An isometric is more specific
an isometric sketch is a 3D drawing of different regular prisms that are often drawn on isometric dot paper isometric sketches are useful for planing enginering basic items.
Isometric drawings and shapes are angled to 30 degrees.
These principles are usually taught in a drafting class, but may be taught in advanced art as well. Orthographic views may be drawn out on a page to show top, front and side views of an isometric drawing that is also drawn on the page as well. This is a basic drafting design setup.
because in 2nd and 4th angle,both the view is going to overlap with each other,so we cant able to visualise the drawing properly,so we are not drawing in 2nd and 4th angle. kash answer kash_115@yahoo.com
An isometric view necessarily should have two side views and either top or bottom view incorporated to be drawn in a single drawing. In order to represent top 0r bottom view a 30 degree angle from horizontal will be established as an inclined plane. Hence where the circle has to appear is important. Any how in order to get a circle in an isometric view an oval or elliptical form should be present in any one of the first angle or third angle views.
Isometric drawings, 3-D representations, are drawn on an angle to the parallel to show how the finished product should look. All dimensions should be the same as if drawn flat (2 dimensional).
An isometric is more specific
an isometric sketch is a 3D drawing of different regular prisms that are often drawn on isometric dot paper isometric sketches are useful for planing enginering basic items.
It is when some teachers do not have note that they will give a stupid assignment to do
Isometric drawings are drawn to the same scale along all three axes (x,y,z) so are useful for giving a sense of relative dimensions, and three dimensional scale. Measurements can also be taken from the drawings for items that lie along or parallel to an axis.
1.)Oblique sketch has a more focus on the front side of an object or the face while isometric sketch focuses on the edge of an object. 2.)Oblique sketch drawn usually using the 45-degrees angle to render the third dimensions while isometric sketch drawn using 30 degrees angles.
v Orthographic drawingØOrthographic drawings are orthographic projection drawings. These can be drawn at first angle projection and third angle projections.ØI am going to explain orthographic third angle projection drawing because I use them.ØIf I want to draw orthographic third angles projection drawing I have to follow some rules.ØThese rules are:ØThe view from the front is in the middle.ØThe view from the left is on the left.ØThe view from the right is on the right.ØThe view from the top is on the top.ØThe view from the bottom is on the bottom.ØThe view from the rear/back is on the far right.Example of orthographic third angle projection.Orthographic drawing advantageOrthographic drawing disadvantageEasy to recognized /read and understand by engineers.Hard to recognized by other people then engineers.Doesn't looks like at all to real design/picture.
Isometric drawings and shapes are angled to 30 degrees.
Two popular methods for drawing 3d objects on paper are Oblique and Isometric projections. In Oblique, the front of the object is drawn like you are looking straight at it. The top and bottom recede away at an angle (usually 45° from horizontal). In Isometric, there are vertical lines, and lines at 30° from horizontal in either direction. Both of these methods can be drawn by hand or with the aid of T-square and triangle, or special gridded paper. See related links for more information.
A form of three-dimensional projection in which all of the principal planes are drawn parallel to corresponding established axes and at true dimensions; horizontals usually are drawn at 30° from the normal horizontal axes; verticals remain parallel to the normal vertical axis.
In first angle auto graphic projection the planed, view is drawn exactly below the front elevation. What is viewed from the left is drawn from the right side of the front, it is drawn in the 1st angle and 3rd angle.