A table saw sacrificial fence is a crucial accessory for woodworkers seeking precision and safety. This removable attachment protects the main fence while allowing for specialized cuts. Made from materials like MDF or plywood, it’s easily installed using clamps and can be adjusted for various cutting needs. This guide explores the installation, adjustment, materials, and key features of table saw sacrificial fences to enhance your woodworking projects.
What is a Table Saw Sacrificial Fence?
A table saw sacrificial fence is an auxiliary fence attached to the main fence of a table saw. It serves several purposes:
- Protects the main fence from damage during certain cuts
- Allows for specialized cuts like dadoes and rabbets
- Provides a disposable surface that can be cut into without concern
This accessory is essential for woodworkers who need to make precise cuts while preserving their main fence.
How to Install a Table Saw Sacrificial Fence?
Installing a table saw sacrificial fence is a straightforward process. Here’s a step-by-step guide:
- Gather materials:
- 3/4\” MDF or plywood
- Clamps (dovetail or F-style)
- Router table (if using dovetail clamps)
- Drill and countersink bits
- Screws
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Measuring tape and square
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Cut the MDF or plywood to match the height and length of your factory fence.
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If using dovetail clamps:
- Route dovetail grooves 3/8\” deep near each end of the MDF
- Place the MDF against the factory fence with grooves facing away from the blade
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Secure using dovetail clamps
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If using F-style clamps:
- Cut two identical pieces of MDF
- Create hardwood spacer blocks
- Sandwich spacers between MDF pieces and fasten with screws
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Attach to factory fence using F-style clamps
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Adjust the fence so the leading edge just covers the blade
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Raise the blade slowly to the desired height
What are the Best Materials for a Table Saw Sacrificial Fence?
Choosing the right material for your sacrificial fence is crucial. Here’s a comparison of common options:
| Material | Pros | Cons |
|---|---|---|
| MDF | Smooth surface, dense, affordable | Can wear out over time |
| Plywood | Smooth surface, readily available | May not be as dense as MDF |
| Hardwood | Durable, long-lasting | More expensive, heavier |
MDF (Medium-Density Fiberboard) is often the preferred choice due to its smooth surface and affordability. However, plywood can also be a good option, especially if you have some on hand.
How to Adjust a Table Saw Sacrificial Fence for Precise Cuts?
Proper adjustment of your sacrificial fence is key to achieving precise cuts. Follow these steps:
- Lower the blade below the table surface
- Slowly raise the blade until it just touches or is slightly above the sacrificial fence
- Align the leading edge of the sacrificial fence to barely cover the blade
- Ensure the blade exposure matches the width of your desired cut
- Check that all stock is of uniform thickness for consistent cuts
- Position clamps to avoid interference with the blade or workpiece
Remember to always prioritize safety when making adjustments to your table saw setup.
What are the Essential Features of a Table Saw Sacrificial Fence?
A well-designed sacrificial fence should have the following features:
- Secure locking mechanism (e.g., dovetail or F-style clamps)
- Easy attachment and detachment for quick replacement
- Compatibility with various table saw models
- Sufficient length to cover the base fence
- Smooth surface to prevent catch points
- Durability to withstand multiple cuts before replacement
These features ensure that your sacrificial fence enhances both the precision and safety of your woodworking projects.
How to Maintain and Replace a Table Saw Sacrificial Fence?
Proper maintenance and timely replacement of your sacrificial fence are crucial for optimal performance:
- Regularly inspect the fence for wear and tear
- Clean the fence surface after each use to remove sawdust and debris
- Replace the fence when it shows signs of significant wear or damage
- Keep spare materials on hand for quick replacements
- Consider making multiple fences at once to have backups ready
By following these maintenance practices, you can ensure that your sacrificial fence always provides the protection and precision you need for your woodworking projects.
What Safety Precautions Should Be Taken When Using a Sacrificial Fence?
Safety should always be the top priority when working with power tools. Here are some essential safety precautions for using a sacrificial fence:
- Always wear appropriate personal protective equipment (PPE), including safety glasses and hearing protection
- Ensure the fence is securely attached before starting any cuts
- Never force the workpiece through the cut; let the saw do the work
- Use push sticks or push blocks to keep your hands away from the blade
- Disconnect power to the saw when making any adjustments to the fence
- Be aware of kickback potential and position yourself accordingly
- Regularly check the alignment of the fence to ensure it’s parallel to the blade
By following these safety guidelines, you can minimize the risk of accidents and injuries while using your table saw with a sacrificial fence.
References:
1. https://www.youtube.com/watch?v=eyhIkrg21X0
2. https://www.finewoodworking.com/forum/auxiliary-table-saw-fence
3. https://www.finewoodworking.com/2012/05/03/how-to-make-a-sacrificial-rip-fence-that-never-wears-out
4. https://www.woodworkingtalk.com/threads/adding-sacrificial-straight-surface-to-table-saw-fence-what-and-how.204505/