1. Introduction
The MilesCraft Compact Router Sub-Base Model 1225 is designed to enhance the versatility and control of your compact or trim router. This attachment provides a larger, more stable base and ergonomic handles, making it suitable for various routing applications including edge routing, template routing, and mortise routing. It is compatible with a wide range of compact and trim routers and accepts standard 1-3/16 inch (30.2mm) diameter bushings.
2. Safety Information
Always prioritize safety when operating power tools. Read and understand all instructions before use. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Wear appropriate personal protective equipment (PPE), including safety glasses, hearing protection, and a dust mask.
- Ensure your router is unplugged or its battery removed before attaching or detaching the sub-base or making any adjustments.
- Keep your work area clean and well-lit. Cluttered or dark areas invite accidents.
- Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
- Always maintain a firm grip on the router handles during operation.
- Secure your workpiece properly to prevent movement during routing.
3. Package Contents
Verify that all items are present in your package:
- Compact Router Sub-Base (1)
- Universal Mounting Inserts (Set)
- Mounting Hardware (Screws and Washers)
- Mortise Pins (2)
- Centering Tool (1)

Image 1: The MilesCraft Compact Router Sub-Base with its included components: the clear sub-base with red comfort grip handles, two clear plastic guides, two red mortise pins, and a black centering tool.
4. Setup and Installation
Follow these steps to attach the Compact Router Sub-Base to your trim or compact router:
- Prepare Your Router: Ensure your router is unplugged or its battery is removed. Remove the existing base plate from your compact or trim router.
- Select Mounting Inserts: The Compact Router Sub-Base includes universal mounting inserts. Select the inserts that best match the screw hole pattern of your specific router model.
- Attach Sub-Base: Align the selected mounting inserts with the screw holes on your router's base. Place the MilesCraft Compact Router Sub-Base over the inserts and secure it using the provided mounting hardware (screws and washers). Ensure the sub-base is firmly attached and does not wobble.
- Center the Sub-Base: Insert the centering tool into your router's collet and tighten it. Lower the router until the tip of the centering tool passes through the central opening of the sub-base. Adjust the sub-base's position slightly if necessary to ensure the centering tool is perfectly aligned with the sub-base's center. Tighten all mounting screws securely once centered.

Image 2: The MilesCraft Compact Router Sub-Base positioned in front of several different brands and models of compact routers, demonstrating its universal compatibility.

Image 3: A Bosch compact router securely mounted onto the MilesCraft Compact Router Sub-Base, showing the attachment mechanism and the ergonomic handles.
5. Operating Instructions
The Compact Router Sub-Base enhances control and stability for various routing tasks. The 360° rotational comfort grip handles provide maximum comfort and maneuverability during operation.
5.1. Edge Routing
For stable edge routing, hold the router firmly by the comfort grip handles. The larger base provides increased surface contact with the workpiece, improving stability and control along edges. Ensure the router bit is set to the correct depth for your desired profile.

Image 4: A router equipped with the MilesCraft Compact Router Sub-Base is shown actively routing an edge on a wooden board, highlighting the stability provided by the wide base and handles.
5.2. Template Routing
The sub-base is compatible with standard 1-3/16 inch (30.2mm) diameter guide bushings, allowing you to use various templates for precise routing. Attach the appropriate guide bushing to the sub-base, then follow your template to create intricate designs or precise cutouts.

Image 5: A router with the MilesCraft Compact Router Sub-Base is used to carve letters into a wooden surface, demonstrating its application in template routing for decorative or informational purposes.
5.3. Mortise Routing
The included mortise pins are designed for cutting mortises in your workpiece. Insert the two mortise pins into the designated holes on the sub-base. These pins act as guides, allowing you to plunge and route precise mortises by referencing the edge of your material.

Image 6: A close-up view of the MilesCraft Compact Router Sub-Base with the two red mortise pins installed, positioned against a piece of wood to illustrate their function in guiding mortise cuts.

Image 7: The router with the sub-base and mortise pins is shown completing a mortise cut in a wooden workpiece, demonstrating the precision achievable with this setup.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your MilesCraft Compact Router Sub-Base.
- Cleaning: After each use, wipe down the sub-base with a clean, dry cloth to remove dust and debris. For stubborn residue, a damp cloth with mild soap can be used, followed by thorough drying.
- Inspection: Regularly inspect the sub-base for any signs of damage, cracks, or wear. Check that all mounting hardware is secure.
- Storage: Store the sub-base in a clean, dry environment away from direct sunlight and extreme temperatures.
7. Troubleshooting
If you encounter issues with your Compact Router Sub-Base, consider the following:
- Sub-Base Wobbles After Installation: Ensure all mounting screws are tightened securely. Verify that the correct universal mounting inserts were used for your router model. Some router base plate screws may require small washers for a more secure fit if their heads are too small for the sub-base slots.
- Router Bit Not Centered: Re-perform the centering procedure using the provided centering tool. Ensure the sub-base is perfectly aligned before tightening all screws.
- Difficulty with Specific Router Models: While designed for universal compatibility, some router models may require minor adjustments or additional hardware (e.g., specific screw types or washers) for optimal fit. Refer to your router's manual for its base plate specifications.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Milescraft |
| Model Number | 1225 |
| Material | Plastic |
| Item Weight | 16 ounces (1 pound) |
| Product Dimensions | 8 x 6.5 x 2 inches |
| Base Type | Sub-Base |
| Bushing Compatibility | Standard 1-3/16 inch (30.2mm) diameter bushings |
| Included Components | Sub Base, Mounting Hardware, Mortise Pins, Centering Tool |
| UPC | 737888122509 |
9. Warranty and Support
The MilesCraft Compact Router Sub-Base Model 1225 comes with a 3-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use. For warranty claims, technical support, or any questions regarding your product, please contact Milescraft customer service through their official website or the retailer where the product was purchased.
For additional information and product registration, visit the official Milescraft website: www.milescraft.com





