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the art of technical drawing

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Drafting Standards

Axonometric: Drawing in 3D!

October 2, 2025

Imagine you're trying to draw a cool, blocky robot. How do you make it look like it's really popping out of the page instead of being flat? That's where axonometric drawings come in! Axonometric is a fancy word for a type of drawing that makes 3D objects look 3D on a 2D piece of paper (or screen!). Think of it like a special superpower for artists and designers. Here's … [Read more...] about Axonometric: Drawing in 3D!

Decoding Metric: Choosing the Right Units for Your CAD Drawings

May 11, 2025

In the world of Computer-Aided Design (CAD), precision and clarity are paramount. A crucial element in achieving this is the consistent and correct use of units. For those working within the metric system (SI units), understanding which unit to employ for different types of drawings can streamline workflows, prevent errors, and ensure universal comprehension. This post will … [Read more...] about Decoding Metric: Choosing the Right Units for Your CAD Drawings

Top 5 Free DWG File Download Websites for CAD Drafting

December 4, 2023

Here are some of the best websites for free DWG file downloads for CAD drafting: blocks.draftsperson.net: This is one of the oldest and most comprehensive free CAD block websites around. It has a history dating back to 2002 and offers a wide range of categories, such as architecture, civil, equipment, furniture, people, vehicles, and more. You can download the DWG files … [Read more...] about Top 5 Free DWG File Download Websites for CAD Drafting

Drafting Standards – What metric units do I draw with?

September 7, 2022

What metric units do I use in my architectural, structural, building services or civil disciple drafting projects? Is it millimetres (mm), centimetres (cm), metres (m) or kilometres (km). In AutoCAD do I draw my architectural plan in mm or cm? How about Civil plans is it m or km? What is the industry drafting standard? In this video tutorial I will show you what is used on a … [Read more...] about Drafting Standards – What metric units do I draw with?

What symbols to use for valves

March 31, 2021

For my P&ID drafting of valves, what industry standard symbols should I use? A handy chart for P&ID Drafting DWG and PDF file formats of these symbols can be downloaded at: https://blocks.draftsperson.net/download/pid-valve-symbols/ … [Read more...] about What symbols to use for valves

Holes and Slots, Standard Sizes

March 10, 2021

This information applies to the American Steel Industry. Holes and Slots Standard Holes Standard hole sizes for bolts are made 1/16-in. larger in diameter than the nominal size of the fastener body. This provides a certain amount of play in the holes, which compensates for small misalignment's in hole location or assembly, and aids in the shop and field entry of … [Read more...] about Holes and Slots, Standard Sizes

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