Patent Notice: This product is protected by one or more patents in certain jurisdictions.
COMPASS MG-36Pro has 11 Positive Stops: Ā±60Ā°, Ā±45Ā°, Ā±30Ā°, Ā±22.5Ā°, Ā±15Ā° and 0Ā°.
The standard heavy-duty, black anodized crosscutting fence of the MG-36Pro is a CNC milled extrusion of 6061-T6 aluminum. It is the base for the micro-adjustable flip stop.
The MG-36Pro Flip Stop Assembly slides in a groove on top of the fence and can be locked anywhere you choose.
An elbow joint has been added to the flip stop, allowing for adjustment of the flip stop's position when installing a sub fence,ensuring a gap-free fit between the flip stop and the sub fence.
For stock without square faces to the table, you can index on the bevel utilizing the Brass Locating Pin.
Once locked in place, you can make micro adjustments in 0.001" (0.02mm) increments. All graduations are laser etched.Through a redesign, the locking knob on the Flip Stop Assembly has been strategically placed at the center of the entire assembly, greatly boosting the overall stability of the assembly while making adjustments.
The Compass MG-36Pro is designed with longevity in mind. All parts are CNC machined, all aluminum parts are anodized and theremaining components are either made from stainless steel or brass.
Patent Notice: This product is protected by one or more patents in certain jurisdictions.
"Some images on this page are computer-generated representations of the product and may differ from the actual product. Colors, textures, and other details may not be accurately represented in the images. Please refer to the product description and specifications for more information."
System Overview:
Brand: Harvey Woodworking
Product Line: COMPASS Precision Measurement System
Model: MG-36Pro Miter Gauge
Type: Professional-grade telescoping miter gauge with micro-adjustment capability
Application: Precision crosscuts, miters, compound angles, and repetitive cutting operations on table saws and other stationary tools
Available Versions:
ā¢ Scale Graduations: 1/32" increments
ā¢ Angle Precision: 0.1Ā° adjustment capability
ā¢ Scale Graduations: 1mm increments
ā¢ Angle Precision: 0.1Ā° adjustment capability
Product Features and Benefits:
ā¢ Precision Angle System Micro-Adjustment Mechanism providing infinite angle settings between positive stops
ā¢ Positive Stop System with detents at 0Ā°, 15Ā°, 22.5Ā°, 30Ā°, 45Ā°, and 60Ā° for both left and right (11 total positions)
ā¢ Large Diameter Protractor Scale for easy angle reading and precise positioning
ā¢ Heavy-Duty Locking Handle securing angles firmly during cutting operations
ā¢ Laser-Etched Angle Markings that won't wear off over time
ā¢ Telescoping Fence System 36-Inch Maximum Extension accommodating large panel and board work
ā¢ Reversible Fence Design allowing left or right-side mounting configurations
ā¢ Dual Flip Stop System with independent positioning for repeatable cut lengths
ā¢ Laser-Etched Linear Scale providing accurate measurement references
ā¢ Sacrificial Fence Face protecting aluminum extrusion and providing zero-clearance support
ā¢ Quick-Release Mechanism for rapid fence length adjustments
ā¢ Guide Bar Excellence Adjustable Expansion System eliminating side-to-side play in miter slots
ā¢ Three-Point Contact Design ensuring parallel alignment to blade
ā¢ Hardened Steel Construction providing long-term durability and wear resistance
ā¢ Universal Compatibility fitting 3/4" x 3/8" standard miter slots
ā¢ Tool-Free Adjustment allowing quick setup on multiple machines
ā¢ Construction Quality Aircraft-Grade Aluminum Extrusion for main body and fence components
ā¢ Anodized Finish providing superior corrosion resistance and smooth operation
ā¢ CNC-Machined Components ensuring tight tolerances and precise fit
ā¢ Stainless Steel Hardware throughout for rust-free longevity
ā¢ Brass Adjustment Mechanisms offering smooth, precise micro-adjustments
ā¢ Operational Advantages Smooth Glide Action through precision-machined surfaces
ā¢ Zero-Play Design eliminating movement during cutting operations
ā¢ Ergonomic Locking Handles positioned for comfortable, secure operation
ā¢ Clear Angle Indicators visible from normal working position
ā¢ Repeatable Accuracy through positive stop system and flip stop gauges
Technical Specifications
ā¢ Model: MG-36Pro Imperial
ā¢ Measurement System: Imperial (inches and degrees)
ā¢ Fence Size (L x W x H): 21-5/8" x 1-3/8" x 2-1/2" (550 x 35 x 66.5 mm)
ā¢ Maximum Crosscut Capacity: 36" (915mm)
ā¢ Miter Bar Size (L x W x H): 22" x 3/4" x 3/8" (560 x 19 x 9mm)
ā¢ Angle Range: -60Ā° to +60Ā° (120Ā° total range)
ā¢ Angle Precision: 0.1Ā° dial cursor resolution
ā¢ Positive Stops: 0Ā°, Ā±15Ā°, Ā±22.5Ā°, Ā±30Ā°, Ā±45Ā°, Ā±60Ā° (11 detent positions total)
ā¢ Micro-adjustment Accuracy: 0.001" per grid increment, 1/20" per full turn Flip
ā¢ Stop Micro-Adjustment: Ā±3mm (Ā±1/8") adjustment range Standard T-Slot
ā¢ Top Width: 3/4" (19.05mm)
ā¢ Bottom Width: 1" (25.4mm)
ā¢ Depth: 3/8" (9.525mm)
ā¢ Body Material: Anodized aircraft-grade aluminum extrusion
ā¢ Hardened steel Hardware: Stainless steel and brass components
ā¢ Net Weight: 7.6 lbs (3.45kg)
ā¢ Gross Weight: 11.6 lbs (5.27kg)
ā¢ Package Dimensions: Not specified in manual
ā¢ Model: MG-36Pro Metric
ā¢ Measurement System: Metric (millimeters and degrees)
ā¢ Fence Size (L x W x H): 550mm x 35mm x 66.5mm (21-5/8" x 1-3/8" x 2-1/2")
ā¢ Maximum Crosscut Capacity: 915mm (36")
ā¢ Miter Bar Size (L x W x H): 560mm x 19mm x 9mm (22" x 3/4" x 3/8")
ā¢ Angle Range: -60Ā° to +60Ā° (120Ā° total range)
ā¢ Angle Precision: 0.1Ā° dial cursor resolution
ā¢ Positive Stops: 0Ā°, Ā±15Ā°, Ā±22.5Ā°, Ā±30Ā°, Ā±45Ā°, Ā±60Ā° (11 detent positions total)
ā¢ Micro-adjustment Accuracy: 0.02mm per grid increment, 1mm per full turn Flip
ā¢Stop Micro-Adjustment: Ā±3mm (Ā±1/8") adjustment range Standard T-Slot
ā¢ Top Width: 19.05mm (3/4")
ā¢ Bottom Width: 25.4mm (1")
ā¢ Depth: 9.525mm (3/8")
ā¢ Body Material: Anodized aircraft-grade aluminum extrusion
ā¢ Hardened steel Hardware: Stainless steel and brass components
ā¢ Net Weight: 3.45kg (7.6 lbs)
ā¢ Gross Weight: 5.27kg (11.6 lbs)
ā¢ Package Dimensions: Not specified in manual
Installation Requirements
ā¢ Guide Bar Adjustment: Expand guide bar using adjustment screws to eliminate play in miter slot
ā¢ Slot Compatibility Verification: Confirm 3/4" x 3/8" miter slot dimensions
ā¢ Parallelism Check: Verify guide bar runs parallel to saw blade using precision square
ā¢ Locking Mechanism Test: Confirm secure angle locking at all positive stop positions
ā¢ Assembly Time: 15-30 minutes for complete setup and calibration
ā¢ Telescoping Extension: Adjust fence length to accommodate workpiece dimensions
ā¢ Flip Stop Installation: Mount dual flip stops on fence rail system
ā¢ Scale Calibration: Zero linear scale to blade position for accurate cut measurements
ā¢ Fence Orientation: Configure for left or right-side operation as needed
ā¢ Universal Miter Slot Fit: Standard 3/4" x 3/8" miter slots on table saws
ā¢ Band Saw Compatibility: Works with band saws having standard miter slot
ā¢ Disc Sander Compatibility: Adapts to stationary disc sanders with miter slots
ā¢ Router Table Compatibility: Functions with router tables featuring T-slot or miter slot systems
ā¢ Jointer Compatibility: Can be used on jointers with appropriate miter slot configuration
ā¢ Minimum Table Length: 24" for effective miter gauge operation
ā¢ Miter Slot Depth: Minimum 3/8" (9.525mm) depth required
ā¢ Table Surface: Flat, smooth surface for optimal sliding performance
ā¢ Clearance Requirements: Adequate space for 36" fence extension when telescoped
Safety Features and Requirements:
ā¢ Secure Locking System preventing angle movement during cutting operations
ā¢ Anti-Slip Fence Face providing firm workpiece contact
ā¢ Guard Clearance Design allowing proper blade guard positioning
ā¢ Positive Stop Detents preventing accidental angle changes
ā¢ Smooth Sliding Action eliminating binding or sudden releases
ā¢ Two-Hand Operation: One hand controlling miter gauge, one hand supporting workpiece
ā¢ Proper Workpiece Support: Ensure full contact between workpiece and fence face
ā¢ Blade Guard Use: Maintain blade guard in position whenever possible
ā¢ Push Through Completion: Complete cuts fully past blade before releasing workpiece
ā¢ Small Stock Handling: Use auxiliary fences or clamping systems for pieces shorter than 6"
ā¢ Blade Height Setting: Keep blade height 1/4" above workpiece thickness
ā¢ Feed Direction: Always feed workpiece against blade rotation
ā¢ Test Cuts: Verify angle accuracy with scrap material before final cuts
ā¢ Secure Clamping: Use hold-down clamps for irregular or small workpieces
ā¢ Clear Debris: Keep miter slot free from sawdust and debris buildup
Maintenance Schedule:
ā¢ Dust Removal: Clean miter slot and guide bar surfaces
ā¢ Surface Inspection: Check for damage or unusual wear
ā¢ Hardware Check: Verify all knobs and handles are secure
ā¢ Storage: Return to protected location to prevent damage
ā¢ Guide Bar Lubrication: Apply dry lubricant to guide bar surfaces
ā¢ Slot Cleaning: Thoroughly clean miter slot of accumulated sawdust
ā¢ Angle Accuracy Check: Verify positive stop accuracy with precision square
ā¢ Flip Stop Inspection: Ensure smooth operation and secure locking
ā¢ Comprehensive Inspection: Check all adjustment mechanisms for proper function
ā¢ Hardware Tightening: Verify all fasteners are properly tightened
ā¢ Accuracy Calibration: Recalibrate angle and linear scales if needed
ā¢ Lubrication Service: Apply appropriate lubricant to moving parts
ā¢ Professional Calibration: Consider professional accuracy verification
ā¢ Component Replacement: Replace sacrificial fence face if damaged or worn
ā¢ Complete Disassembly Cleaning: Deep clean all components and reassemble
ā¢ Accuracy Documentation: Record baseline measurements for future reference
ā¢ Standard Crosscutting: 90Ā° Square Cuts: Accurate crosscuts using positive stop at 0Ā°
ā¢ Repetitive Length Cuts: Utilize flip stops for identical part production
ā¢ Wide Panel Crosscuts: Extend fence to full 36" for large workpiece support
ā¢ Narrow Stock Crosscuts: Collapse fence for compact cutting operations
ā¢ Miter Cutting: 45Ā°
ā¢ Picture Frame Miters: Use positive stop detents for frame corners
ā¢ Compound Miter Cuts: Combine miter gauge angle with blade tilt
ā¢ Crown Molding Angles: Achieve precise crown molding compound cuts
ā¢ Custom Angle Cuts: Micro-adjust between positive stops for exact angles
ā¢ Dado Operations: Cut accurate dadoes with repetitive positioning
ā¢ Tenon Cheek Cutting: Create precise tenon shoulders with flip stops
ā¢ Small Parts Production: Manufacture multiple identical small components
ā¢ Angled Dadoes: Combine angle settings with dado blade for joinery
ā¢ Box Joints: Use flip stops for precise finger joint spacing
ā¢ Segmented Turning: Cut accurate segments for bowl and vessel turning
ā¢ Geometric Inlays: Achieve precise angles for marquetry and inlay work
ā¢ Trim and Molding: Professional-quality interior trim cutting
Frequently Asked Questions:
The Harvey COMPASS MG-36Pro is available in two measurement system options:
ā¢ Imperial (MG-36Pro Imperial): Features fractional inch markings with 1/32" graduation increments, ideal for woodworkers using imperial measurements
ā¢ Metric (MG-36Pro Metric): Features millimeter markings with 1mm graduation increments, perfect for those working in metric systems
Both versions are identical in construction, features, and adjustment capabilities, differing only in the measurement scale markings. Choose based on your preferred measurement system and existing shop tools.
The Harvey COMPASS MG-36Pro is designed for universal compatibility with standard 3/4" x 3/8" miter slots found on most table saws. The expandable guide bar system adjusts to eliminate play while maintaining smooth operation.
Compatible table saw brands include:
ā¢ Harvey Alpha and Ambassador series table saws
ā¢ SawStop cabinet and contractor saws
ā¢ Powermatic cabinet saws
ā¢ Delta Unisaw and contractor models
ā¢ Jet cabinet saws
ā¢ Grizzly cabinet saws
ā¢ Shop Fox table saws
ā¢ Most contractor and cabinet saw brands with standard miter slots
Yes, the Harvey COMPASS MG-36Pro works with any machine featuring standard 3/4" x 3/8" miter slots, including:
ā¢ Band saws for precision angled cuts
ā¢ Stationary disc sanders for accurate edge work
ā¢ Router tables for miter-guided routing operations
ā¢ Jointers with miter slot systems
ā¢ Horizontal boring machines requiring angular positioning
The Harvey COMPASS MG-36Pro offers significant advantages over standard factory-supplied miter gauges:
ā¢ 36" telescoping fence vs. typical 12-18" fixed fences
ā¢ Micro-adjustment mechanism for infinite angle settings vs. basic angle adjustment
ā¢ Dual flip stops for repeatable cuts vs. no stop system
ā¢ Positive stop detents at 16 angle positions vs. limited or no positive stops
ā¢ Zero-play guide bar system vs. loose-fitting standard bars
ā¢ Laser-etched scales that don't wear off vs. printed scales
ā¢ Aircraft-grade aluminum construction vs. cast aluminum or stamped steel
ā¢ Anodized finish for long-term durability vs. painted or basic finishes
The Harvey COMPASS MG-36Pro features an adjustable expansion system in the guide bar:
1. Insert the miter gauge into your machine's miter slot
2. Locate the expansion adjustment screws on the guide bar (typically on the side)
3. Turn the adjustment screws clockwise to expand the guide bar
4. Test for smooth sliding with no lateral play
5. Adjust until the bar slides smoothly with zero side-to-side movement
6. Lock the adjustment screws once optimal fit is achieved The three-point contact design ensures the guide bar remains parallel to your blade even with expansion adjustments.
Follow these calibration steps for perfect square cuts:
1. Set the miter gauge to the 0Ā° positive stop position
2. Lock the angle adjustment handle firmly
3. Place a precision machinist's square against the fence face
4. Position the square perpendicular to the blade or cutting edge
5. Check for gaps between square and fence at both top and bottom
6. If adjustment is needed, loosen the calibration screws on the protractor assembly
7. Rotate the fence until perfectly square with blade
8. Retighten calibration screws
9. Verify with test cuts on scrap material
10. Repeat for other positive stop angles if precise calibration is required
The dual flip stop system provides accurate, repeatable cut lengths:
1. Extend the telescoping fence to desired length
2. Position the workpiece against the fence with the end at the blade
3. Slide the first flip stop along the fence scale to the desired cut length measurement
4. Lock the flip stop in position using the locking knob
5. Make your cut with the workpiece butted against the stop
6. For multiple lengths, position the second flip stop at a different measurement
7. Flip between stops as needed for production cutting
8. The laser-etched scale provides accuracy to 1/32" (Imperial) or 1mm (Metric)
The Harvey COMPASS MG-36Pro excels at various cutting operations:
ā¢ Crosscutting: Use the extended fence for maximum workpiece support, especially on wide panels. The positive stop at 0Ā° ensures perfectly square cuts.
ā¢ Miter Cutting: Utilize positive stops at 22.5Ā°, 30Ā°, and 45Ā° for common frame and trim angles. The micro-adjustment allows fine-tuning between detent positions.
ā¢ Repetitive Cuts: Set flip stops for multiple identical pieces. This technique is invaluable for frame components, trim pieces, or any production cutting.
ā¢ Compound Angles: Combine miter gauge angle with blade tilt for crown molding and compound miter applications. Mark angle combinations on scrap for future reference.
ā¢ Small Part Production: Use the flip stops with short fence settings for manufacturing multiple small components with consistent dimensions.
Several techniques minimize tear-out with the Harvey COMPASS MG-36Pro:
1. Zero-Clearance Support: Replace the sacrificial fence face with a fresh piece to create zero-clearance backing
2. Score Line: Make a shallow scoring cut before full-depth cutting
3. Backup Board: Clamp a sacrificial board behind the workpiece for exit support
4. Sharp Blade: Use a high-tooth-count blade with sharp carbide teeth
5. Feed Rate: Maintain steady, moderate feed rateānot too fast or slow
6. Blade Height: Set blade just 1/4" above workpiece thickness
7. Grain Direction: Consider grain orientation and cut from good face up
Yes, with proper technique and accessories:
ā¢ Use auxiliary fences or clamping systems for pieces shorter than 6"
ā¢ Employ toggle clamps to secure small workpieces to the fence
ā¢ Build a sled attachment for the miter gauge for enhanced small part support
ā¢ Always keep hands at least 6" from the blade
ā¢ Consider using push sticks or push blocks for pieces near the blade
ā¢ Never release the workpiece until it fully clears the blade Small parts demand extra attention to safety and should never be hand-held directly against the fence without additional support or clamping.
Regular maintenance ensures optimal performance:
ā¢ Daily: Remove sawdust from miter slot and guide bar surfaces using compressed air or brush. Wipe surfaces with clean cloth.
ā¢ Weekly: Apply dry lubricant (PTFE spray or graphite powder) to guide bar surfaces. Avoid oil-based lubricants that attract sawdust.
ā¢ Monthly: Disassemble guide bar mechanism and clean thoroughly. Inspect for wear or damage. Relubricate moving parts.
The anodized aluminum and chrome-plated steel surfaces resist corrosion and wear, but regular cleaning prevents buildup that affects performance.
If you notice the angle slipping during cuts:
1. Stop using the miter gauge immediately for safety
2. Locate the locking mechanism hardware
3. Check if the locking handle is properly tightened
4. Inspect the lock washer and ensure it's not worn
5. Tighten any accessible adjustment screws
6. If looseness persists, contact Harvey Woodworking support for replacement parts
7. Never continue using a miter gauge with a compromised locking system
The locking mechanism is critical for safety and accuracy. Any looseness should be addressed immediately before resuming operation.
Yes, the Harvey COMPASS MG-36Pro uses replaceable MDF fence faces:
1. Remove the locking knobs securing the current fence face
2. Slide the fence face out of the mounting system
3. Cut replacement MDF to match dimensions (approximately 18" x 3" x 1/2")
4. Sand replacement face smooth
5. Reinstall in fence mounting system and secure with knobs
6. Recalibrate for 90Ā° accuracy after replacement
Replaceable fence faces allow you to create zero-clearance configurations and replace damaged faces without affecting the gauge's overall accuracy.
The Harvey COMPASS MG-36Pro competes with premium brands while offering excellent value:
ā¢ vs. Incra Miter Gauges: Similar precision capability at a lower price point. The Harvey offers 36" fence length comparable to Incra's V27 and V120 models.
ā¢ vs. Woodhaven Precision: The Harvey provides similar build quality with more extensive positive stop detents and better micro-adjustment mechanisms.
ā¢ vs. Rockler Pro: Harvey COMPASS offers superior fence length (36" vs. 24") and better guide bar adjustment system.
ā¢ vs. Kreg KMS7102: Comparable features with Harvey's advantage in fence extension length and anodized finish quality.
The Harvey COMPASS MG-36Pro delivers professional-grade performance at a competitive price, making it an excellent choice for serious woodworkers seeking precision without extreme cost.
No, choose one based on your primary measurement system:
ā¢ If you work exclusively in inches and fractions, choose Imperial
ā¢ If you work in millimeters and metric measurements, choose Metric
ā¢ Both versions provide identical functionality and precision
ā¢ Both work with the same machines and accessories
ā¢ The scale markings are the only difference between versions
Most woodworkers find a single measurement system sufficient for all work. If you regularly switch between systems, consider which you use most frequently for precision work.
While the Harvey COMPASS MG-36Pro is a complete system, these accessories enhance functionality:
ā¢ Extra sacrificial fence faces (MDF stock) for zero-clearance cutting
ā¢ Toggle clamps for securing small workpieces to the fence
ā¢ Stop block systems for production cutting beyond the flip stop range
ā¢ Auxiliary fences for specific cutting operations
ā¢ Digital angle finders for verification and compound angle calculations
ā¢ Hold-down clamps for irregular workpiece shapes
The basic system includes everything needed for most operations, but these accessories expand capabilities for specialized work.
The Harvey COMPASS MG-36Pro is covered by Harvey Woodworking's limited one-year warranty from the date of purchase. The warranty covers defects in material and craftsmanship. All warranty claims, repairs, and replacements should be serviced by Harvey or an authorized Harvey service professional. Defective parts will be repaired or replaced by Harvey at no additional charge.
The warranty does NOT cover:
ā¢ Normal wear, tear, and consumable parts
ā¢ Abuse, misuse, or neglect of the product
ā¢ Lack of proper care and maintenance
ā¢ Use of non-genuine Harvey parts and/or components
ā¢ Unauthorized repairs, alterations or modifications
ā¢ Any force majeure, fire or explosion
Proof of purchase is required for warranty claims. Contact Harvey Woodworking support for warranty service or technical assistance at 888-211-0397 or info@harveywoodworking.com.
Harvey Woodworking provides comprehensive parts and support:
ā¢ Online parts ordering through Harvey Woodworking website
ā¢ Technical support via phone: 888-211-0397
ā¢ Email support: info@harveywoodworking.com
ā¢ Knowledge base and support ticket system available online
ā¢ Authorized dealers can also facilitate parts ordering and support
Common replacement parts include sacrificial fence faces, flip stops, locking knobs, and guide bar components.
