5mm to 21mm Step Mandrels

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5mm_7mm_9mm_11mm_13mm_15m_17mm_19mm_21mm - Step Mandrel Mandrel 1 leaps from a 5mm Circumference, then surges upward in even increments to a 7mm Circumference and culminates with a 9mm Circumference. Mandrel 2 launches at a 11mm Circumference, then bounds up in even increments to a 13mm Circumference and concludes with an 15mm Circumference. Mandrel 3 takes off from a 17mm Circumference, then soars upward in even increments to a 19mm Circumference and lands with a 21mm Circumference. Each Mandrel stands at an impressive 150mm High. Perfect for Metal Model Building like Metal Earth, Piececool and other brands. Print the even numbers one color and the odd numbers different color. Print them at a 50% infill Keep checking back. I plan to make all kinds of tools for 3D Metal Model Building. So I will be adding more in the future.