This design provides ventilation holes on top of the printer to allow hot air to come out, thus preventing the chamber temperature from getting too high to cause a clog when printing low temperature filaments such as PLA. The ventilation holes can be closed when printing high temp materials.

In terms of design philosophy, it goes for simplicity and reliability. Instead of using sliding panels or rotating flaps to open or close the vent holes, it simply uses big open vent holes for less restricted air flow when open, and well-fitted plugs to close the holes for good insulation when needed. Having no intricate moving parts makes it more reliable to use. Aesthetically, it has a simple and clean look.

Print profile is provided. The 3MF file has 4 plates. The first 3 plates are to be printed with PETG so the top vent can be used while printing high temp filaments. The last plate is the plugs storage tray, to be printed with PLA. No support is needed. If one decides to download the raw STL files, please be notified that not all the parts come with correct orientation on build plate. In Bambu Studio, the Auto Orient feature can be used to place the parts correctly onto the build plate.

Easy assembly and installation. Instructions are in a PDF file among the STL files for download. Photos are extensively used in the step-by-step instructions for easy following.

Prototyping and testing were done on X1 carbon printers. It has not been tested on any other printers.

Other materials needed: Insulation tapes about ½ inch wide and 1/8 inch thick. This is for providing a good seal between the glass lid and the top vent, to absorb vibration and to protect the glass lid. I chose not to use TPU prints because some printers have been reported having trouble printing TPU. Also an insulation tape provides better seal and protection. I put the link to the tape that I use from Amazon in the instruction because external links are not allowed here in the description.