Just four 12 x 24 polycarbonate sheets will be enough to create 6 sets of PPE. Our recommended source for polycarbonate is here.
Each face-shield only requires six zip-ties, so one pack will be more than enough.
Using non-latex bands is important when making face-shields. We recommend this source.
Here you can find printable patterns to use for constructing the shields. Thanks to Innovation FIRST International for the designs!
Here's our instructional video for assembling a face-shield.
Here are some written instructions for constructing the face-shields to use instead of the video above.