The bi-metal heat break is the next evolution of the regular heat breaks that we know from our 3D printers. Let me first tell you what makes this multi-material assembly unique; let’s benchmark the ones I bought for my Ender-3 with extrusion tests and test prints and finally compare the standard Bowden solution to the $15 knock-off and $30 genuine part. Let me know down in the comments if you’ve ever used one of these heat breaks and if you’d rather do this upgrade instead of changing the whole hotend!

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