qmstech - Tool Crib (Layout)

LFS Lesson Plan

Unit EQ: What are the basic tools and necessities used for understanding technology?

LEQ:What are the basic layout tools and how are they used.

**Activating Strategies:

Handout layout tool crib sheet.
Why do we need layout tools?
- To draw straight lines
- Transfer complex designs to the material we are working on.

Acceleration/Previewing/Vocabulary:
Scratch awl, Try-square, Combination Square, Marking gauge, Pilot hole, Square

Teaching Strategies and Distributed Guided Practice/Summarizing Prompts:

Scratch Awl
- Used when layouts go with the grain of the wood.
- A steel spike that is sharpened to a point at one end.
- Used by pressing it into the stock to make a small hole.
- Can be used to make a pilot hole. This keeps the drill bit from moving when you try to drill.
- Can also be used to mark lines on metal, pens and pencils do not mark well on metal, they tend to ware off.
Try-Square
- Used primarily to make lines that are square. Which means perpendicular from one edge.
- Why is it important to make a square edge?
- It can also be used to see if a piece of stock is flat.
- Set it on a edge that is 90 degrees
- Then hold the stock up to the light
- Look for light that can be seen under the metal part of the try-square
- Can make measurements
Combination Square
- Can be used to make 90 degree angles and 45 degree angles
- It also has a small level
- Less accurate then the try-square because they can get beat up or move with heavy use.
Marking Gauge
- Scribes a line parallel to the reference edge or surface.
- Parts of the marking gauge
- Beam
- Headstock
- Scribing implement
- The headstock slides along the reference edge.
- How to use the marking gauge
  - First measure on the stock to the desired length
  - Then adjust the headstock until the marking pin is on the line.
  - Tighten the headstock.
  - Press the pin in lightly and pull the marking gauge towards you.
  - Best used when going with the grain.

Summarizing Strategies:

Homework:**