Anti-clogging Enhanced Cooling Hotend Cover, Customized Full-Coverage Version Print Head Front Cover Panel for the A1, A1 mini, essential for enclosure

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Please review the following instructions thoroughly before printing：

This is a visually upgraded version of the previously popular lightweight heat dissipation enhanced hot end cover, significantly improving the appearance while maintaining the same heat dissipation enhancement capability It offers a custom pattern feature (instructions below), with overall performance that is nearly perfect If you pursue ultimate simplicity and lightweight design, the previous version can still be printed

This is a hot end cover that can effectively enhance hot end (actually cold end) heat dissipation and reduce clogging risk The principle is simple: by optimizing the airflow path, the hot end cooling fan's airflow is directed to cover all heatsinks as much as possible, and the hot air blown from the right side of the heatsink is quickly expelled

Design details:

• The left side of the hot end heatsink is enclosed to prevent cold air leakage and will not obstruct any airflow towards the heatsink; the right side is fully open, which helps to expel hot air and maximize the fan's cooling capacity
• Gaps are left between the cover plate, heatsink, and silicone sock, which neither affects the heatsink's cooling efficiency nor causes the cover plate to deform due to heat Tested to confirm that hot end covers printed with PLA material can also be used normally
• Designed with 3D printing characteristics fully considered: no supports, all sharp edges have subtle chamfers, making them safe to handle, and the print profile has been carefully optimized for direct printing
• Same snap-on design as the original panel, making installation easy

Pattern customization method:

A customizable hollowed-out version has been specially designed Simply select "镂空 hollowed-out" (Hollowed-out) in the object settings, then adjust these three parameters: sparse infill density, sparse infill pattern, and infill direction, to customize different hollowed-out patterns (do not modify other parameters under this tab)

Understanding: Recently, I've found that many friends don't quite understand the causes of clogging, so let's provide a general explanation There are two main reasons for clogging The first is due to impurities in the filament, which is unrelated to heat dissipation, so I won't elaborate The second is caused by overheating of the extruder gears and the cold end (the area covered by the hot end heatsink) The filament softens and deforms from heat before it even enters the nozzle, leading to clogging But why do many beginners not experience clogging That's because the default printing speed in Bambu Studio is relatively fast (if no parameters are changed, the maximum speed will never be below 10mm/s, and acceleration is also very high) The filament is pushed into the nozzle before it has a chance to soften and deform from heat after entering the cold end Therefore, unless printing PLA in an enclosure with the door closed, clogging is difficult However, high-speed printing requires higher part cooling fan speeds (in the 'Cooling Mode' interface under 'Filament Settings') Forcing cooling on the print with a fan will lead to poorer layer adhesion Therefore, sometimes to achieve better strength, both printing speed and fan speed need to be reduced simultaneously (especially for overhangs) When printing speed is reduced, the probability of clogging naturally increases In short: The cost of improving layer adhesion by reducing speed is a higher risk of clogging There are too many technical details regarding reduced-speed printing, and I also learned them from other experts, so I won't go into detail here Interested friends can search for themselves on social media

My other works: Fts | Published - MakerWorld