Questions tagged [drafting]

Questions about tools and techniques for technical drawing. If your problem is mainly with a particular software package, consider using a tag for that software package instead.

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I-beam annotation for tube on drawing

I have been sent a clip of a drawing with the following annotations on it, but I've never seen them before and can't figure out what they mean. Is there a standard interpretation of these callouts? ...
3
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0answers
42 views

GD&T Is this a regular feature of size?

From ASME-Y14.5, a regular feature of size is defined as "one cylindrical surface, a spherical surface, a circular element, or a set of two opposed parallel line elements or opposed parallel ...
2
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0answers
534 views

GD&T for Multiple Surfaces as Single Feature

I'm looking to get some collective agreement on a question that I have come across a few times now. When referring to features that are technically independent, what is the general consensus on ...
1
vote
1answer
35 views

Applying ISO fits to radial bearings

Do you need to take the bearing size tolerance into account when creating the tolerances for the mating hole/shaft when using ISO 286 tolerances? For example, a 125 mm OD bearing with a desired H7 ...
1
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0answers
34 views

Dimensioning holes through a hollow shaft

I have three types of holes in a hollow shaft that are perpendicular to the shaft. The first type of hole go only through to the centerline. The second type go all the way through (i.e. out the other ...
0
votes
1answer
40 views

Is there anything in BS 8888 regarding the scale of a section view?

If a section view isn't sufficient enough to show all details required, can it be at a larger scale than its parent view? Is there anything in BS 8888 regarding recommended scales in section views? ...
0
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0answers
376 views

What standards apply when specifying coating/painting in a mechanical part drawing?

I have produced a part drawing which calls up a machined mark on a flat surface, and the supplier has manufactured the part with this surface painted. I haven't added a note to the drawing that says ...
0
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0answers
183 views

Two intersecting prisms (typed and with diagrams)

Case 1 The development of Case 1 of this problem in which the axes of the prisms intersect at right angles, is shown in Diagram 1. Note that interedge lines are required for the development of both ...