Ikea Lack Print Box Air Circulation (using 70mm & 80mm fan)

thingiverse

I'm using Ikea Lack as a print box, elevated 100mm. As expected, the hot air accumulates on top, where the bottom remains relatively cooler. After 10 hours of printing, the top is approximately 5 degrees hotter than the bottom. To achieve more even temperature within the print box, I created air circulation pipes/stands that fit standard 70mm fans to circulate top and bottom air. The pipes come in three heights: 50mm, 100mm, and 150mm, with one end featuring a mounting plate to secure a 70mm fan. You can print "two" parts and join them together using tape, resulting in both ends having mounting holes. The stand is 50mm long, requiring you to place one at the bottom for air intake/outflow space. I recommend mounting the 70mm fan on top, blowing air upward to minimize noise. This setup produces the least amount of noise, as seen in the photo. This design isn't optimized for aerodynamic or thermodynamic efficiency, but it works effectively. Edit: I've added an 80mm fan version using the same basic design. Currently, I'm utilizing a 50mm stand paired with two 150mm pipes and a Noctua 80mm fan blowing air upward. Printer Settings: Printer Brand: Prusa Printer Model: Prusa Mk2 Rafts: Doesn't Matter Supports: No