Don’t be afraid of Blender 3D, Part 4… Making Holes!

We'll be digging holes today!

If you followed along in part 3, you where lucky enough to make your model with some interesting design effects using proportional editing.  If you didn’t follow part 3, click here and do this step first.

Now, we are ready to go forward.  This is a fun part because we actually get to use the computer and destroy our design!  LOL…  Not really.  We are going to use several more modeling features in blender.  These functions are in the video below this paragraph, and an outline of the functions follows the video in this article.

If you have any questions, or have an issue following along, try to slow down the video a bit, or just go to youtube, and sed me a message.  Let’s get started.

If you don’t have a numeric keypad for your computer, I highly recommend getting one.

Click on the keypad to the left, and you can purchase this on Amazon for only $8.99.

 

Watch Part 4 here!

Ring Doorbell

Who's at your door?

This may sound crazy, but it isn’t just for security!  While the Ring Doorbell was designed for your security, I use mine in a different way…

When I’m out back, and the doorbell rings, I can almost instantly see who is there, and that for me, is Convenience!  

Lets look at the functions we've used in Part 4

Boolean - Difference tool
The boolean tools in Blender are easy to use, once you understand them.  I believe I’ve covered this before, and I’ll link the original article here.  In Part 4, we are actually going to be using blender 2.8, and the model we’ve created in Part 3. To use the boolean tool properly, let’s stay with a though of objects.  Say, for instance we have a long thin pole, and a big block.  We want to make a hole in the block, the same size as the pole.  To do this, we first need to place the pole through the block in our 3d window.  Once you have it in place, we then go on to the next step. Make sure that you have the pole selected.  This is considered the “first” object.  While the pole is still selected and highlighted, then hold down the “shift” key, and select the block.  This is considered the “second” and last object. With both objects selected, you should notice that they are different colors, but both highlighted properly.  The next step is to use the “Boolean Difference” tool, on the edit tab. Once you click it, you should see that the block remains on your screen, that the pole has disappeared, and there should be a hole in the block!  If this is what you see, then Great!  You Did It!  That is the proper way to use the difference tool.
Snap Tool - Works Like a Magnet

The snap tool is really cool.  Not just because you can snap two objects together, like magnets, but because you can set up the snap tool to take differently shaped objects, and snap them together in specific orientations and alignments.  This will come in handy when working with “plugs”.

When working with the snap tool, there are some things you need to be aware of to make it easy to work with.  In the video, I’ll cover them, but relatively briefly, so that you can see how I set up the objects to use the too, then apply it.

For Part 4, we will be using this tool, the snap tool, to take a plug, (a cut out of a diamond insert) from the mounting we created in Part three.  Again, if you haven’t worked on part three, click here.

The snap tool, when combined with the boolean ‘difference’ tool, allows us to design a piece of jewelry, and put a hole in it where we can later set a gemstone or diamond once the object has been 3d printed and cast.

What are we going to cover in part 4?

The video of Part 4 is broken into three parts.

We will begin the video by creating several objects and briefly learn how to use both the snap tool and the boolean difference tool in Blender 3d v2.8

No special add-ons need to be installed, and you can use the settings from Blender that are set up at installation

Part 1 of the video….   First, we will create two different objects.  The first will be a bar.  Think of it as a “bar of gold”, because we are designing jewelry.  The next object will be a cylinder.  This will be use to cut something out of our gold bar.

Part 2 of the video…  First, we will create a sphere.  Once the sphere is set up, we will create another cylinder, and us it to put holes in the sphere, but this time, we will use the snap tool to align the cylinder to the surface of the sphere.

Part 3 of the video…  We will start where we left off on Part 3.  With our ring design, loaded, we will add a new object, and modify it to resemble a plug for a gemstone insertion.  With the snap tool, we will move the plug(s) into the correct location in our mounting, and create the holes for the gemstones.  At that point, I will show you quickly how to finish up the mounting you’ve designed with me, and save it.

Are you ready?  Let’s get started.

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