Questions tagged [drawings]

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What is causing the elliptical shape around the marked hole?

Background So I am looking at this piece titled "Ring" and I cant figure out what I am missing in the drawing that cause the elliptical shape at the two hole entrances on the right side of ...
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In my on going series of teaching myself to model machine parts in Inventor, I keep stumbling across the following scenario for both external and internal threads. My reference drawing are from the ...
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1 vote
57 views

What is the unidentified shape in the drawing

Woot! HTTP://www.DigiPeer.de is back up and running so I am back to practicing part drawing in Inventor LT 2021. I am looking at the following drawing titled "Pin" (according to some ...
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Isometric view of the given figure

Draw the isometric view of the given diagram. I have added my trial and I am unable to think how exactly the final diagram will look like. Please help me. [
1 vote
52 views

What software is used to create the graphics for stuctural analysis textbooks?

I want to create some 2D and 3D drawings of simple trusses and frames. and I was wondering, what is the software used to create the graphics seen in structural analysis textbooks (example: R.C ...
1 vote
436 views

Are un-dimensioned orthographic views permitted on a standard drawing?

If I remember correctly, best practice on a drawing is if you fully dimension a part in two out of three orthographic views you don’t include a third view with no dimensions. Is this a documented ...
1 vote
37 views

Is there sufficient information to complete the bottom end?

BACKGROUND Fresh of the heels of figuring out my "kinky" issues in this question I thought I was fully prepared to deal with the following drawing titled COILED PIPE 2. The drawing seemed ...
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47 views

Part drawing information vs Assembly drawing

With my progress through various drawings, I finally came across an assembly drawing with parts I have actually drawn up that caught my eye. The first part drawing as shown below is a simple sheet ...
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44 views

What is the best way to handle the hole pattern in this drawing

Apparently I am on a roll of more questions than not today. In the following drawing, there is a pattern (partial?) of 2.7 mm holes. The word in German pointed at them according to google translates ...
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109 views

Are these cut lines?

In the following drawing I am looking at the lined that come in on either side of the teeth/tabs that are spaced 9 mm apart and extend 6 mm into the material. In my head these are cut or shear lines ...
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Proper way to model same diameter hole with different tolerances?

This drawing indicate 3 concentric holes. What I did was: Sketch the circle for the outside of the cylinder - 38.5 dia. Extrude the circle for the overall length of the cylinder - 37 mm Use the hole ...
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1 vote
41 views

Loft not quite making the cut

I am working in Inventor LT 2021 which means I do not have access to the sheet metal tool. Which would have been great as the example I am working on is sheet metal. The example drawing I am working ...
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1 vote
53 views

What does the Pg annotation mean

While I am continuing my practice with the German drawings of the V2 rocket, I have come across the PG designation a couple of times on different drawings. I originally thought it was for diameter, ...
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Concentric Circles & Section/Breakout Confusion

This is part of my on going saga of drafting question with respect to the V2 drawings I am using for practice while learning inventor. The following drawing is titled "Partition" (...
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1 vote
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V2 drawing interpretation

This is part of my on going saga of drafting question with respect to the V2 drawings I am using for practice. The following drawing is titled "Container Overview". It has left me with 3 ...
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1 vote
53 views

Interpreting drawing annotations

The other day I was looking for example drawings to follow that would be used in a real world context as opposed to basic exercise books and I stumbled across a museum archive of the V2 rocket design. ...
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35 views

Inventor Filleting Issue

I am a beginner practicing with Inventor 2021 LT and I was working on the following sample drawing when I ran into an issue with fillets: At the top edge of the U-shape slot, a rounded corner can be ...
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1 vote
42 views

Interpretation of dimensions

Continuing through my practice examples I came across the following diagram and I have a question on how to interpret the depth of the part. I have the part drawn up in inventor, but when I went to ...
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1 vote
163 views

Symbol and dimension question for practice sketch [closed]

I am practicing with Inventor LT 2021 to get used to it, and learn more about how to manipulate things in it. I was practicing with the following sketch and I developed a bunch of questions about the ...
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1 vote
256 views

Why are there sometimes slash marks and sometimes arrows in dimension lines?

Sometimes, I see dimension lines drawn like this: Where there are extension lines and double-headed arrows between them. This is also how my textbook, Technical Drawing with Engineering Graphics, ...
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1 vote
106 views

How to place a sketch plane at a specific geometric location

My background drafting is structural bridge drawings. I had Inventor LT installed the other day and I have been playing with it to refamiliarize myself with it and get used to the differences between ...
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1 vote
130 views

How to Construct a Primary Auxiliary View given that an oblique surface with 6 sides

I need to construct the auxiliary views with the given front and right side orthographic views. The view is in third angle projection. I observed that there is an oblique surface so that perhaps I ...
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1 vote
251 views

Finding the isometric view of an object from the front and right side view

I need to draw the isometric view and top section view of the object given only the front and right side view. I understand on how other edges of these views correlate with each other. I just do not ...
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1 vote
48 views

Is sphericity the same as profile?

I have to inspect a sphere on a CMM, and the standard states that the "Sphericity must be within 0.02mm". I am using a Zeiss CMM, and it does not have a 'sphericity' inspection method, but ...
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153 views

Conversion of orthographic projection to isometric projection [duplicate]

I'm new to engineering drawing, and I am having trouble drawing isometric projection from orthographic projections. Can someone give the steps/thought process behind this conversion? I can upload the ...
1 vote
293 views

How to choose tolerance size?

I can not really understand how people decide what tolerances to set for a part or assembly. For example: When can I choose 0.2 mm and when 0.002 mm; and if I choose 0.002, why didn't I choose 0.001 ...
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29 views

What does the lower dimension mean?

4.3 is the diameter of the hole in mm. But I don't understand the 4- part. Usually that's like a screw size but I haven't seen it like this before. edit: as one commenter said I think it's just to ...
1 vote
61 views

eDrawings Displays Text Differently Than Spinfire

I am generating a very simple DXF file with the netDXF library. The DXF is a polyine box with text in the middle. When I open the file in SpinFire and DWG Trueview the text is centered (image with H ...
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1 vote
377 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? ...
40 views

Transferring the project from "Altium Design" to "SolidWorks" while maintaining silk-screen printing, sizes and everything else

I want to transfer the PCB project to solidwork from altium design, I read forums on how to do it better, and so: Save to STEP. The option is good and working, but I did not like the option, since ...
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1 vote
85 views

How would I convert a GPS system on a drawing to something like Google Maps?

I'll link an image to this question so it'll hopefully make a bit more sense. For some background, I'm sort of a "Jack-of-all-trades" tech guy for my family company. Problems often get ...
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1 vote
498 views

How to draw an arc through 2 known points and tangent to a line

I am using AutoCAD and I was trying to figure out how to draw a circular arc through 2 known point and tangent to a line. When I look at the circle tools I see the following options: When I look at ...
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102 views

Drafting techniques for various views [closed]

I was looking at this previous question and I got bored and started drawing it up just for something to do. The image in the question shows a nice front view and an elevation/section as shown below. ...
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1 vote
155 views

Convert .dxf file to .svg

I'm an software dev and my job is to convert a .dxf file into a .svg file My code actually works, but there are some issues with the dimensions or something similar. Unfortunately, i have no ...
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42 views

What is this 'timber insert' on the construction drawing of a concrete parapet wall?

A sectional elevation of a concrete roof is shown below (drawing is from the early 70s): The roof slab is dimensioned as 6" thick with what appears to be 12" parapet wall with a 'Timber ...
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306 views

Coplanarity Profile Callout Confusion

From Krulikowski (1997), the callout for several coplanar surfaces using the Profile symbol is done by using two surfaces to establish datum plane A-B and then tolerancing the remaining coplanar ...
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271 views

Do drawing dimensions have to start from datum?

When specifying the depth of a cut, should the dimension start from the datum surface or from the surface where the cut will be made? In the example below, a cut of 5mm is made from the surface ...
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How to model Motor Windings in Solidworks?

I want to model a DC motor in order to eventually do some simulations (temperature/cooling related) and I'm wondering what is the best way to model the motor windings? I've seen a few video's on how ...
1 vote
344 views

In what (free) software can I draw bodies in a 3D coordinate system?

I'm looking for a software in which I can make images of this kind.
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1 vote
91 views

Autocad start drawing away from the Z=0 (non-coplanar)

I'm having an issue when I draw some elements. They are been drawn away from the Z=0, is causing to be non-coplanar with other elements. So, I cannot make fillets or can find crossing points. I don't ...
25 views

How do split drawings from this without losing their dimension Autocad

I have a dxf file converted to dwg (unit: millimeters). There are 6 different drawings in the same file, How do I split those to different sheet. I wanted to take their consumption, as they are going ...
122 views

Is my tolerance stackup correct?

Major questions: Are 0.028 locating tolerances divided by two for left/right shift? Do overall drawing tolerances apply to a thru hole with a locating tolerance of 0.028 (max material condition)? If ...
220 views

New Part Number for every firmware update?

When developing an ECR/ECN process, the question of when to roll a rev vs. when to create a new part number must be answered. In researching this question, I've come across multiple sources that ...
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visualization of intersection of two objects [closed]

This is from a design entrance that I am preparing for. I know it's a little different than a theoretical projection drawing that engineering books usually cover. It is more practical and ...
291 views

Engineering Drawing-Projection of intersection curve of two standing cones

I have this projection of two intersecting cones, and I am asked to draw the intersection curve of the two cones on the projection. What is the right way to do it?
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Technical Drawing: Labelling a component that's not part of my design but integral to my system

I am creating a technical drawing of a system I created. Let's call my system, system X. System X is a mounting mechanism for already invented system Y. System Y is customizable, however, system X is ...
76 views

Help interpreting dimensions from this drawing

Why there are different dimensions for the same measurements on this drawing? For example 0.127mils and 0.097 mils pin to pin. Or highlighted 405 and 385 mils. I can't find anything on the datasheet ...
1 vote
58 views

How to communicate to keep original dimensions of a part in a technical drawing?

Example: let's say that I have a rectangular part that I would like machined. I'd like to cut it to change the length, but the width and thickness are fine as is. The width and thickness are not nice ...
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