This is my first time doing a proper orthographic projection because I hadn't take lukisan teknik in my high school. It's so fun doing it as I really like drawing formal thing than curvy shapes. I also like numberings such as measurements and calculations *maybe I have a strong mathematics gene from my dad's family xD*  

  Well, back to the topic, there's a lot to learn for me. First of all, the line weight. Thicker line weight indicate the object is in front. 2H line weight as construction and projection line. HB line weight for title block's borders. Second is the type of lines. Use dash line to show hidden objects. Central line have a cross and line must be extra than the circle. Lines for measurement needed to be connected until the last measurement. Then, the 45 degree line. This is my first time using T-square and set square in a professional way. I didn't know set square and t-square can be so useful and it save my time and energy a lot by just projecting 90 degree to the 45 degree line.

  Overall, it's a brand new lesson for me and I like it so much!