engineers

How to Calculate CAD Scale Factor?

Industrial Technical Drawing

Part 7 of 13 in our How To Use AutoCAD series

When working in AutoCAD, you’re not only working with objects and drawings, you’re also working with dimensions and measurements. The latter two elements are what can make or break your drawing. If you can’t resize basic values when you need to, your drawings can’t be as accurate as needed.

Calculating a scale factor in CAD is, thus, a simple, but important task. When the drawings are printed for production, they’re represented much smaller than they actually are. Hence, we need to understand and implement the scale factors in order to adequately size dimensions, text, blocks and lines.

In short, the scale factor is the relationship between our printed units and our drawing units.  The simplest way to calculate the scale factor is by using these simple formulas.

For calculating scale factor out of architectural drawing scale:

  1. Choose your scale. For example:  1/4” = 1”
  2. Invert the fraction and multiply by 12 to get:  4/1 x 12 = 48
  3. Your scale factor is 48

For calculating the scale factor from an engineering drawing scale, only multiply the feet by 12. For an in-depth look at both engineering and architectural scales, check out this tutorial on CAD Scale Factors by ArchToolbox.

How To Align And Scale Objects Simultaneously?

Part 6 of 13 in our How To Use AutoCAD series

As you know, AutoCAD is all about creating accurate drawings. So being able to adjust and fine tune the placement and size of your objects accordingly is a necessary skill to have.  Whether you need to  resize your objects or move them around, you need to be able to manipulate your drawings accurately and with efficiency. That’s why it’s important to master the Align tool early on.

Here’s how to align and scale objects at the same time:

1. Identify which objects you would like to align. Go to the Modify panel, click on the drop down arrow and select the “Align” tool, located on the bottom left side.

Locating AutoCAD Align Tool

2. Select the object that you wish to align and hit “Enter”.

3. Select the source point. The source point is a part of the object that you align (for example, its edge, side or center). After doing so, specify the destination point of the alignment. The destination point represents a point to which you align your selected object. Hit “Enter” and specify the second source and destination point.

Specifying Second Destination Point

4. Either right click on the drawing window or press “Enter”. You’ll be prompted on whether you want to “Scale objects based on alignment points?” or not. If you’d like AutoCAD to automatically scale the selected object to fit your destination object, click Yes. Otherwise, click No.

Once you get the hang of it, this method will come as second nature. Mastering this tool is great skill to have under your belt. Not only does it allow you to quickly edit CAD designs accordingly, but it’ll also give you a better sense of how AutoCAD professionals work with the application.

How To Create Custom Hatch Patterns?

Part 5 of 13 in our How To Use AutoCAD series

One of the great things about AutoCAD is that it can be used to design drawings meant for different types of industries. And because AutoCAD designs can be intended for any structure under the sun, the material being used or involved in the design’s construction can vary greatly.  

This poses an interesting situation when AutoCAD users need to fill in the hatches of their drawings. These hatches represent the real material to be used. So getting the hatch patterns just as accurate as the drawings themselves is important.

Now, although AutoCAD offers plenty of hatch patterns on its own, sometimes we may want to personalize our drawings and implement our own hatch patterns. You can do this by following these simple steps:

1.In your AutoCAD document, draw a desired pattern using a tool from the Draw panel.

2. In the Block panel, click on the “Create” command, located in the top right corner.

Selecting Create Block Option

3. Name your pattern and click “OK”. On the pop-up, choose “Select objects”.

4. Click on your drawing until it gets light blue, and hit Enter.

5. Now select “Pick point” and place the cursor on the bottom left corner of your pattern drawing.

Selecting Pick Point Option

6. Hit “OK”.

7. Go to the “Express Tools” tab > Draw panel > Super Hatch.

Selecting Super Hatch

8. Choose “Block” as your desired pattern type, select your block by name and hit “OK”.

Selecting Hatch Pattern

9. Fit your pattern by following instructions. When you’re satisfied hit Enter.

10. Click on the desired area that you want to hatch and once selected, hit Enter.

All done! For advanced users who are interested in more hatch pattern customization options, check out this tutorial from Ellen Finkelstein.

How To Scale Objects With A Reference?

Creating CAD Drawing

Part 3 of 13 in our How To Use AutoCAD series

For AutoCAD users, being able to resize and scale a design is crucial. It can mean the difference between a successful project and a disastrous design. This is why AutoCAD comes equipped with a ton of advanced features to make scaling designs an easy task. 

As a matter of fact, AutoCAD will go so far as to allow you to scale objects by factor or reference using the Scale command. Changing the size of objects by reference is based on the existing distance for specifying the new size of your object.

Here’s how to scale objects with a reference in AutoCAD 2016:

  1. Select the Scale command.
  2. Select the desired object.
  3. Specify the current distance.
  4. Specify the new intended size.

It’s also possible to scale the entire drawing by Reference, not only individual objects. To do that:

  1. Select all objects in the drawing.
  2. Using Reference, select two points.
  3. Specify the desired distance to scale all the objects in the drawing accordingly.

Scaling objects is a detailed oriented task that may seem tedious at first, but with the Scale command, you can master the task in as little as 4 steps.