Welding Symbols In Solidworks – Create Professional Fabrication
To add welding symbols in SolidWorks, go to the Annotation tab in your drawing and select the Weld Symbol tool. You can then customize the symbol’s properties, including weld type, size, and side, by using the property manager that appears on the left.
For automated symbols, use the Model Items tool to pull weld bead information directly from your 3D weldment parts into your 2D production drawings.
Creating a project in the garage often starts with a rough sketch on a napkin, but moving to a professional 3D design changes the game. If you have ever felt overwhelmed by the technical side of fabrication drawings, you are not alone.
Learning how to use welding symbols in solidworks is the bridge between a simple 3D model and a finished metal project that actually fits together. This skill allows you to communicate exactly where the heat needs to go without ever leaving your computer desk.
In this guide, we will walk through the process of adding, customizing, and managing these symbols so your next welding project is as precise as a factory-built machine. We will cover everything from basic fillet welds to complex groove symbols used in heavy-duty metalworking.
Welding symbols in solidworks: A Step-by-Step Implementation Guide
Adding annotations to a drawing is one of the final steps in the design process, but it is arguably the most important for a welder. To begin, open your 2D drawing file in SolidWorks and navigate to the Annotation toolbar located at the top of your screen.
Click on the Weld Symbol icon, which usually looks like a standard fillet weld symbol. Once the tool is active, click on the edge or the joint where the weld will be placed. A preview of the symbol will appear, and the Weld Symbol Property Manager will open on the left side of the interface.
Inside this manager, you can toggle between the Arrow Side and the Other Side. This is critical for accuracy in fabrication. If the weld needs to be on the side the arrow points to, use the bottom section of the symbol settings. If it belongs on the opposite side, use the top section.
Selecting the Correct Weld Type
SolidWorks provides a library of standard symbols including fillet, V-groove, bevel, and square welds. Choosing the right one depends on the thickness of your material and the structural requirements of the project. For most DIY garage projects, the fillet weld is the most common selection.
When you click the symbol button in the property manager, a grid of icons appears. Hovering over these will give you the name of each weld type. Select the one that matches your joint design, such as a butt joint or a T-joint, to ensure the symbol communicates the right intent to the person under the hood.
Adding Dimensions and Pitch
A symbol without dimensions is just a suggestion. In the property manager, you can enter the size of the weld leg in the Size box. For a 1/4-inch fillet weld, you would simply type “1/4” or the decimal equivalent.
If you are performing stitch welding (intermittent welds), you will need to enter the length of each weld segment and the pitch (the distance between the centers of the welds). SolidWorks will automatically format this as “Length-Pitch” on the reference line, following standard AWS or ISO conventions.
Understanding the Anatomy of a Digital Weld Symbol
To master welding symbols in solidworks, you must understand the three main parts of the symbol: the arrow, the reference line, and the tail. The arrow points to the joint, the reference line carries the instructions, and the tail is for supplementary information.
The reference line is the horizontal bar where all the magic happens. Information placed below the line refers to the “Arrow Side,” while information above the line refers to the “Other Side.” If you see symbols on both sides, it means you need a double weld, such as a double-fillet on a T-joint.
The tail is often left off in simple drawings, but it is useful for specifying the welding process. For example, if you want a specific joint to be TIG welded (GMAW), you can type that abbreviation into the tail field in the property manager. This ensures the mechanical properties of the finished piece meet your expectations.
The “All Around” and “Field Weld” Icons
Two small icons can change the entire scope of your project. The All Around symbol is a small circle placed at the intersection of the arrow and the reference line. This tells the fabricator to weld the entire perimeter of the joint, which is common for tubing or circular plates.
The Field Weld symbol is a small flag. This indicates that the weld should not be done in the shop, but rather at the installation site. For a hobbyist, this might mean welding a bracket onto a vehicle frame after the main assembly is bolted in place to ensure perfect alignment.
Customizing Your Symbol Library for Faster Workflow
If you find yourself using the same welding symbols in solidworks repeatedly, you can save them as favorites. This is a huge time-saver for repetitive tasks like building workbenches or trailer frames. In the property manager, look for the Style section at the top.
Click the Add or Update Style button (the star icon) to save your current symbol configuration. You can name it something like “Standard 3/16 Fillet” or “Heavy Duty V-Groove.” The next time you need that specific symbol, you can select it from a dropdown menu instead of re-entering the dimensions.
You should also ensure your document is set to the correct standard. Go to Options > Document Properties > Detailing and check if you are using ANSI or ISO. ANSI is standard in the United States, while ISO is common in Europe. Switching this setting will change how the symbols are drawn and where the dimensions are placed.
Using Layers for Better Visibility
In complex drawings, symbols can start to clutter the view. A pro tip is to place your welding symbols in solidworks on a dedicated layer. You can color-code this layer (perhaps a bright blue or red) so the welding instructions stand out from the black lines of the part geometry.
By using layers, you can also toggle the visibility of the symbols. If you need to print a version of the drawing just for material cutting, you can hide the welding layer. When it is time for assembly, you can turn the layer back on to guide the fabrication process.
Automating Symbols with 3D Weld Beads
One of the most powerful features in SolidWorks is the ability to generate symbols automatically from your 3D model. If you use the Weldments tab to create your parts, you can add Weld Beads directly to the 3D geometry. This doesn’t just look cool; it stores metadata.
When you create the 2D drawing of that part, you can use the Model Items tool. Select the “Weld Symbols” option, and SolidWorks will pull the data from the 3D bead and place the symbol on the drawing for you. This reduces the risk of human error and ensures the drawing matches the model perfectly.
If you change the size of the weld in the 3D model later, the symbol in the drawing will automatically update. This parametric relationship is why SolidWorks is a favorite for professional engineers and serious DIYers alike. It keeps your documentation in sync with your design changes.
Managing Weld Tables
For large projects like a utility trailer, a drawing can become messy with dozens of symbols. Instead of crowding the views, you can insert a Weld Table. This table acts like a Bill of Materials (BOM) but for your welds.
The table will list every weld, its type, size, and even the calculated mass of the weld filler material. This is incredibly helpful for estimating how many rolls of welding wire or boxes of electrodes you need to buy at the local supply shop before you start the build.
Common Pitfalls and Best Practices
Even experts make mistakes when placing welding symbols in solidworks. One common error is “Over-Defining” the weld. If you provide a symbol that contradicts the 3D model or the notes section, it creates confusion. Always double-check that your symbol matches the physical space available for the weld.
Another pitfall is ignoring clearance. A symbol might call for a large fillet weld in a tight corner where a welding torch cannot physically reach. When placing your symbols, visualize the welding gun or electrode. If you can’t get the tool in there, you need to change the joint design or the symbol.
- Keep it simple: Don’t add a tail or extra notes unless they add necessary value.
- Check your scale: If your symbols look like giant blocks or tiny dots, adjust the annotation scale in the document properties.
- Use the “Jog” feature: If a symbol is overlapping a dimension, right-click the leader line and select Add Jog to move the symbol to a clear area without moving the arrow.
The Importance of Safety Notes
While SolidWorks handles the geometry, it doesn’t handle safety. If your project involves galvanized steel or critical structural members, use the tail of the symbol or a separate drawing note to specify safety protocols like “Remove galvanization before welding” or “Pre-heat to 400 degrees.”
Communicating these thermal requirements is just as important as the weld size itself. A perfectly sized weld can still fail if the base metal wasn’t prepared correctly. Use the software to be as descriptive as possible to ensure a safe and durable final product.
Frequently Asked Questions About Welding Symbols in SolidWorks
How do I change the size of the weld symbol font?
You can change the font size by going to Tools > Options > Document Properties > Annotations > Weld Symbols. Uncheck the “Use document font” box and click the Font button to set a custom size or style that is easier to read on your shop prints.
Can I add custom symbols that aren’t in the standard library?
Yes, SolidWorks allows you to create custom blocks. If you have a very specific proprietary weld or a non-standard process, you can draw the symbol manually, save it as a block, and then insert it into your drawings as needed. However, sticking to industry standards is usually better for clarity.
Why is my weld symbol arrow not pointing where I want?
This usually happens because the leader attachment is set to “Nearest” instead of “Defined.” You can click and drag the attachment point (the dot at the end of the arrow) to any edge. If it keeps snapping to the wrong place, hold the Ctrl key while dragging to disable the automatic snapping feature.
Does SolidWorks calculate the strength of the weld based on the symbol?
The symbol itself is just an annotation. To calculate strength, you must use SolidWorks Simulation. In the simulation environment, you can define “Edge Welds” or “Spot Welds” and the software will tell you if the weld size you’ve chosen will withstand the applied loads.
Mastering Your Metalwork Documentation
Taking the time to properly implement welding symbols in solidworks transforms your garage projects from “good enough” to “professional grade.” It forces you to think through every joint, every bead, and every structural connection before you ever strike an arc. This level of planning saves time, reduces scrap metal, and results in a much stronger finished product.
As you continue to build your skills, remember that the software is a tool, but your fabrication knowledge is the driver. Use these digital symbols to document your expertise, and don’t be afraid to experiment with different joint configurations in the 3D space. Whether you are building a custom off-road bumper or a simple garden gate, clear communication is the key to success.
Now, fire up your workstation, open that latest assembly, and start detailing. Your future self—the one standing at the welding table with a grinder in hand—will thank you for the clarity and precision of a well-documented drawing. Happy fabricating!
