the cover photo, while the improved duct for the standard blower is shown on the right. The main difference lies in this external blower rig's ability to allow you to print very clean and very thin structures at or near full speed -- however, **after thorough testing, we do not feel that this is worth the trouble for most printing tasks**. The external blower used is an Intex Quick Fill 100, which is an AC-powered unit designed to inflate mattresses and other items. When running, it sounds similar to a vacuum cleaner and gradually gets warm, so I recommend turning it on only during the most critical parts of a print. The funnel attaches securely to the blower, and the 1/4-inch clear plastic tubing runs to the printed mount, which holds onto a metal strip on the printer's head assembly (the one intended for mounting the auto-leveling probe) thanks to a 1/4-inch x 7/8-inch ceramic block magnet. The blower, tubing, and magnets are easily obtainable (e.g., on the shelves of a typical Walmart). Although tight fits mean that glue should not be necessary, I did use a small amount of cyanoacrylate to help secure the magnet in the 3D-printed mount.