V-Wheel Test Base

thingiverse

This is a handy little tool to check the precision of your 2020 V-wheels. Many modern three-dimensional printers rely on V-wheels attached to 2020 aluminum profiles for the hotend carriage or other movable parts. If the wheels are not perfectly circular or have flat spots (for example, due to heavy forces on the wheel over an extended period), it will lead to inconsistencies in your prints. In extreme cases, this can result in the first layer failing to stick to the print bed. Although this may be caused by other factors in most instances. With this test base, you are able to inspect your wheels and identify any damaged ones. I should note that most of my wheels (mainly from Chinese printers) were suitable for use in 3D printers: +/- 25µm. This design was inspired by Hermiedug's *V slot Wheel tester* on the Thingiverse platform: https://www.thingiverse.com/thing:3466589 I have created two base plates, one for a single dial gauge and another to accommodate two dial gauges in parallel. The dial gauges themselves are secured with a clamp, allowing you to arrange them as needed. The wheel is fixed in place using a hex screw and a hand nut. Avoid using washers together with V-wheels, as they will constrict the outer ring of the ball bearings inside the wheels. I have also included the Fusion 360 file to make it easy for you to design your own clamps. required parts: - M3x16 countersunk screw (2) - M3 nut (2) - M4x12 countersunk screw (4) - M4 nut (4) - M5x40 hex screw (1) - M5 nut (1) - dial gauge (1-2)