Plunge Base (Original): for Laminate Trimmer Motors


“Swiss-watch precision and smooth operation are combined in a package that is easier to compare to fine German sports cars than to other woodworking tools.” — Robert Lang, Popular Woodworking

The Micro Fence Original Plunge Base is one of the foundation pieces of our system and is compatible with all existing Micro Fence products. Used with the Micro Fence Edge Guide or Circle Jig, you’ll have all the elements of a precision milling machine. Introduced in 2006, the Plunge Base was honored in the “Best New Tool” review of Popular Woodworking magazine. In 2011 it received the AWFS Sequoia Award for “Leadership in Product Innovation” in the Power Tools category.

A number of accessories are listed below and shown in the thumbnail pictures to the left that can expand the versatility of this tool (more information on each accessory is available on the Accessories pages).

If you’re interested in a more complete kit, our Package Deals page offers combinations that include our foundation pieces with the Plunge Base.



Plunge Base Mounting Bar

Needed to adapt our Edge Guide to fit the Plunge (included when purchasing the Edge Guide with the Plunge Base).

LED Light Ring

Six LED circuit board light ring with power cord and installation kit

Dust Hood Kit

Top and Bottom Dust Collection w/ Vacuum Hose Adapter

Maintenance Kit

Everything you’ll need to maintain smooth operation.

Center Bar & Levelers Kit

Small Circles from 1/2″ to 12″ with our Edge Guide.

Precision Guide Bushing Sub-base

Counter-bored holes to provide positioning adjustment. (.345″ Thickness)

Precision Template Guide Bushing Set

1/8″ , 1/4″ , 3/8″ , 1/2″ Guide Bushings, Stainless Centering Hubs, Centering Pin Gauge and Collet Adapter in a Walnut /Beech Storage Box. Concentricity spec: .0005″.

SKU: PB Category:


  • 6” Diameter Base
  • Compatible w/PC Template Guide Bushings
  • Wt: 3.85 lbs, 5.07 lbs w/Edge Guide
  • Vertical Adjustment to .001”
  • Overall Vertical Travel 2.75
  • The base price for the Micro Fence Plunge Base is for the Bosch Colt PR10/20, which requires no additional adapter ring or cup. All other laminate trimmer and high-speed rotary tool motors require an adapter to fit in the Plunge Base.
  • A clearly marked stop rod limits your depth of cut to any tolerance you prefer. The three-position turret indexes on a spring-loaded ball to seat precision-machined stops at 1/8” increments within .0015 tolerance. All other depths can be controlled by the stop rod and Micro Fence micrometer dial, which is scaled in thousandths.
Our Plunge Base was designed for all forms of joinery details, hardware installations, decorative cuts, inlays, and set-up duplication. It offers a comfortable, more manageable, and precise alternative to heavier full-sized routers.

Additional information

Weight 4.5 lbs
Dimensions 8.5 x 8.5 x 8.5 in

Imperial, Metric

Plunge Base

Bosch 1608*, Bosch PR 10/20, Bosch GFK 600, DeWalt 611*, DeWalt 670*, Kress 1050 FME*, Makita 3707*, Makita RT0701C*, Makita XTR01 Cordless, Porter Cable 310*, Porter Cable 450*, Proxxon IB/E**, Rigid 2400*, Trend T3*, Trend T4*


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