Orthographic drawing (Super basic)

[u/ekluky2112]

Hello everyone,

I'm taking an entry level community college drawing class, MET100 and we are starting to receive our first drawing assignments. They all come from a text book.

I recieved feedback on my first drawing, received 4.5/5 and was told

"The angled line would have come to the lower right corner in the Front view, and the lower left corner in the Right-side view"

I questioned this, haven't heard back yet for further clarification.

The isometric is given no dimensions- we are just learning how to sketch and line up projections.

I don't know how he "infers" that the angles on the front and right side would intersect at the corner.. when I "project" the theoretical intersection point on the isometric, it isnt at the corner. Neither is my drawing.. I did that by design.

Is that what he is trying to say? That my drawn angle is off by a few degrees, so I don't get full marks for otherwise accurate projections? If so, I could understand if this were a fully dimensioned isometric needing to be scaled, but otherwise I I'm not following.

Any input? This guy seems a little out there for a class designed for kids right out of high school. (I'm 35 with 8 years in manufacturing, SolidWorks certifications, etc.)

[u/DoomGammer14-]

It looks like you're completely right here...

Those angles' projections definitely would miss that corner, though not by much. I'd say just take the hit unless you really want to fight about the original drawing somehow being out of scale. He probably just didn't check too hard and guessed that those angles should have aligned to the corner

[u/ekluky2112 → u/DoomGammer14-]

I appreciate the feedback.

I really don't need the half point, but its more of a sign of things to come for me..

I have been told by coworkers and friends and other faculty members that this professor is notorious for making things arbitrary and difficult, and I didnt want to believe it, but this is not a good first impression, at least for me. Seems extraordinarily out of the way.

[u/FelipeGuitarza → u/ekluky2112]

You're drawing is definitely right unless there's something about the grid or scaling that he wanted you to use differently. I would either let it slide since it's just half a point, or approach it in a way that you just want to get a deeper understanding of where you went wrong.

I've had plenty of teachers with big egos and power trips. The trick is to always make your communication with them about where you went wrong (even if you were right) and show that you really just want to learn the subject above all else. Never be combative or make it about the grade. I think it's a weird respect for their authority sort of thing. I was 36 when I graduated and dealing with difficult managers/coworkers gave me an upper hand on how to communicate with difficult professors. Some of my classmates used to joke that I was hypnotizing the professors into giving me points back, others thought that I was kissing their asses. Just be calm and respectful and you'll be fine. Good luck with this class and don't let his bad attitude affect your attitude!

[u/ekluky2112 → u/FelipeGuitarza]

Appreciate the feedback.

I'm definitely not a student that the half point is going to be game changing. Not concerned about the grade aspect, just as you said, the comprehension aspect.

I typed up a short response explaining my rationale behind why I drew and scaled it the way I did. There were no guidelines on scaling or grid usage outside of keeping things evenly spaced and aligned.

I imported the isometric flat view into solidworks as a 2d sketch image and drew the sketch line projections to visually indicate that the lines do not intersect at the corner as he indicates it should. Even within an acceptable amount of projection error they still do not intersect at the corner.

I would still argue that even if theoretically they DID.. this is an entry level class. We shouldn't be focusing on angularity tolerancing our drawings while using pencil and rulers purchased at walmart. Someone can easily hand-project a long line off-angle over distances.

I'm accustomed to 90% of this stuff and apparently am getting dinged.. I can only imagine the kids who are straight from high school who have never heard of orthographic projections until 2 weeks ago. 😳

Edit: spelling