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Prusa i3 Add-On X Tensioner

This is a simple, concise x-axis belt tensioner that fits most Prusa i3 printers. Parametric SCAD file included.

3D printer parts and enhancements

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Description

There are a lot of X idlers with a tensioner mod for the Prusa i3. But why print an entirely new idler when all you really need is a tensioner that fits your existing one? This simple, concise add-on x-axis belt tensioner can be used with most existing Prusa i3 x idlers and requires very little material. If you have an unusual x-idler or another printer with a similar design, you can modify the included SCAD file to fit.

Assembly

To build this part, slice and print one of the included STL files and add the vitamins listed in the BoM. (One of the STLs prints the tensioner part on its side with built-in supports. While it requires some extra cleanup it should make a stronger and neater looking part.) Then just stick the endcap part over the hole in the x-idler and screw it into the trapped nut in the tensioner. Couldn't be simpler!

(Note that the x-idler.stl file is only included for the "assembly" view in the SCAD file.)


Materials and methods

Print the parts and add these vitamins to assemble. Use the assembled image for reference.

- 1x M3x20 bolt
- 1x M3 nut
- 1x M3 lock-nut (optional)
- 1x M3 washer
- 1x M4x14 bolt
- 1x M4 nut
- 1x 624 ball bearing

Documents

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Comments

7eb09ef83e65758030525ddafc2d395e?default=blank&size=40SirMoo added this to the things to make collection ago
Mini grand conde coysevoxAlain Joly added this to the prusa collection ago
8f391d7db8e16fb7e99f5964b4a57563?default=blank&size=40Raymond added this to the 3d parts collection ago
Mini imageRflynn added this to the 3D printers collection ago
Mini imageRflynn added this to the Bobs collection collection ago
Mini 3davatarPaulo Rodrigues added this to the Hack my Prusa I3 :) collection ago
8f1692493952b438a3f3539bd7705646?default=blank&size=40BrunoNascimento added this to the Parts of Printer collection ago
Mini psiavatarScott Lahteine published this design ago