LAYOUT DRAFTING & PATTERN MAKING

← Back to document page

LAYOUT DRAFTING & PATTERN MAKING for Insulators Page 1 _________________________________ LAYOUT DRAFTING & PATTERN MAKING FOR HEAT & FROST INSULATORS Hans Siebert APPRENTICE WORK BOOK & JOURNEYMAN REVIEW MANUAL Hans Siebert-2000 _________________________________ LAYOUT DRAFTING & PATTERN MAKING for Insulators Page 2 Preface This book has been prepared as a text for use in Heat and Frost Insulator apprenticeship classes. It explains basic methods of drawing patterns for developing sheet metal and other types of protective covers commonly produced for wrap over insulation.

pencil sharpener. For example, a strip of No. 0 sandpaper, 4" long and 3/4" wide, glued to a thin strip of wood, is quite serviceable. The chisel end of the pencil is used for drawing straight lines, and the conical point for free-hand sketching and marking dimensions. A soft pencil should never be used for drawing, because

  Making, Line, Drafting, Layout, Patterns, Layout drafting amp pattern making