Understanding First Angle & Third Angle Projection – The Easy Way!
Hey there, future engineers! 🚀 Today, we are going to learn about First Angle Projection and Third Angle Projection in engineering drawings. Sounds complicated? Don’t worry! I’ll make it as simple as your favorite video game! 🎮
📌 What is Projection?
Imagine you found a cool toy—a car, a robot, or even a spaceship! You want to draw it from different sides:
- Front View (what you see from the front)
- Top View (what you see from above)
- Side View (what you see from the side)
To do this properly, engineers use a projection method to place these views on paper. There are two main ways to do this: First Angle Projection and Third Angle Projection.
1️⃣ First Angle Projection – “The Sneaky One” 🕵️♂️
This method is like a sneaky spy! Imagine putting your toy inside a glass box. Now, instead of placing the views where you see them, you flip them to the opposite side! 🤯
Example:
- If you look at the toy from the front, its front view goes behind the toy on paper.
- If you look at the toy from the top, its top view moves below the toy on paper.
It’s like your toy is playing hide-and-seek with you!
Easy Way to Remember:
- First Angle = Flipped Views
- Symbol: ⭳ (Imagine a cone pointing downward)
3️⃣ Third Angle Projection – “What You See is What You Get” 👀
This one is more straightforward—like your best friend who never tricks you! 😆 In Third Angle Projection, we place the views exactly where they belong.
Example:
- If you look at the toy from the front, the front view stays in front on paper.
- If you look at it from the top, the top view stays on top on paper.
Easy Way to Remember:
- Third Angle = Views Stay in Place
- Symbol: ⭱ (Imagine a cone pointing upward)
🎠First Angle vs. Third Angle – A Funny Comparison!
| Feature | First Angle Projection 🕵️♂️ | Third Angle Projection 👀 |
|---|---|---|
| View Placement | Flipped to the opposite side | Stays where you see it |
| Common in | Europe, Asia | USA, Canada |
| Confusing? | A little tricky! 🤔 | Easy to understand! 😎 |
| Example | Your friend sitting behind you but waving from the front | Your friend sitting in front of you and waving normally |
📷 Drawing Reference
Here’s the drawing reference which needs to be mentioned in drawing sheet for First Angle Projection and Third Angle Projection:
