Page 10 - A Maker's Guide to Screws
P. 10
GLOSSARY
force a push or pull on an object
friction a force that slows things down and creates heat
when two things rub together
material something from which objects are made
motion movement
ridge a raised edge
secure safe and strong
INDEX
heads, 10–12 plastic, 8, 14
bolts, 13, 15 metal, 11, 13 screwdrivers, 7, 11–12
drills, 7, 11 nails, 6 threads, 10, 15–17
24 force, 14, 17 nuts, 13
