When I went to high school, it was a time when shop classes still existed and you could learn some drawing by squares for kids 7 8 essential for your future maker self. It was the worst of times.
It was the best of timesI think one of the most important skills to be gotten out of that was learning how to draw and read technical drawings, things like architect plans, blueprints, parts specifications. Most of our shop teachers were veterans, you know, the curmudgeony type where something was not quite right. I think that it was the missing cigar stogie to chomp on because they wouldn’t allow it in school. Anyway, we had one that told of his story of landing a machinist’s job because during one job interview he was able to sketch out a dimensioned drawing of a part that was needed to fix a machine that he saw during the tour of the shop.
There is a lot more detail to what I am going to show but this ible should be enough to get you started. So whether you are a budding artist just starting to draw cars, treehouses, redecorating your room, or thinking about drawing up plans for the next generation starship, this is for you. Note: The drawings I will use to illustrate the techniques might take on the form of sketching and not as formalized as using with instruments. There are tons of references and standards which you can look up to see what professionals do. I hope you get the idea and just try. The rest is really to make things neat and exact.
There is a whole range of hardnesses of the pencil lead. HB or harder is good for technical drawing since it produces a crisper line and doesn’t smudge as much. Now there are mechanical pencils that you can get in various thicknesses and lead hardness. If, if you make a mistake, there are gum erasers, real rubber erasers, composite erasers and cheap erasers.