Computer-Aided Design

Topics

2D Drawings
3D Drawings

2D Drawings

2D drawingis a drawing that consists of only X and Y axis. There are 2 types of the 2D drawings, Raster and vector. the raster graphics are composed of pixels while the vector composed of paths The raster images agroup of multiple dots (DPI) dots per inch or (PPI) pixels per inch which make an image but you can not see it unless you zoom in the image. The Raster image types are PNG JPG and GIF. the vector images is a path or line and used to make cartoon movies or signs. the types of the vector images are SVG, EPS and PDF.

Software

Raster

GIMP
Photoshop
MyPaint

Vector

CorlDraw
Inkscape
FreeCad

How to Draw

in Corel Draw software, there are tools and each tool do something, I use to draw an inflator using Draw line tool, draw box tool, and text box tool. you can manage infill and outline colors as well. In addition you can manage line thickness. for my sketch I use to draw rectangles, lines to make a spring shape and use the move tool to put each part in the it's place .

Inflator Sketch

The inflator used to inflate and deinflate the BCD. it has two buttons, inlet for Air Supply, outlet for air to the BCD and vent point to relaes the air.

3D Drawings

3D drawing is a drawing that consists of 3 diamensions X,Y & Z seems like a a real thing or object. the 3 D drawing has a volume. to calculate the volume you need 3 axis value multiplcation , x*y*z and the volume has units such as cubic cm and cubic mm.

Software

Autodesk 360 fusion
Blender
Rhino

Solenoid

Second Stage Regulator Modification

Here some steps of 3D Drawing

Extrude

after drawing a 2D sketch o what ever you like of the objects you can use extrude tool to make it a 3D object like the following. You can use this tool to cut and modify the object as well