Free hand drawings are the drawings that are made from the hand and these drawings are used to transfer the idea of an engineer’s abstract world to the real world in 2D and 3D.
As drawing is the international language of engineering and it is used for daily communication in the engineering world.
In a graphical form to non-technical peoples quickly present an idea, free hand drawings are also used and between all the members of a team and also between the customers, free hand drawings improve communication.
Without measuring instruments, free hand drawings are drawn and with the help of pencil and eraser, only these drawings are drawn.
Before every type of actual drawing, such drawing is drawn because it takes less time and necessary alterations are made in it if needed and the actual drawing is prepared then.
Importance of Free Hand Drawing:
In practical works, free hand drawing has much importance because the drawings of every object from the engineer have been checked by the draftsman.
Much time is wasted on the alterations if needed at the checking of complete drawing.
Instruments for Free Hand Drawing:
For free hand drawings, there are following instruments which are needed such as;
Soft lead pencil
Principals of Free Hand Drawings:
There are the following principals of the free hand drawings such as;
The object should be seen and pondered over its concepts and for selection of a view, a more detailed aspect is considered.
According to the sizes of views, space is specified on a drawing sheet.
The dim lines are drawn firstly and easily extra lines may be erased.
In these drawings, scale and ruler are not used although they consider the ratio and proportion of different parts of an object.
Horizontal lines are drawn firstly and then vertical lines are drawn and lastly, arcs and circles are drawn.
A clear scale is written in some suitable manner after completing the diagram.
Sketching of Lines in Free Hand Drawings:
Sketching of Straight Lines:
As sketching is done by different lines so the line is the most important part of free hand drawing and straight lines may be divided into various lines such as vertical, oblique, and horizontal lines.
Drawing straight lines is a difficult task for the first time and it mostly results in arcs and curves.
Moving your forearm is important when drawing the straight lines and between your hand and pencil tip, there should be a minimum distance of 40 mm. With the thumb and index fingers, straight lines are drawn and your movement should be in a controlled manner is the most important part of sketching straight lines.
Sketching of Vertical Lines:
From the top to the bottom of the drawing sheet a vertical line is drawn and to draw these lines it takes a lot of practice.
Using the edge of a paper as a guide and your hand as a scale you can draw vertical lines.
Sketching of Horizontal Lines:
Your hand and forearm should turn at the elbow when sketching horizontal lines and on the paper, the edge of your hand should slide horizontally.
You should first try drawing a line in the air to see how the line goes and then lightly apply a little pressure on the pencil tip and draw a horizontal line.
Sketching of Oblique Lines:
From the one corner of the page to the other diagonally the oblique lines are drawn and from the bottom left to the top right of the paper usually, the right-handed people draw sloping or oblique lines.
By just rotating the paper into a position where you are going to draw an oblique line the sketching can be made much easier.
Sketching of Rectangles:
In technical drawings, a rectangle is a common shape and different techniques are used to draw rectangles with freehand sketching.
By drawing vertical or horizontal lines and rotating the paper at 90 degrees angle is the easiest way to draw a rectangle and may be drawn in many other ways.
Sketching of Curved Lines:
In the drawing curved lines can be circles, arcs, etc and you should draw a center line and mark it with radii to draw a circle.
Sketch the top-left part of the circle by rotating the pencil in an anti-clockwise direction and by rotating the pencil in a clockwise direction draw the bottom-right part of the circle.
Advantages of FreeHand Drawings:
There are the following advantages of freehand drawings such as;
Original artwork and stress relief.
These drawings can be done at all places at any time.
Freehand drawings are the great practices for your all drawing building.
Overall the arts, these drawings help you.
These drawings allow you to express your ideas without being distracted by technical info and produce more sketches.