Correlated courses in woodwork and mechanical drawing

by Ira Samuel Griffith

Recitation—

Dado? What is this joint used for? Grooves?

Develop fully the steps taken in making the dado.

Develop fully the steps taken in making the stub tenon and mortise.

Assignment for Lesson 15—

Essentials, Sections 73, 74, 75.

Demonstration—

Talk on getting out stock. Look over small pieces first.

Use narrowest boards that will do; 12″ boards are scarce; keep them for taboret tops, never use them for legs.

Use try-square and straight-edge and saw to the lines carefully ripping first then crosscutting to the ripped part only. Leave on the board all but just what you need. Use your stock bill. If others are waiting for stock, saw only one piece and work on that while they are getting a piece. Watch your thicknesses. Never discard a piece that has been partly worked, without permission. Bevels or chamfers are made after joints. Mill-marks must come off before parts to joints are fitted; why?