Round 1, Fight!
What difference does it make? They’re the same thing. The only time it is a problem is when you are working with both regularly and someone forgets to look at the title block and or someone doesn’t indicate which projection it is on the title block.
I really don’t care which one, I only wish we would decide to use one or the other rather than both.
Our global parent is trying to get us to switch to 1st. Very difficult as we make mechanical products in an architectural world. A lot of retraining to come and many of our US based vendors and customers present a further challenge.
I don’t mind changing how we do something but 1st angle makes no logical sense. I see how and why it was developed but it appears to be more of a philosophical decision made by Europe rather than a practical decision.
I really don’t see any difference logically. it’s just a choice of which way you flip the part. Flip the part up or roll the part over.
In the real world 1st angle is actually easier. If you have a 100lb block and flip it, you are doing first angle
It’s just like the age-old imperial/metric argument. It gets no one anywhere and just ruffles feathers.
“There are only two kinds of countries; those that use metric and those that put a man on the moon.”
“Metric is so much easier to use.”
“Thousandths are smaller than millimeters so imperial is more accurate.”
“Metric is better because the best countries use it.”
And it ultimately ends in: “Metric leads to socialism. Just look at the socialist countries using it.”
And the comeback: “Imperial is a vestige of colonialism.”
Unlike 1st vs 3rd I think there are significant differences between Metric and Imperial/Standard etc. I mean really, how many meters in a kilometer? How many yards in a mile? How many cm in a meter? How many inches in a yard?..what WTF!?
It gets even worse when you start looking at things like, how many grams does a cubic centimeter of water weigh? How many ounces does a cubic inch of water weigh?
I learned by fractions down to 1/64ths because I used them for years in the shop. I learned my “Fractions” in the metric system in less than a second because I could divide by 10 .
I’ll be super pleased the day that metric material is readily available in the US. That is the last vestige of the metric system in the US. Even the old time shop guys lost there excuses because now most of their tools are digital.
One of the bass-ackward things about 1st-angle is that they do sections in 3rd-angle.
Metric is another thing we would be converting to and I have less issues with it. Personally I can’t see that metric or imperial has that much of an advantage over the other. For the US, its just the expense of converting, retraining, new equipment purchases to support it, etc. (Big expense and deal but I get the need to standardize on something).
But 1st angle makes no logical sense to me except that Europe went with it because its was developed from the first quadrant of coordinate systems, and 1 comes before 3 so it must be right. 3rd angle makes more logical sense, the right view of the part to the right of the front and the top is above the front view.
I know the argument is rather pointless, just needed something other than SWYMp discussions to drag us all down.
Wasn’t aware of that, should be fun.
I think metric makes tons more sense than imperial on pretty much every level. the only thing that screws it up in the US is material thicknesses. 10mm is…1mm. .1mm is .1mm. .1 mm is .1mm. In Imperial that is ~25/64,~5/128 and ~ 1/256
In reality if you use decimal all the time not nearly as big of an issue but anyone using imperial also tends to use fractions on simple stuff as do a number of other things like drills etc.
First vs third is little more than, Flip a block over and where it lands is first angle. Flip a block over and drag it to the opposite from where you started is third angle.
Sections are based the direction the section is looking at, which way the arrows are pointing. They really don’t have an angle of projection. Although confusing you could do a section view in third angle and drag it to the other side of the part and technically, as long as the directions of the arrow didn’t change it would still be a good section view in third angle…but it would look the same as if you rolled it over as you would in first angle.
3>1
Prove me wrong…
3rd will always win,.. our direct line of sight to any object is the projection we observe naturally.
Personally, I think the wording, 1st and 3rd is backwards.
1st (person, looking directly at object) and 3rd (party looking from the other side),… imho.
Both are equally confusing if one cannot ‘see’ in 3D to begin with.
3rd angle is equal to someone walking around a part and observing an object from each side.
1st angle is equal to someone remaining fixed and flipping the part to see the other sides. (Why is the bottom side shown at the top of the drawing?)
Using the above logic - anything you can’t pick up should be done in 3rd angle and anything you can lift should be done in 1st angle. Case closed.
Let’s meet in the middle.
Impetric or Metrial..
That doesn’t solve anything. How dare you judge my weight lifting capacity??? I have non-binary strength; if I just decide I can lift it…I can.
Does that mean I have to draw an X wing in 3rd angle, but Yoda can draw it in 1st angle?
image.png
^^^^^^This. The argument that one is better than the other is typically by people that have trained themselves to do one and can’t do the other. Both are equally as easy if one simply visualizes the part in 3D to begin with.
The above is not true for Metric vs Standard. Dividing by 10 will always be easier than dividing by 12, 3, 36 or so on.
Yoda all angles will be.
These folks would like to have a word with you.