{"id":7,"date":"2025-11-13T13:22:29","date_gmt":"2025-11-13T18:22:29","guid":{"rendered":"https:\/\/northforge3d.com\/forge-updates\/?p=7"},"modified":"2025-11-13T13:55:19","modified_gmt":"2025-11-13T18:55:19","slug":"why-we-chose-0-9-stepper-motors-for-the-deuce-dual-gantry-printer","status":"publish","type":"post","link":"https:\/\/northforge3d.com\/forge-updates\/deuce-updates\/why-we-chose-0-9-stepper-motors-for-the-deuce-dual-gantry-printer\/","title":{"rendered":"Why We Chose 0.9\u00b0 Stepper Motors for the Deuce Dual Gantry Printer"},"content":{"rendered":"

\nAt NorthForge3D, every design choice we make for the Deuce<\/strong>\u2014our dual-gantry, CoreXY\/IDEX 3D printer\u2014is intentional.
\nOne of the biggest decisions in a high-precision motion system is the step angle<\/strong> of the stepper motors driving the X, Y, and Z axes.
\nFor the Deuce, we chose 0.9\u00b0 stepper motors<\/strong> rather than the more common 1.8\u00b0 variants.
\nHere\u2019s why that choice matters\u2014and how it leads to finer control, smoother motion, and higher-quality prints.\n<\/p>\n

\n

What Is a 0.9\u00b0 Stepper Motor?<\/h2>\n

\nStepper motors rotate in very small increments called steps.
\nA standard 1.8\u00b0 motor<\/strong> rotates 360\u00b0 in 200 steps.
\nA 0.9\u00b0 motor<\/strong> rotates 360\u00b0 in 400 steps\u2014double the mechanical resolution<\/em>.\n<\/p>\n

\nThis means smoother motion, finer positional accuracy, and more control over tiny movement increments long before microstepping is applied.\n<\/p>\n

\n \"LDO
LDO 42STH48-2004MAH \u2013 a high-precision 0.9\u00b0 NEMA-17 motor.<\/figcaption><\/figure>\n
\n

Why Finer Step Angle Matters in the Deuce<\/h2>\n

1. Higher Native Resolution<\/h3>\n

\nBecause 0.9\u00b0 motors provide twice the steps per revolution, the controller can position the toolhead with finer mechanical precision.
\nIn a dual-gantry printer like the Deuce\u2014where both toolheads must move smoothly, predictably, and accurately\u2014this added resolution offers a measurable advantage.\n<\/p>\n

2. Smoother Motion and Lower Vibration<\/h3>\n

\nWith half-sized steps, the motor transitions more smoothly between positions, reducing vibration.
\nThis is supported by real-world engineering commentary:\n<\/p>\n

\n\u201cSmaller step angles\u2026 make fine movement of the stepper motor and result in higher resolution\u2026 ideal for applications such as 3D printers.\u201d
\n
\n\u2014 Mechtex<\/a>\n<\/p><\/blockquote>\n

\nLower vibration directly improves print surface quality\u2014especially for curved surfaces and fine details.\n<\/p>\n

3. Better Surface Finish in High-Detail Printing<\/h3>\n

\n\u201cThe Moons\u2019 0.9\u00b0 motor produced exceptional surface finish\u2026 the 0.9\u00b0 motors\u2026 still produced cleaner prints.\u201d
\n
\n\u2014
\nPrusa Community Threads
\n<\/a>\n<\/p><\/blockquote>\n

\nWhile this is community-based evidence (not a formal lab study), it aligns with the mechanical reality:
\nsmaller native step increments reduce micro-artifacts such as ringing and vertical fine artifacting (VFA).\n<\/p>\n

4. Improved Control in a Dual-Gantry\/IDEX Motion System<\/h3>\n

\nThe Deuce uses two independent toolheads on separate gantries.
\nSynchronizing motion, maintaining positional accuracy, and avoiding artifacts is far easier when each axis can be controlled in finer increments.
\nA 0.9\u00b0 motor allows the firmware to \u201ctrim\u201d motion more precisely\u2014resulting in cleaner dual-tool transitions and smoother tool changes.\n<\/p>\n

\n \"Side
Side view of the LDO 42STH48 motor used in the Deuce motion system.<\/figcaption><\/figure>\n
\n

Why We Chose the LDO 42STH48 Series Motors<\/h2>\n

\nFor the first production release of the Deuce, we selected the LDO Motors 42STH48 series because they offer:\n<\/p>\n

    \n
  • 400 steps per revolution (0.9\u00b0)<\/li>\n
  • High torque in a compact 48 mm NEMA-17 form factor<\/li>\n
  • Excellent thermal handling<\/li>\n
  • Proven reliability in high-end CoreXY designs<\/li>\n<\/ul>\n

    \nTheir reputation in the 3D printing community\u2014and consistent spec quality\u2014make them the ideal choice for a premium dual-gantry build.\n<\/p>\n

    \n

    Trade-Offs and Considerations<\/h2>\n

    There are a few things to account for when choosing 0.9\u00b0 motors:<\/p>\n

      \n
    • Higher pulse rate required<\/strong> \u2014 your motion controller must output twice as many steps.<\/li>\n
    • Slight torque reduction at high speed<\/strong> \u2014 more steps per rev can reduce peak RPM torque.<\/li>\n
    • Driver tuning is more sensitive<\/strong> \u2014 current, microstepping, and cooling matter more.<\/li>\n
    • Cost<\/strong> \u2014 0.9\u00b0 motors are more expensive, especially in higher-temperature variants.<\/li>\n<\/ul>\n

      \nFor a printer like the Deuce\u2014designed for precision and surface quality\u2014the trade-offs are absolutely worth it.\n<\/p>\n

      \n

      What It Means for Deuce Users<\/h2>\n

      \nA Deuce equipped with 0.9\u00b0 motors provides:\n<\/p>\n

        \n
      • Smoother motion with reduced micro-vibration<\/li>\n
      • Sharper corners and cleaner small features<\/li>\n
      • Better detailing on curved surfaces and organic shapes<\/li>\n
      • Cleaner dual-tool handoff in IDEX mode<\/li>\n
      • Higher repeatability in toolhead synchronization<\/li>\n<\/ul>\n
        \n \"Rear
        Rear view \u2013 LDO 0.9 Degree Motor<\/figcaption><\/figure>\n
        \n

        How We Implement 0.9\u00b0 Motors in the Deuce<\/h2>\n

        \nOur current configuration uses:\n<\/p>\n

          \n
        • LDO 42STH48-2004MAH 0.9\u00b0 motors<\/strong> on X and Y<\/li>\n
        • Custom-ordered 0.9\u00b0 Z motors paired with T8\u00d74 (2-start \u00d7 2) leadscrews<\/strong><\/li>\n
        • Tuned microstepping (1\/32 or 1\/64 depending on print mode)<\/li>\n
        • Optimized current and cooling profiles<\/li>\n<\/ul>\n

          \nThis setup allows us to leverage the improved resolution while keeping torque, acceleration, and print speed balanced.\n<\/p>\n

          \n

          Conclusion<\/h2>\n

          \nChoosing 0.9\u00b0 stepper motors is a key decision in achieving the high-precision performance we\u2019re targeting in the Deuce dual gantry printer.
          \nWith smoother motion, finer detail, and better dual-tool calibration, these motors play a major role in the print quality and reliability we expect from a premium North American-engineered 3D printer.\n<\/p>\n

          \nStay tuned\u2014soon we\u2019ll publish a follow-up comparing 1.8\u00b0 vs 0.9\u00b0 motors with real print samples directly from the Deuce.<\/p>\n","protected":false},"excerpt":{"rendered":"

          Because 0.9\u00b0 motors provide twice the steps per revolution, the controller can position the toolhead with finer mechanical precision. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-7","post","type-post","status-publish","format-standard","hentry","category-deuce-updates"],"_links":{"self":[{"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/posts\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":4,"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/posts\/7\/revisions"}],"predecessor-version":[{"id":15,"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/posts\/7\/revisions\/15"}],"wp:attachment":[{"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/media?parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/categories?post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/northforge3d.com\/forge-updates\/wp-json\/wp\/v2\/tags?post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}