Ender-3 Hot-End Fan Housing Modifier
Description
Hello everyone :) Update-1: 30/03/2021 I added a cut-out pdf template for easier use. Please set your printer on actual print size. Since Creality is becoming one of the popular machines among the filament consumers, we decided to add some of their printers to our lab to find the optimum setting of our filaments on their printers and to be able to serve our customer better :) In the process, we realized that at least for Ender series which we started with now, there is a principal error in the design of the housing of the extruder fans which affects the performance of the printer when printing cooling-sensetive filaments like ABS, PETG and others, we did some tests and came up with some quick fix which worked pretty well. We shared it with our friends in Creality and now they are working on the idea to come up with an optimum design. Looking at the Ender series extruder cover, you realize that they just designed that extruder cover which hosts both hot-end fan (HEF) and print fan (PRF), as simple as it could be and without considering the airflow of the fans which is very essential when you try to print cooling-sesetive filaments like ABS, PETG and other engineering filaments. And because of that, Ender-3 cannot print such filaments with its stock fan setup!!! it is literally impossible! The reason is, the HEF has open way out to the bed and to the printing part! and since the HEF is continuously working with 100% power from the moment you turn on your printer, it will always interfere with the controlled cooling process of the PRF! Another word, any setting you do in your slicer software under the tab of the filament setting to control the cooling in order to prevent the filament from warpping, will get messed up with the overcooling caused by the HEF! As a result, with the stock fan setup you cant control how to cool the filament and consequently, you cant stop the warping of filaments like ABS! they warp and they leave the bed at the very beginning! To solve this issue, you need to separate the airflow of HEF and PRF from each other in a proper way so each one can do its own mission. We tried a very simple and classic trick which worked good and now we can print ABS, PETG and other filaments easily with Ender-3 without any printer enclosure. The design is attached, you can simply cut and make it out of a tin can and fix it with two little screws on the bottom of the extruder cover as shown in the photos. In next step, it will be great to add this with a 3d-printed duct extender for the PRF to get its airflow more concentrated on the printing part. Print Test Video: https://youtu.be/4_9NLm9v0W0 Filament used in this project was, Filatech ABS white color 1.75mm +/-0.03mm Please share your experience and valuable comments.
Statistics
Likes
17
Downloads
0