Minimal Metric Washers (for M3 and M4 hardware)

Here are a couple handy washers for M3 and M4 bolts/hardware.

These have a nice snug fit and are very narrow to work in small places where you just need a little shim to keep things from rubbing.

We recommend printing a couple to make sure your printer is dialed in, then printing 20+ at a time and stocking your hardware bins so they're around when you need them (for example, when building the TuneFast Harp).