DO IT YOURSELF ENTRY --- PURPOSE: To enable individuals with arthritis or grasping disabilities to turn knobs. Included in a chapter entitled "Living Room & Leisure Activities," this article provides detailed instructions for building up a knob. Purchase epoxy putty at a hardware store and break off a small amount of each of the two colors. Knead the two colors together to a uniform color and mold it around the knob. Allow the putty to harden at room temperature. . MATERIALS: Epoxy putty.TITLE: Knobs, Dials, and Controls. BOOK: Easy Things to Make to Make Things Easy: Simple Do-It-Yourself Home Modifications for Older People & Others with Physical Limitations. REF: Cambridge, Massachusetts: Brookline Books: p. 62. PAGES (including cover) 2. 1997.