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![](https://i0.wp.com/www.automaticprojects.com/wp-content/uploads/2023/10/IMG_1755.jpeg?resize=900%2C675&ssl=1)
This 2-color tree frog from Nervous System was released in 2014 but is still an excellent calibration test for dual-extruder printers.
This 2-color tree frog from Nervous System was released in 2014 but is still an excellent calibration test for dual-extruder printers.