Sugru Hotend Insulation for Rep2

After a few failed prints (as is normal with this machine) you will probably notice that that hot filament will bork your existing insulation pretty quickly. It is some sore of cotton fiber wrapped in what appears to be kapton tape. This just wont do. For me I noticed that the cotton fibers absorbed a considerable amount of PLA over the hours. It was pretty nasty. So I came up with this solution to not only fix the problem but prevent it all together.

Since this mod, I have noticed that my machine heats up noticeably faster and sees much less heat pollution beneath the build platform. The area directly beneath the nozzle sits about 15C cooler as confirmed by a laser thermometer whereas the surface of the insulation sits almost 35C cooler. There are no immediate visible changes in print quality, however this equation should, in theory, aid with bridging and increase the efficiency of your current filament fan.

Thanks for reading!