Computer-Aided Design

Topics




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


Vector


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 .

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gitlab


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




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





You can use this tool to cut and modify the object as well



Fillet

Fillet tool is to change the edges to be rounded





Combine

Combine tool is to combine multiple objects to be a one shape






Front View




Top View




Back View




Bottom View



Download

Second Stage Regulator

Inflator

Reference


2D Drawings tutorial