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Comments (18)

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  Perz1val
  That center pin looks fragile, especially if it's printed along Z axis. How about printing teeth that'd mesh with the belt?
• hettygreen
  This is why I thoroughly enjoyed building my Prusa as a kit. You see little tricks like this, including this exact one. Or how they embed threaded nuts, or how the print is shaped and oriented to be made without supports, etc. Building the prusa saved a bit of money, but was also a crash course in how to design.
• teraflop
  This is indeed a very elegant fastening method.I wouldn't be surprised if the designer of that CNC machine borrowed it from the popular Prusa MK2 3D printer, which uses a very similar design for its Y-axis belt: https://help.prusa3d.com/guide/2-y-axis-assembly_79992#81120
• Ccecil
  Also works well with a zip tie or 2. The belt holds itself in place as long as the tension is there.Most of my old printers still use this method on them. [1] You can also use another ziptie as a tensioner.[1] Very old example. https://flic.kr/p/db51Ue
• deepsun
  Prusa Core One uses that technique, or I miss something.https://help.prusa3d.com/guide/5-corexy-assembly_835522#8648...
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  forgetfreeman
  Author appears to have concerns about the belts working out of the top of the housing, but is seemingly ignoring the four existing screws that could be used to fasten a top plate to prevent this?