Klipper v0.13.0 replaces the ringing tower with a sweeping vibrations test, adds new accelerometers, and unlocks Z-axis input shaping for faster Z moves.
3D Printing
Printers, hotends, slicers, and filament, judged on what they change about the print rather than the spec sheet.
360-degree cooling sharpens overhangs on the Prusa XL+
Prusa XL+ 360-degree cooling spreads airflow evenly for cleaner overhangs and bridges, joined by GT1.5 belts and a 20x faster eddy-current tool sensor.
Bondtech's INDX hardened nozzles are only HRC 30 to 32
Bondtech INDX hardened nozzles measure HRC 30 to 32, about half the 55 to 60 the word implies. Treat them as long-life brass, not tough tools.
23.5 mm³/s flows through the Revo High Flow nozzle
The Revo High Flow nozzle hit 23.5 mm³/s in independent tests, and the half-watt rule shows the melt zone caps a hotend long before watts do.
Bambu's Authorization Control now has a legal test case
Bambu Lab's Authorization Control System gates printer control, and a 2026 cease-and-desist put the AGPL question in play. Here is the dated timeline.
Tungsten carbide outlasts hardened steel by half on the X2D
Tungsten carbide nozzle vs hardened steel on Bambu's X2D: HRA 90 against HRA 74, about 50% more life on abrasive filament, and almost no retuning.