#engineering drawings

I found this lesson was definitely a step-up in terms of difficulty and challenging the way I envisioned the forms and dimensions of an object. It tied together everything we had been learning for the past 3 weeks quite well, including section and auxiliary views, orthographic projection, and continuing to apply AS1100 drawing standards.

Again, I found the initial rough sketch to be very useful. Especially in this week's exercise, where the front, section and top views weren't all apparent from first glance, the draft was very effective in helping me to grasp how the form would look from each angle.

Next time, I definitely need to also take into account the layout of the page in my rough sketch, or even do multiple rough sketches to really plan out my page before starting my final drawing.

Projecting a partial auxiliary view of the tapered surface was difficult for me to wrap my head around at first, however, with help from tutors and peers, I understood what was to be represented on the page. I hope that these unfamiliar skills become somewhat second-nature to me by the end of the term.

My final drawing definitely didn't turn out as well as it could've. Using 1:1 scale automatically is definitely something I need to reconsider next time (I would use 1:2 if I were to redo the exercise). There was not enough space on the page for me to create a neat and pleasing layout using this scale. Further, the lack of space and planning resulted in me diverging from drawing standards and putting my title block in the top left corner instead of the bottom. I think I can also improve on the neatness of my handwriting, and again, the line weights aren't as dramatically different and effective in emphasising the views themselves as I would like.

R.M. Moyle M.d. Liquid Inhaler, 3/28/1871 

This tutorial exercise was definitely the most challenging and time-consuming of all the exercises thus far, however, because of this, it was also a great learning experience.

Part 1

For the first activity, we had to construct a 2-point perspective view of the chamfered box we had constructed and brought to class.

My first attempt failed as I hadn't taken into account the need for the Station Point (SP) and Picture Plane (PP) to be close enough to each other so that the left and right vanishing points could be established on the page I had. I had set my centre of vision (CV) too close to the centre and my horizon line (HL) and PP too far from one another.

In my next attempt, I moved the CV more toward the right and moved the HL and PP closer together, which worked out.

Projecting the lines from the left and right vanishing points to construct the box was quite confusing and overwhelming when attempting it for the first time, however, this became less of a struggle by the time I had done it a couple more times in the following exercises.

The final product definitely could've utilised better spacial organisation. The construction lines don't come through on the scan, making it look even more bare and poorly spaced. However, I was happy with the outcome of the chamfered box itself, which resulted in a similar perspective to the image in the tutorial task.

Part 2

I definitely felt more comfortable completing the first step, and revising constructing a box in 2 point perspective. However, the rest of the exercise took quite a bit of energy to figure out.

I found that the sheer number of projection lines made it confusing to decipher which lines were integral to actually constructing the extended sides and faces. It was quite time-consuming and at times confusing, however, I'm pretty happy with the final outcome.



Part 3

Constructing the cube felt pretty comfortable for me at this point which I was happy about seeing as how foreign it felt doing it for the first time in class. I found that this task was generally pretty straightforward by following the tutorial in the reading. However, I didn't quite understand how to identify the major and minor arcs on the top face, as there were no opposite vanishing points from the top face.

This week's exercise introduced us to AS1100 drafting standards and methods of orthogonal projection. This was done by bringing in an object to create a third-angle orthogonal drawing. I chose a hand cream which proved to be quite a simple object with minimal details to draw and project. However, the curved nature of the shape made it difficult to create a very accurate representation, as that would require measuring the width at multiple intervals.

Constructing the 5-sided box was an interesting and helpful exercise. It allowed me to continue practicing hand-drafting skills using a T-square and ensuring measurements were accurate. The end-product also allowed me to understand third-angle projection better via a more tangible learning style rather than trying to visualise it in my head. However, I think it may have been more effective if I had a more complex or confusing form to draw.

I found that generating a rough sketch of my orthographic views was very helpful in giving me a starting point and providing a reference, which I continually looked to when I was drawing up my accurate orthogonal drawing. This is something I think I will make a habit of starting with for every exercise in the next few weeks, as it helps to double-check measurements, positioning, labelling etc.

The lesson was definitely effective in introducing me to the applications of the theory we went through in the lecture. It was good to be able to apply dimensioning, line weight, border and title block standards, however, I still found myself unsure if what I was doing was correct.

Plans for battleships USS Kearsarge (BB-5) and USS Kentucky (BB-6): Arrangement and Details of Anchor Cranes, 5/4/1900.

File Unit: Plans for the Battleships USS Kearsarge (BB-5) and USS Kentucky (BB-6)

Series: Alphabetical Series of Ship Engineering Drawings, 1919 - 1940

Record Group 19: Records of the Bureau of Ships, 1940 - 1966

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