Hand Drafting

Orthographic Projections

An orthographic projection is a 2D view of a 3D object. There are 6 different views possible, and these views are formulated by using something called the glass box method. This is a picture of a test I took on orthographic projections.

Lettering

Lettering is very important in hand drafting. This is so machinists can read and interpret the writing on designs. Therefore, all lettering has to be the same size, style, and neatness. Here is a worksheet I completed as lettering practice.

Isometric Views

Isometric views help see the whole part instead of just one side at a time. On the right is a practice sheet where I played with ideas and figured out how to do the assignment. Then, on the left is a final project that was made.

Compass Work

In this part of our unit, I learned how to use a compass and made a drawing using solely a compass to construct it.

Dimensioning

This is a picture of me working on a dimensioning assessment in class. Dimensioning is putting the measurements and angles on a mechanical drawing in order to help the machinist know how and where to make certain cuts. It is vitally important that not too few or too many dimensions are added, as that can make it very confusing.

Drafting Review

This is my final assessment for our drafting unit. This is an orthographic projection with an isometric view of an L-shaped 3D printed part.

This was a slightly more complicated drafting assignment that I did not get the time to fully finish, but this is what I completed.

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