This precision shim is included with every full size OpenBuilds Wheel Kit.  You place it between the two bearings to avoid binding.  They are inexpensive enough to use as a washer on any of your projects.  10mm OD * 5mm Bore * 1mm thickness  Download the model file below to use in your project!

These are awesome, high quality, custom made aluminum spacers.  They are great at making sturdy standoffs/spacings for your projects. Metric version of the spacer is 10mm OD which makes a very stable platform. The spacer has M5 ID to give a thicker wall to keep the screw snug and centered. These spacers can be used in all sorts of builds.  For example, We use the spacers to create a space between the stepper motor and motor mounting plate. This allows for room to mount hardware such as couplers and belt pulleys to the motor shaft. An assortment of the most popular sizes are available. CAD file formats can be found here

These are the precision shims used in the Mini V Wheel Kits. These shims can be used for spacing on many applications. Part Details Stainless Steel Dimensions 8 OD x 5 ID (M5 Screw Size)  x 1mm 'thick' +0.076 / -0  

As shown in the pictures, this washer can be used to bridge the slot on V-Slot or compatible extrusion to allow for the mounting of various components.   You can also be use it as a standard washer or spacer shim and incorporate it into all of your projects. 15mm OD * M5mm Bore * ~2mm thickness Zinc Plated Steel

  1/4" x 47/64" OD x .05" - .08" thick Carbon Steel

These are awesome, high quality, custom made aluminum spacers.  They are great at making sturdy standoffs/spacings for your projects. Metric version of the spacer is 10mm OD which makes a very stable platform. The spacer has M5 ID to give a thicker wall to keep the screw snug and centered. These spacers can be used in all sorts of builds.  For example, We use the spacers to create a space between the stepper motor and motor mounting plate. This allows for room to mount hardware such as couplers and belt pulleys to the motor shaft. An assortment of the most popular sizes are available. CAD file formats can be found here

 Slide on to 8mm ACME thread for a spacer. ID 8mmOD 12.73mm.062" Thick Stainless Steel