1. Safety Instructions
Always read and understand all safety warnings and instructions before using this product. Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
- Wear Eye Protection: Always wear appropriate eye protection (safety goggles) to protect against flying debris.
- Wear Hand Protection: Use protective gloves to prevent cuts and abrasions during handling and operation.
- Secure Workpiece: Ensure the material being cut is securely clamped or held to prevent movement during operation.
- Correct RPM: Adhere to the recommended maximum RPM for the selected cutting diameter to prevent tool damage or injury. Refer to the RPM chart on the tool.
- Check Blades: Before each use, inspect the cutting blades for damage or wear. Replace dull or damaged blades immediately.
- Dust Extraction: When possible, use a dust extraction system to minimize dust exposure, especially when cutting materials like plasterboard.
- Tool Compatibility: Ensure the hole saw is compatible with your drill or power tool.
- Keep Clear: Keep hands and body parts clear of the rotating blades during operation.

2. Product Overview
The wolfcraft Adjustable Hole Saw AH 45-130 mm (Model 5978000) is a versatile tool designed for cutting clean and precise holes in various dry construction materials. Its adjustable diameter feature eliminates the need for multiple fixed-size hole saws, making it ideal for renovation and interior work.

Key Features:
- Continuous 3-Step Adjustment: Easily loosen, synchronize adjustment, and fix the desired cutting diameter.
- Clean and Fine Cuts: Engineered for precise results in materials such as OSB, plasterboard, and soft wood.
- Integrated Scales: Features three integrated scales for quick and accurate diameter selection, including common installation dimensions.
- Dust Removal: Designed with side openings for efficient dust removal during operation.
3. Setup
3.1. Adjusting the Cutting Diameter
The wolfcraft Adjustable Hole Saw allows for continuous adjustment of the cutting diameter from 45 mm to 130 mm. Follow these steps to set the desired diameter:
- Loosen the Locking Screws: Use the provided Allen key to loosen the three locking screws on the top side of the hole saw. These screws secure the cutting blades in place.
- Adjust Blades: Turn the central mechanism to move the three cutting blades simultaneously. Observe the integrated scales on the underside of the tool to reach your desired diameter. The scales include millimeter markings and common installation dimensions (e.g., DCL, VMC, 68mm).
- Verify Diameter: Ensure all three blades are set to the same measurement for a balanced cut.
- Tighten Locking Screws: Once the desired diameter is set, firmly tighten the three locking screws using the Allen key to secure the blades.


3.2. Attaching to a Drill
The hole saw is designed to be used with a standard drill. Insert the central shaft of the hole saw into the chuck of your drill and tighten it securely. Ensure the chuck is fully tightened to prevent slippage during operation.

3.3. Video Guide: Blade Adjustment
For a visual guide on how to adjust the blades and set the diameter, please watch the official product video below:
4. Operating Instructions
Once the hole saw is properly set up and attached to your drill, you can begin cutting. Always ensure you are wearing appropriate safety gear.
- Mark the Center: Clearly mark the center point of the desired hole on your workpiece.
- Position the Pilot Drill: Place the pilot drill (central drill bit) of the hole saw on the marked center point.
- Start Slowly: Begin drilling at a low speed to allow the pilot drill to penetrate the material and stabilize the hole saw.
- Increase Speed: Once the pilot drill is firmly engaged and the cutting blades start to make contact, gradually increase the drill speed to the recommended RPM for your selected diameter (refer to the RPM chart on the tool).
- Apply Steady Pressure: Maintain steady, even pressure on the drill. Avoid excessive force, which can cause the blades to bind or damage the material.
- Clean Cuts: The design of the wolfcraft Adjustable Hole Saw ensures clean and fine cuts in suitable materials.
- Dust Management: The side openings facilitate dust removal. For best results and to minimize airborne dust, consider using a dust extraction system.
- Complete the Cut: Continue drilling until the hole is completely cut through the material.
- Remove the Core: Once the cut is complete, carefully remove the drill and the cut material core.


5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your wolfcraft Adjustable Hole Saw.
- Cleaning: After each use, clean the hole saw to remove dust and debris. Use a brush or compressed air. Avoid using harsh chemicals that could damage the plastic components.
- Blade Inspection: Regularly inspect the cutting blades for sharpness and any signs of damage (e.g., chips, bends). Dull blades can lead to poor cut quality and increased effort.
- Blade Replacement: If blades become dull or damaged, they can be replaced. Loosen the locking screws, remove the old blades, insert new ones, and then tighten the screws securely. Ensure replacement blades are genuine wolfcraft parts.
- Storage: Store the hole saw in a dry place, away from direct sunlight and extreme temperatures. Keep it in its original packaging or a suitable tool case to protect the blades.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Rough or uneven cuts | Dull or damaged blades; incorrect RPM; uneven pressure; blades not set to the same diameter. | Replace blades; adjust RPM according to chart; apply steady, even pressure; ensure blades are precisely aligned. |
| Hole saw binds or jams | Excessive pressure; incorrect RPM; material too thick or hard for the tool; debris buildup. | Reduce pressure; check RPM; ensure tool is used on recommended materials; clean the tool. |
| Hole saw wobbles during operation | Loose connection to drill; blades not securely tightened; unbalanced blade adjustment. | Securely tighten drill chuck; ensure locking screws are tight; verify all blades are set to the same diameter. |
| Difficulty adjusting diameter | Locking screws not fully loosened; debris in adjustment mechanism. | Ensure all three locking screws are sufficiently loosened; clean the adjustment mechanism. |
7. Specifications
- Brand: wolfcraft
- Model Number: 5978000
- Adjustable Diameter: 45 - 130 mm
- Blade Material: High-Speed Steel (Acero rápido)
- Handle Material: Plastic (Plástico)
- Number of Blades: 3
- Recommended Surface: Wood, OSB, Plasterboard (Madera, OSB, paneles de yeso)
- Power Source: Manual (for drill attachment)
- Product Dimensions (L x W x H): 20 x 2.8 x 7.5 cm
- Max. RPM (45-65 mm): 1,200 - 1,500 RPM
- Max. RPM (66-100 mm): 1,000 - 1,200 RPM
- Max. RPM (>100 mm): 800 - 1,000 RPM
- Country of Origin: China
8. Warranty & Support
For warranty information and customer support, please refer to the manufacturer's official website or contact your local wolfcraft dealer. While the product type of warranty is listed as "Lifetime", the description states "No warranty." Please refer to the manufacturer's official warranty policy for the most accurate and up-to-date information regarding coverage and terms.
You can find more information and contact details on the official wolfcraft website: www.wolfcraft.com





