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| - | ===== Wood CNC overview ===== | + | ====Cutting Items==== |
| - | ==== Common terms explained ==== | + | * Hard wood |
| + | * Soft wood | ||
| + | * MDF | ||
| + | * Plywood | ||
| + | * Acrylic | ||
| + | * Delryn | ||
| - | Most of the information below is taken from a direct transcript of a series of videos made by Carbide3D, the manufacturer of the Shapeoko CNC, with some minor alterations to match our particular combination of machine, router and accessories. There are links at the bottom of the page to the original videos and we would recommend you take the time to watch these though the induction quiz is just based on the transcribed text on this page. | + | ====Banned Items==== |
| + | * Metal | ||
| - | \\ | + | ====== Shapeoko 3 XL – Common CNC Terms ====== |
| - | ===CNC=== | + | Most definitions here are adapted from Carbide3D’s video series, with small changes for our machine |
| - | Computer Numerical Control is a manufacturing method that automates the control, movement | + | **Tip:** These are the basics you’ll need for your induction quiz. Links to the original videos |
| - | \\ | + | ===== Core Concepts ===== |
| - | ===CAD=== | + | **CNC** – //Computer Numerical Control// |
| + | A computer-controlled machine that moves a cutting tool with high precision. Our laser cutter, 3D printers, and vinyl cutter are also CNC machines. | ||
| - | CAD software, | + | **CAD** – //Computer-Aided Design//\\ |
| + | Software used to design | ||
| + | * **We use:** Carbide Create | ||
| + | * **Why it matters:** This is where you create | ||
| - | \\ | + | **CAM** – // |
| + | Software that converts your CAD design into movement instructions for the CNC. | ||
| + | * **We use:** Carbide Motion (pre-installed on the workshop Raspberry Pi) | ||
| + | * **Why it matters:** This is the “translator” between your design and the machine. | ||
| - | ===CAM=== | + | **G-code** |
| + | The text-based “language” CNC machines read. Generated automatically by CAD/CAM software. You don’t need to write it manually. | ||
| - | CAM software, Computer Aided Manufacturing, | + | ===== Machine Movement ===== |
| - | \\ | + | **Axes** |
| + | * **X:** Left ↔ Right | ||
| + | * **Y:** Front ↔ Back | ||
| + | * **Z:** Up ↔ Down | ||
| + | //Tip: Y has the “Y rails” and Z is the vertical axis — that leaves X as side-to-side.// | ||
| - | ===G Code=== | + | **Home Position** – The fixed point the machine returns to after startup.\\ |
| - | The is the language the CNC speaks, this is just a fancy word for the coordinates and commands that the CAM software spits out. This code is generated automatically by the CAD software. You do not need to write any code yourself. | + | **Work Zero** – Your chosen starting point for a specific job (usually a corner or centre of the stock). |
| - | \\ | + | ===== Design Files ===== |
| - | ===X, Y and Z=== | + | **Vector Graphics**\\ |
| - | These are the directions or reference for the movement | + | Drawings made of lines and points (e.g., SVG files). Ideal for CNC because |
| - | \\ | + | **Toolpaths**\\ |
| + | The routes your cutter will follow. Defined in CAD, turned into G-code in CAM. | ||
| - | ===Vector Graphics=== | + | ===== Materials & Workholding ===== |
| - | Vector graphics, such as images saved in a SVG format, consist of lines and nodes, sometimes called points. These lines and nodes define the boundaries of any shape and art that you want to put in the computer. The information in the vector graphic allows the machine to follow the coordinates and create your art. | + | |
| - | \\ | + | **Stock** – The material you’re cutting.\\ |
| + | **Spoilboard** – A sacrificial board under the stock to protect the machine.\\ | ||
| + | **Workholding** – Clamps or other methods to secure your stock so it doesn’t move. | ||
| - | ===Tool Paths=== | + | ===== Cutting Parameters ===== |
| - | Tool paths are the paths created by you and the CAD software. You'll define how a tool is used and where it is going to go along a tool path. This is the go between or messenger for the CAD to CAM. Your tool pathing choices are converted into coordinates for the CAM software to spit out to the machine. | + | |
| - | \\ | + | **Feed Rate** – How fast the cutter moves through the material (X/Y).\\ |
| + | **Plunge Rate** – How fast the cutter moves down into the material (Z).\\ | ||
| + | **Spindle Speed** – How fast the bit spins (RPM), adjusted on the router dial.\\ | ||
| - | ===Stock=== | + | //Why it matters:// These three settings determine |
| - | The stock is the material that you put in the machine to be cut. | + | |
| - | \\ | + | ===== Tools & Cutters ===== |
| - | ===Feeds and Speeds=== | + | **End Mill / Bit** – The cutting tool. |
| - | Feed rate is the rate at which your end mill is being pushed through the material. This is generally in X & Y, so forward | + | * **Flat End Mill** – Flat tip, general-purpose cutting. |
| + | * **Ball End Mill** – Rounded tip, for 3D contours | ||
| + | * **V-Cutter** – Angled tip, ideal for engraving and sign work. | ||
| + | * **Fly Cutter** – Large flat cutter for surfacing spoilboards | ||
| - | The speed is the spin rate generated by your router. For the Shapeoko you'll adjust this via the dial on top of the router. | + | **Flutes** – The cutting edges on a bit. More flutes = smoother cut, fewer flutes = faster removal. |
| - | These two factors, in concert with your end mill, cut and shape your stock to produce your item. Feeds and speeds | + | **Upcut / Downcut** – Direction of flute spiral: |
| + | * **Upcut:** Pulls chips up and away (better chip removal, but can lift stock). | ||
| + | * **Downcut: | ||
| - | \\ | + | **Shank size** – the size of the diameter of the solid part of the bit, two sizes are currently supported by our router: |
| + | * **1/8** - 1/8 inch (3.175mm). | ||
| + | * **1/4** - 1/4 inch (6.35mm). | ||
| - | ===Types of Tools=== | + | ---- |
| - | Cutters, end mills or bits. | + | |
| - | End mills have a varying number of flutes or cutting and evacuation surfaces. These flutes travel in an upward or downward spiral on the shaft of the cutter. | + | |
| - | **The Flat End Mill** is one that finishes in a completely flat surface designed to give you a flat bottom cut in your stock. These are the workhorses of CNC. 1/4" and 1/8" flat end mills will get you started on your first projects. | + | ===== Machining Types ===== |
| - | **The Ball End Mill** finish in a ball whose nose radius is equal to 1/2 the diameter of the tool. This is a fancy way to say that the ball at the end is the same diameter as the end mill. The ball nose is used for a variety of milling and slotting operations. You'll see it frequently in 3D finishing | + | **2D Machining** – Cutting shapes at a constant depth.\\ |
| + | **2.5D Machining** – Multiple depths, but cutting one flat layer at a time (e.g., pockets + cutouts).\\ | ||
| + | **3D Machining** – Machine moves in X, Y, and Z simultaneously to create complex curves.\\ | ||
| - | **V Cutters/ | + | ===== Safety ===== |
| - | **Fly Cutters**. These are used for face milling material, flattening | + | **Emergency Stop (E-stop)** – Red button to immediately stop the machine.\\ |
| + | **PPE** – Safety glasses, hearing protection, dust mask.\\ | ||
| + | **Dust Collection** – Removes chips and dust from the work area. | ||
| - | **Upcut | + | ===== More Info ===== |
| + | | ||
| + | * [[https:// | ||
| + | * [[https:// | ||
| - | There are lots of other specialty end mills that you may come across or choose to experiment with as you progress in CNC But the above will take you 95% of the way to making nearly anything. | ||
| - | \\ | + | ===== Powering up the machine ===== |
| - | ===Types | + | * Remove the padlock and turn the isolator to power on the machine, the enclosure lights should turn on.\\ |
| + | * Is the Raspberry Pi isn't already running press the silver button to boot it up.\\ | ||
| + | * Rotate the emergency stop button clockwise to reset it if required.\\ | ||
| + | * Check that the belts look in good condition, no cuts of frays.\\ | ||
| + | * Check that there is no thick dust build up on top of the big silver gantry' | ||
| + | * Check that there is nothing left loose inside the enclosure that could jam the movement of the router. | ||
| - | 2D, 2.5D and 3D machining. These are three types of machining you will hear referenced. | + | ===== Starting the software |
| - | 2D and 2.5 are nearly | + | * Start Carbide Motion by pressing |
| + | * Press the " | ||
| + | * Press on " | ||
| - | 2.5D machining indicates that the features of the item are being created at different depths depending upon the feature. Vectors can be used as accent features, not just as cutouts, a pocket inside an item which was later cut out would be indicative of 2.5D machining. | + | ===== Installing probe pin ===== |
| - | 3D tool paths are created off 3D models. Depending upon the software | + | The first step is to install |
| - | ===== Instructions ===== | + | Choose the probe pin that matches the size of the collet you’ve just fitted. The probe pins are straight metal rods. Insert the pin into the collet and tighten the nut by hand. Use the measuring guide to check the pin isn’t sticking out too far. Once correct, hold the spindle lock and tighten the nut with the 17 mm spanner. |
| - | \\ | + | ===== Clamping down stock ===== |
| - | === Ground Rules === | + | In Carbide Motion press the Jog button |
| - | * All users must complete an induction prior to using the machine. | + | |
| - | * No metal materials, this CNC is just for use with wood and suitable plastics. | + | |
| - | * Don't try and bypass | + | |
| - | * Wear eye protection when the door is open. End mills can shatter if crashed. | + | |
| - | * Wear hearing protection and offer hearing protection | + | |
| - | * Keep fingers away from moving parts. | + | |
| - | * Tidy up afterwards. Vacuum up your dust and wipe down any dirty surfaces. | + | |
| - | \\ | + | Place your stock on the spoilboard so it’s aligned with the grid. The spoilboard has threaded holes spaced 100 mm apart, and the grid lines are aligned with the machine’s X and Y motion. This makes it easy to square your stock with the router’s movement. |
| + | Use the small stop blocks on one side to position the stock — each block has two smooth sides and two with small serrations. The serrated sides give better grip but can leave small marks on the stock. | ||
| + | Use the Crush-It clamps on the opposite side to hold the stock securely. Each clamp has replaceable front jaws (smooth or serrated) for different materials. Loosen, but don’t remove, the front screw on the clamp. Position the clamp tight against the stock and bolt it down. Then tighten the front screw to push the clamp face firmly against the stock. | ||
| + | Make sure the clamps don’t block the toolpath and use bolts of the correct length — too long and they can bottom out in the threaded holes. Tighten evenly so the stock sits flat and secure. | ||
| + | ====Walkthrough==== | ||
| + | Turn on isolator and boot raspberry PI. | ||
| - | ===Creating a design in Carbide Create=== | + | Turn on red emergency button if needed |
| - | At the time of writing the latest version of Carbide Create is V7 build 764. | + | |
| - | The is just a basic How-To to get you started. There are links at the bottom | + | Start Carbide Motion by clicking |
| - | When you first open Carbide Create you will be presented with the design screen. This is where you create/ | + | {{: |
| - | Hovering your mouse over any of the buttons brings up a tooltip with a brief description of what it does. | + | Click the connect to cutter button |
| - | == Stock and machine settings == | + | {{: |
| - | The first step is to enter your stock and machine settings. | + | Give the CNC a visual check to make sure everything looks OK |
| - | Click on the settings icon. | + | Click initialise machine and the spindle moves forward |
| - | {{: | + | {{: |
| - | This brings up the 'Job Setup' box. | + | Remove dust shoe using clip on right and using the 17mm spanner and the yellow locking button on the side of the router fit the probe pin which is the same size as your bit bearing in mind you might have to change between the 1/8 and ¼ collet. |
| - | {{: | + | {{: |
| - | Enter the width and height of your material(stock). Once applied this will also update | + | In Carbide Create press the Jog button in the top menu and using either |
| - | Enter the stock thickness, if you are cutting all the way through it then it's very important to get this correct. The 'Zero Height' | + | {{: |
| - | The Toolpath Zero drop down allows you to select where in relation to your design you are going to set the zero point on the machine. This might sound complicated but it should become clear when we cover setting the workspace zero point on the machine. The default is Lower-Left. | + | Clamp stock to bed making sure it doesn’t move |
| - | Under the ' | + | Move the router into the bottom left corner, attach |
| - | Once you have finished click ' | + | {{: |
| - | == Creating a basic design == | + | Put the probe plate tight to the bottom left of your stock and using the jog screen or the pendant move the probe into the circle in the probe plate. |
| - | Now you can use the 'Crete Vector' | + | |
| - | {{: | + | {{: |
| - | For this example we are going to draw a square 150mm X 150mm which will be the outer line of our design. | + | In Carbide Motion click Probe -> corner -> Begin Probe |
| - | Click on the create rectangle tool, click once on the grid to select the centre of the rectangle then move your cursor to set the size of the rectangle and click again to finish. You don't have to worry about getting the square the correct size or in the correct place when drawing it as these can be easily changed later. | + | {{: |
| + | {{: | ||
| - | With the rectangle drawn and selected | + | Remove magnet |
| - | {{: | + | {{: |
| + | {{: | ||
| - | In the ' | + | Make sure you are clear from the CNC as the head will move then you click OK. |
| - | The ' | + | {{: |
| - | {{: | + | Go back to run menu |
| - | The Anchor point selection allows you to choose what point on the shape to use for the measurements. The Position shows the location of the selected point in relation to the bottom left corner. X is how far the shape is away left to right and Y is the distance bottom | + | Plug in USB stick and click cancel |
| - | {{: | + | {{: |
| - | For the sake of simplicity I will not be covering any of the other ' | + | Click the load new file button and navigate to computer -> / -> media -> cncuser -> your USB drive and confirm from description that you have loaded |
| - | == Edit Tabs == | + | {{: |
| - | In the ' | + | {{: |
| + | {{: | ||
| - | If you are cutting a part out from a larger piece of stock that it clamped in place it is important that your part doesn' | + | press start job. |
| - | The easiest way to ensure a part you want to fully cut out doesn' | + | {{: |
| - | Selecting the 'Edit Tabs' option will allow you to click anywhere along a vector line to place a tab. You can also click the 'Clear all tabs' button to delete all the tabs. I will click roughly | + | Then press start on next screen |
| - | Tabs added to the square. | + | Spindle will move to front right and the screen will ask you to fit your first bit, fit bit, make sure bit doesn’t stick out lower than the bitsetter measurer. you might need to adjust height of dust shoe. |
| - | {{: | + | Fit the dust shoe, close doors and press resume. |
| - | == Importing designs == | + | {{: |
| - | On the main design screen, just below the Create Vector section is the Import section. | + | {{: |
| - | {{: | + | Spindle will spin up and there will be a message to set the speed dial. If the dial is correct just hit resume, if you need to change it open the door, the spindle will stop, set the speed, close the door and hit resume |
| - | As the title suggest, this allows you to import designs. The ' | + | {{: |
| + | {{: | ||
| - | For this design I am going to import the Hackspace logo the adjust its size and position to centre it within the square. Select ' | + | The first job will start and start cutting. |
| - | {{: | + | {{: |
| - | Something to note is because this file contains two vector drawings and both are selected another section becomes visible in the left hand tool bar. | + | Opening |
| - | {{: | + | {{: |
| - | The Boolean section has tools to combine separate vector drawings whilst doing things like cutting one shape from another or only keeping parts that overlay. Please refer to the manual for more details. | + | Hitting |
| - | + | ||
| - | For this particular design I want the cog outline but not the big H inside it, so I will click on an empty space to deselect | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | I can now click on the cog outline to select it and use the ' | + | |
| - | + | ||
| - | To align it with the square I could use the move tool and work out the position relative to the stock bottom left corner but the easier way is to use the align tool. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | This can work in a couple of ways. If one vector is selected then it can align it to the stock, if two vectors are selected you can align one vector with another. The last vector to be selected is the vector that the other are aligned to. In our case we want to align the cog with the square so I will select the cog first and the square last. | + | |
| - | + | ||
| - | Click on the cog first then hold the Shift key and click on the square so both are now selected. | + | |
| - | + | ||
| - | Click on the Align tool button and the 'Align / Space' tool bar will show. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | The 'Align Reference' | + | |
| - | + | ||
| - | We want to align the centres so we are going to select the middle button in the 'Align Centres' | + | |
| - | + | ||
| - | The cog is not aligned with the outer square. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | The last thing we are going to do it add some text inside the cog. In the ' | + | |
| - | + | ||
| - | This opens the Create Test toolbar and adds the text to the centre of your design space. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | You can then use the tools on the left to input the text you want, select font size and spacing, change the alignment of the text change it from straight text to arcing text. For my design I am going to use the parameters below. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | I can then use the same steps from above to align the test with the centre of the cog or square. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | For this How-To the design is not complete. The next step is to generate the toolpaths for the machine. | + | |
| - | + | ||
| - | Don't forget to save your work by clicking on File - Save. | + | |
| - | + | ||
| - | ===Generating toolpaths in Carbide Create=== | + | |
| - | + | ||
| - | Now we have our completed design the next step is to create the tool paths so the machine knows what we are milling out and with what tools. | + | |
| - | + | ||
| - | Select the ' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | There are a number of different 2D toolpaths available, for our design we will be using the Contour, Pocket and VCarve toolpaths. | + | |
| - | + | ||
| - | To cut our design out we first need to pocket out the cog shape, carve the text into the bottom of the pocket then finally cut around the outside of our design. You should create your toolpaths in the same order you plan to run the actually cutting jobs on the machine. | + | |
| - | + | ||
| - | SO our first step is to pocket out the cog shape. Click on the cog vector line so it is selected. Click on ' | + | |
| - | + | ||
| - | You will now see the Pocket toolpath parameters. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | The first step is to select the tool/bit you are using. Carbide Create has a tool library where each bit is already configured with the recommended Speeds & Feeds for that particular bit used with a particular material type. The Hackspace provides a small selection of bits that are equivalent to the some of the bits in the tool library. We recommend you stick to using this bits until you are more confident with using the machine. | + | |
| - | + | ||
| - | I want to perform the pocket with a 1/8" ball nose endmill to give the edge of the pocket a rounder shape and give the bottom of teh pocket an interesting texture. | + | |
| - | + | ||
| - | To select your tool click on the ' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | In this window you can override some of the default setting for the tool, we are going to use all the default settings for our design. | + | |
| - | + | ||
| - | The top section allows you to change the selected tool by clicking the the ' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | The tools are separated into different categories based on the material you will be cutting. Again please note that even though there is a Aluminium category cutting metal on this CNC is not permitted. | + | |
| - | + | ||
| - | The tool I want to use is the 1/4 Ball Endmill which had the equivalent tool number #202. My material is a hardwood so I will navigate to the ' | + | |
| - | + | ||
| - | The next selection down in the ' | + | |
| - | + | ||
| - | The next section down is the ' | + | |
| - | + | ||
| - | The final option is the ' | + | |
| - | + | ||
| - | Once you are happy with your chosen parameters click ' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | The next step is the text VCarve. Like before we are going to select the vector we want to work with, the text " | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | Like before we can click on ' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | We now need to make a change to the cutting depth. As we are VCarving on the bottom of a pocket cut-out we need to change the start depth to the same depth that we cut the pocket to. SO in this instance out start depth needs to be 10mm. We then need to change the Max Depth. The way VCarving works in Carbide Create is that regardless of what the Max Depth is set to the V bit will only go as deep as it needs to carve out the width of the text. The one cavate to this is if Max Depth is set to is set to a shallower depth the bit will only cut to the set shallower depth. For this design I will set the Max Depth to 15mm meaning the tip of the V bit will either cut to 5mm depth or until the width of the V bit fills the width of the text, whichever comes first. | + | |
| - | + | ||
| - | As before, give it a suitable name and then click OK. This job should now appear under the 'Cog Pocket' | + | |
| - | + | ||
| - | The final step is to use the ' | + | |
| - | + | ||
| - | As before select the vector we want to work with, the outer square, and click on the ' | + | |
| - | + | ||
| - | The Contour Toolpath parameters are very similar to what we have already seen but with a couple more options. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | In the tool section we are going to click Edit then Select Tool and select the tool #102 End Mill (1/8") from the same Hardwood section we have used before. | + | |
| - | + | ||
| - | In the Cutting Depth section we are going to set out starting depth to 0mm, which if you recall is the top of our stock, and set the Max Depth to cut all the way through our stock. You can enter the depth manually or click on 'Use Stock Bottom' | + | |
| - | + | ||
| - | In Toolpath Setting there is a dropdown that allow you to choose an offset, either ' | + | |
| - | + | ||
| - | The next section down is ' | + | |
| - | + | ||
| - | Lastly, give the toolpath a suitable name and click OK. | + | |
| - | + | ||
| - | The toolbar should now list the three job we have configured as shown below. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | Below the list is the ' | + | |
| - | + | ||
| - | Clicking on 'Show Simulation' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | You can use the left mouse button to rotate the view and the right mouse button to drag the view. If you rotate it you will be able to see the toolpath preview showing the pocket and contour being cut with several passes at slightly different depths. | + | |
| - | + | ||
| - | To get a better view of what your part will look like you can use the checkboxes on the ' | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | We are now finished designing out part and configuring all the toolpaths. | + | |
| - | + | ||
| - | Below the Simulation section there is the 'Save Toolpaths' | + | |
| - | + | ||
| - | You can now transfer your design file, that now also includes the toolpaths, onto a USB stick and head over to the machine. | + | |
| - | + | ||
| - | ===Powering up machine=== | + | |
| - | ===Homing=== | + | |
| - | ===Clamping stock=== | + | |
| - | ===Installing bit=== | + | |
| - | ===Setting workspace coordinates and probing=== | + | |
| - | ===Loading, Checking and Running the Gcode Toolpath=== | + | |
| - | ===Cleaning Up=== | + | |
| - | + | ||
| - | ===== External links ===== | + | |
| - | === Carbide 3D video guide on using Carbide Create === | + | |
| - | https:// | + | |
| - | + | ||
| - | Video tutorials. | + | |
| - | Cut Rocket | + | |
| - | YouTube | + | |
| + | {{: | ||