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Basics of CADquery Python Module | FreeCAD Python | Python Programming|
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May 19, 2025
#FreeCAD #FreePython #freecadtutorial In this Tutorial I have Explain Basics of CADquery Python Module to create high quality 3D parametric models with CADquery Workbench. ▶️ Get my Complete FreeCAD Course : From Zero to Expert ! https://ko-fi.com/s/1ab4385434 ▶️ Join my channel membership and keep supporting my work: https://www.youtube.com/channel/UCcn6z2whMaFu-_LDsEXCfVA/join ▶️ Visit my website for more info on FreeCAD-: https://mechnexus.com/ ▶️ Download Source File of Tutorial-: https://mechnexus.com/mechnexus-youtube-tutorial-source-file/ ▶️ Buy Me a Coffee I am very grateful that you watch my videos and I am constantly trying to improve the quality of the videos on this channel. If you'd like to help me do this, please consider supporting me so that I can to continue to produce content for your enjoyment. 👉 Help support this channel by buying me a coffee: https://ko-fi.com/mechnexus
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Hello friends welcome to free cat tutorial and in this tutorial we will
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learn about the cat query workbench which is a python based model to create
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the high quality 3d models. So here I have already installed the cat query
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workbench and once you install the cat query workbench and activate it you will
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get here the cat query tab and you will see here multiple options like new script
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open script execute script with the help with keyboard shortcut so installing this
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cat query workbench is very easy just head over to the tool then add-on manager
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and search for the cat query here and install it So here is the module and install and activate it and restart your free CAD
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So what is this CAD query and what it is used we will officially see its github page
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So basically cat query is a python module for building 3D models and using this tool
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or using this workbench you can write simple script to produce high quality models and
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you can visit this github page to get the more information about the cat query workbench
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So in this tutorial we are not going to write any custom code
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of that we will see some standard script which comes with the cat query workbench so here
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is a option called open script and if I see here there are the many script has been already
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written and which you can use as per your requirement so for example I want to create
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a simple plate so I will use this script called simple block and I will say ok and if you see
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deep into the code we can see that our first line of a command is a import cat query as CQ this
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means that with the help of this command we are importing the cat query library and here we are
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creating a simple plate so we have defined the length height and thickness
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and here if you see that CQ means cat query and work plane is a XY and here we
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have called at the length height and thickness which we have a defined here
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and here is a show result so this is the code written in a Python now we will
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execute it to execute the code go to the cat query tab and say execute script so
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once you execute the script that simple block has a part has been made in a free
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cat now I will say zoom to fit I can say isometric so it has modeled me a part
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with length height and thickness and now if I change anything here for example I
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want to thickness of 2mm so I will go here and you the 2 mm and length I want 100 and
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width I want 50 and I will go and say execute a script so you can see that the
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parts has been modified and if I go here and if I want only 1 mm thickness then I
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will go here and I say execute a script so you can see that it has been modified
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to 1 mm and if I wanted to make a 10 mm thickness then I can do the same so
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So this is the 10mm. So this is how we can easily make simple models with the help of a change in code and basically
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we have just changed the value. And now if we go to the open script then we can see the many examples here which you can
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use as per your requirement. Now we will go to the model here which we have created here
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Now if I want to give the chamfer to all these edges or fillet to all these edges and if
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I select this edges all four edges and I switch to the part design workbench
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and if I say fill it so what error we are getting that create a body so this
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means that this is just a shape it is not a body but still we can use this
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shapes to modify our part so the basic idea is that I will create a body here
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and then I will select this shape which we have created with with the help of
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this Python script now we will drop it over the body now you can see that this
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has been come as a base features and now if I try to fillet this edges
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I can fillet it and I will say okay now I can save this part
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cat query as r2 and now if I close this all the windows and now I will open my
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part here now this this having no any dependency with the cat query now it is
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an independent model now I can do whatever I can do with this part
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so you can see that the shape and now this we have imported a base
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discard now we will see some other quotes of the cat query now I will go to the open script now
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here I will say block with bored center hole I will say ok and here we can see
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that it is a plate length height and thickness center dia 22 and it is a made
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on a xy plane length height and thickness now we will execute this code
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and we will see what happens so once we have executed the code we have got our
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model here so this is the hole which we can see here we can see here the 80 60
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10 and hole dia 22 and for example I want to change this hole dia from 20 to
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10 and I will say execute script so you can see that hold I has been shorter
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similarly I can change length height and thickness thickness suppose that I want
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to give 2 mm so you can see that it has been changed now same way as we have
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did in our last part we can go to the part design workbench and create a body
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and we can use this shape inside the body and now we can do anything either we
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want I want to adapt the whole fillet chamfer whatever with this part so this
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cat query workbench is very time-saving to create the simple parts in fact if we
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visit to the category library we can also see some complex example of the
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script for example block with counter boreholes now I will close this one
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and I will execute the script and I will say zoom to fit so now you can see that now it
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is a plate with four counter bore holes and one hole at the center and understanding the
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cat query code is very simple because it is a very simple script
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so here is the length, height, thickness, hole dia counter bore hole dia depth
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and here is the plane and here is the positions length and height so let see the an example of changing the plane so if I say if we if I on my plane here sorry it is a shape so
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So I will go here and say yz and I will execute the script
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So the part is failing
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So you have to deep dive into the code and now if you are changing the work plane here then you have to
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change this one with respect to Z X But I'm not going into the depth of this
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Once you start making some simple script or simple part with the help of a query
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Then you will understand that how to play with the code and and now we will see some more example now we will move to the open script now
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here we can see one example of the this bottle and I will say okay so we can see
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that here is a set up the length height and thickness and now we will simply
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executed so you can see that a bottle has been made but you have to deep dive
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into the code if you are not to change anything on the code but if you are not
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to make any similar models then you can just simply run the query and you can
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just create a shape and then go to the part design workbench and create a body
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and and now you can do anything with the this part so this CAD query workbench is
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very time-saving with the help of this ready-made script here and when you
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study all this script when you run this script in a free CAD you will get the
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more idea about it so this is all about this tutorial and how to use the cat query python modules to create
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a simple 3d modules in fact the complex model also if you are a good in a programming then
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you can play with this cat queries workbench so this is all about this tutorial I hope
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you have liked this tutorial and if you like my method of teaching then you can support
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me please visit the video description links I will come with more useful tutorial on a
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free cat thank you for watching and thank you for your valuable time
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