Beginning Assembly - Printing in Plastic: Build Your Own 3D Printer - page 158

■ Note When it comes to washers, you should learn to treat them as an “as needed” piece of hardware. Most of

the time you won't need them. But every now and then you may have a hole that is slightly larger (due to shaking
of the drill, for example) and thus requires a washer. We recommend purchasing a small number of #6, #8, and
1/4” washers for the various machine screws you'll use throughout this project.

Figure 10-3. Hardware to be used to attach Strong-Ties to Part K

■ Note The washers are optional; you may or may not find them necessary. If the #6 nuts are getting pulled down

into the holes you drilled, use the washers to prevent this.