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Plunge Base
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Popular Woodworking’s Best New Tool 2006!
 "Swiss-watch precision and smooth operation are combined in a package that is easier to compare to a fine German sports car than to other woodworking tools.”  -Robert Lang, Popular Woodworking, April 2006   

Note: Starting Oct.1, 2012 our Plunge Base Dust Hood kits  will be provided as an optional accessory and may be purchased seperately if desired.

These tools are custom made in our shop in small production runs to guarantee their high quality; delivery times can potentially vary from 1-4 weeks after the order is placed. If this is of concern please call us at 1-800-480-6427.

Please don't forget your Plunge Base Mounting Bar to fit your Edge-Guide if you have one! Click here!

For years, customers have been telling us that they wish there was a 'Micro Fence'-type control for the vertical adjustment on their plunge routers. Our Plunge Base does just that. We've taken the patented micrometer dial/spindle assembly that we use in the Micro Fence System and adapted it to provide thousandth-of-an-inch control in the vertical axis.

The Micro Fence Plunge Base brings scalpel-like control to your routing operations and offers the ultimate in set-up accuracy and efficiency.

  1. The three-position turret indexes on a spring-loaded ball to seat precision-machined stops.
  2. A clearly marked stop rod limits your depth of cut to any tolerance you prefer. The stops provide 1/8” increments within .0015 tolerance. All other depths can be controlled by the stop rod and Micro Fence micrometer dial.

The Micro Fence Plunge Base is just one of the foundation pieces of our system and is compatible with all existing Micro Fence products. Used with the Micro Fence Edge Guide, you’ll have all the elements of a precision milling machine. We offer a special package that includes both of these foundation pieces, or you can opt for the Pro Plus Package which includes the Circle Jig Attachment as well.

  • Motor Carriage Accepts Laminate Trimmer Motors:
    • This option comes bored to fit the Bosch PR20 (European GMR-1).For any other model laminate trimmer or high speed rotary tool, the adapter(s) required are now included with your purchase price.
  • Stainless Steel & Bronze Bushing Plunge Mechanism
  • 2.75” Vertical Travel – (Depth Adjustment to .001”)
  • Concentric Collet-to-Base Positioning with 90° Scribed Base and Clear Acrylic Sub-Base compatible with PC template guide bushings.
  • One-Handle Plunge-Lock Mechanism
  • Three-Position Precision-IndexingTurret (1/8” increments) with Stainless Steel Stops
  • Laser-Marked Stainless Steel Stop Rod for Gross Adjustment
  • Top and Bottom Dust Collection Hoods  (Optional Accessories)
  • Right and Left Edge-Guide Mount Positions
    • (for left or right-hand operation or operations where opposing fences are beneficial)
  • Auto-Center Locating Bearings for Mortising Operations
  • Single-Allen Wrench Driver for all Locking Screws
  • 100% Non-Corrosive Material Construction
  • Compatibility with all Micro Fence Edge Guides, Circle Jigs, and all other accessories.
  • 6” Dia. Base
  • Compatible w/PC Temp. Guide Bushings
  • Wt: 3.85 lbs, 5.07 lbs w/Edge Guide
  • Vertical Adjustment to .001”
  • Overall Vertical Travel 2.75 

Our Plunge Base was designed for all forms of joinery details, hardware installations, decorative cuts, inlays, and set-up duplications. It offers a comfortable, more manageable, and precise alternative to heavier full-sized routers.


  • The base price for the Micro Fence Plunge Base (399.95) is for the Bosch Colt PR10/20 which requires no additional adapter ring or cup. All other laminate trimmers and high speed rotary tools will require either an adapter ring and/or adapter cup. Due to some confusion from customers about what adapters they need, we have now included the required adapters in the prices below. If you have any questions, just send us an email or give us a call at 1-800-480-6427.

  • In the drop down box below you will see some items with one asterisk (*)  which means the required Adapter Ring is included in your purchase price, and the items with two asterisks (**) include both the required Adapter Ring and High Speed Rotary Tool Cup Insert.


Available Options:
Metric or Imperial:
Plunge Base Model List:


Current Reviews: 5

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