# Questions tagged [drawings]

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### How do I perform a lead of helix cut?

In this old blueprint from 1944, it calls for a lead of helix, 1 turn in .2" on red arrow: No other info is provided. This is a top view of the part. Here's ...
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37 views

### Find dimension of surface arc in blueprint given instructions

I'm trying to find the dimension for the surface arc as shown here as L: It doesn't provide the dimension directly, instead it says: ...
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### What does this F symbol means in blueprints?

What does this F (similar to mathematical function symbol) means in blueprints? Year of blueprint 40s.
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### Find height of cone point in blueprint

In this blueprint I was not able to find where the height of the point of the cone angle should be. Here's the original blueprints: http://library.centerofthewest.org/digital/collection/WRAC/id/398/...
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### Locating an angular surface using GD&T

I'm having doubts about how to dimension an angular surface using proper GD&T techniques. I want to achieve the 6 mm feature of size (FOS) at an angle of 89 deg. to Datum B to within an angularity ...
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### CNC Mill an Airfoil Shape in MasterCAM

I have this airfoil shape which I created using MasterCam. I used the milling function called MULTISURFACE. When I select the green highlighted spot above, it will throw me an error. Is there a way to ...
30 views

### What reference lines can be trusted and what points are being dimensioned

Based on the dimensions for the fold lines of the part above, the part is not square in the corners. It is my understanding that the short sides are actually at an angle other than 90 to the long ...
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21 views

### Mechanical Drawing Ventilation Abbreviations - Canada

I'm trying to figure out what the abbreviations are for exhaust fans in mechanical drawings. I've posted an example below, which is shown in the legend as Supply Air (SA), along with its size and ...
59 views

### Can I omit the scale information in the technical drawing of a mildly complex mechanical part if I provide all of the necessary dimensions clearly?

and thanks in advance for taking the time to help me. TL;DR: I work for a company where I need to make technical drawings—mostly using SolidWorks—of some mechanical components. Do I have to include ...
23 views

### Can one refer to perpendicularity in GD & T system using degrees?

I am studding machine element design and drawing and I have this question. Can one translate between GD & T perpendicularity indication to something in degrees? I saw the following picture in the ...
68 views

### Find profile view when having frontal and top views

I need to find profile view of an drawing when I have frontal and top views.
251 views

### How to hide lines from adjoining faces in Fusion360 drawings?

I'm designing a holding tank with a complex set of planar faces in Fusion 360 and want to produce face-oriented 1:1 drawings to fabricate a cardboard mockup for interference testing. I'm creating ...
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### How to place a chamfer on the end of an angle cut pipe

Background The part above is from 1944 V2 plans which I am using as real world practice examples to teach myself 3D modeling using Inventor LT 2021. Therefore there is no original designer/engineer ...
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1 vote
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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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38 views

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
68 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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470 views

### 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
73 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
736 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
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### 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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107 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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161 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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### 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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1 vote
56 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
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### 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
101 views

### 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
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### 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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105 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
88 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
338 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
1k 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
266 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
327 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
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### 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
57 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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### 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
1k 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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### 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
87 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
2k 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? ...
76 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
162 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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2k 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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226 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
222 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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### 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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566 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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