My boss gave me this anybody have any ideas?
Considering it is a quiz, I will not be helping at all on this one. My advice is to take the sheet to your boss, explain to him why you think things don't add up and have a discussion about the piece. He will appreciate your honesty more than you stealing an answer from the internet.
I already know the answer I wanted to see what I could get from u guys online
It can be done it just take some thinking through it.
The quiz part is a cylinder.
Ooops 3rd angle projection
Hey Mark, you beat me to it! lol...that's the "trick" I'm sure...It has to be 1st angle...
That's right it's a cylinder
Wow, I've been doing 3D work for so long, this 2D projection stuff seems so looong ago. Nice job, Mark--I was about to reply that the drawing must be incorrect, but if it's a cylinder that makes sense (like a key-way slot).
Whatever it's worth--in the odd times I actually need 2D detail drawings--I add center-lines to cylindrical things.
Oh so SNEAKY!
I'll admit, I was stuck "inside the box".
Filipe, your drawing that has been removed was wrong. Many of us have seen this quiz before and I'd be concerned that some have questioned projection angle because the pdf shows you "Front" and "Right" so there is no question that it was 3rd.
Hey Steve, I noticed that... That's why I deleted it...
I thought I had it...haha
Thanks for pointing it out though...
Alright, here are two interview questions that I've heard once:
What is the average diameter of a pubic hair?
What is the inside angle (smaller) between the clock hands when it is
Just skip the first question...
Just thought I would throw that quiz out there to hopefully get us 3d geeks to think outside the box and not forget the fundamentals
I had thought of John's solution too. I'm not seeing why that one is wrong (other than he left the hidden line out of his top view). A good opportunity to make me look like an idiot here, if it is obvious.
Edit: Hmmm....I don't think the proportions work out properly for a 1/2 cylinder vs. a cylinder. I knew I would notice something after I posted that!
As you will notice that on the drawing it says no hidden lines are missing it never said no centerlines were missing.
If it is a half-cylinder, the front view would be half the width of the right side view. At first I thought in generalities about how to make the views work, and didn't focus on the details of the relative dimensions.
OK, but why is the solution I've proposed wrong ?
Because you won't see the keyway in the front view.
Correct, 7.5 Degrees is right.
I understand daniels points about the half cylinder making the front and right views different sizes, but I'm not sure I get what you mean by I won't be able to see the keyway from the front view. As far as I can tell, the half cylinder version unfolds the same way as the full cylinder.
Maybe you could illustrate the difference?
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