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Isoloc Joint Templates for D4R Pro Dovetail Jigs and Super Jig Dovetail Jigs

Isoloc Joint Templates

I1A/B/C fits 24" D4R Pro, D4R, D4, D3 and D1258/R Jigs
I18B, I24A and I24B fits Super18 and Super24 Jigs
I1600A/B/C fits the D1600 Jig

It's no accident the dovetail joint has endured through centuries of hand cut joinery as the sole design for mechanically interlocked corner joints. After all, if your saw and chisel are made to cut straight lines, how can you cut dovetails any other way? It took the introduction of hand-held routers and the ingenuity of Leigh Industries to develop a genuinely new hybrid dovetail design, the Isoloc* joint.

The revolutionary Isoloc joint represents the first entirely practical alternative to the traditional half-blind dovetail. With a Leigh Dovetail jig and an Isoloc template, even novice woodworkers can produce extraordinary joinery that is strong, functional and distinctively attractive.

By replacing the Dovetail finger assembly with one of the three Isoloc templates, you are ready to produce some very creative joinery. Each template features two joint patterns, one design carefully CNC machined on each side of the template. A single 5/16" or 8mm straight bit, preferably an upcut spiral, does all the routing.

Isoloc templates are designed primarily for half-blind joints though several of the patterns can be set up to produce through and end-on-end joints. Inlaid and Shadow Inlaid joints give an even more intriguing look to the beautiful organic shapes of Isoloc joints.

Isoloc templates are available for all 24" "D" Series Dovetail Jigs, 18" and 24" Super Jigs and the D1600

VGS Accuracy
Joint fit is easily and precisely controlled using Leigh's patented Variable Template Guidebush System (VGS), a unique adjustable 3-piece template guidebush.

The VGS comes standard with every
Leigh Isoloc template

Rotating the barrel of the VGS, up or down, increases or decreases it’s active diameter. A 1/8 turn of the barrel adjusts joint fit by a mere one thousandth of inch!

The VGS is standard equipment with every Isoloc template. It mounts directly to many router bases. Some routers may require a Leigh template guidebush adaptor.

The name Isoloc was coined from two words: Iso from the Greek word isos, meaning equal, and loc, an abbreviation of lock.

*Patented in U.S.A., Canada and Europe
Overview VIDEO
  • Precision CNC machined aluminum alloy template
  • Scales with inch and metric measurement
  • Fully adjustable joint fit with the VGS Variable Guidebush System

Standard Equipment
  • Leigh 5-piece VGS Variable Template Guidebush System (with nominal 1/2" OD guide)
  • Fully illustrated user guide

Please Note:
Bits Not Included

All Isoloc joints require a 5/16" straight bit. Inlaid Isoloc joints require two additional straight bits, 1/4" and 3/8". Leigh recommends spiral upcut bits for Isoloc joints. Click here for Isoloc bit selection.


How to Rout Isoloc Joints

How to Select The Right Bits for Isoloc Joints.



I1A - 24  Isoloc Joint Template model I1A, Key & Mirror Key ***For 24" D4R Pro, D4R, D4, D3 and D1258 D-Series Jigs*** $219.00 USD

Key and Mirror Key joint patterns.
Board width capacity: Key:23 3 ⁄4 " Mirror Key :22 3 ⁄4 "
Shipping weight 7 lb.
I1B - 24  Isoloc Joint Template model I1B, Clover & Bears Ears ***For 24" D4R Pro, D4R, D4, D3 and D1258 D-Series Jigs*** $219.00 USD

Clover and Bears Ears joint patterns
Board width capacity: Clover: 23 3 ⁄4 " Bears Ears: 22 1 ⁄4 "
Shipping weight 7 lb.
I1C - 24  Isoloc Joint Template model I1C, Ellipse & Wave ***For 24" D4R Pro, D4R, D4, D3 and D1258 D-Series Jigs*** $219.00 USD

Ellipse and Wave joint patterns
Board width capacity: Ellipse:23 1 ⁄4 " Wave: 22 1 ⁄4 "
Shipping weight 7 lb.
I1-3pack  24" Isoloc Joint Template combo pak containing I1A, I1B and I1C templates***For 24" D4R Pro, D4R, D4, D3 and D1258 D-Series Jigs*** $549.00 USD

Get all three Isoloc templates, one VGS and one User Guide.
Save US $98 or CDN $122 over separate purchase.
Shipping weight 21 lb.
I18B - 18  18" Isoloc Template with two patterns; Bear's Ears and Clover ***For the Super 18 Dovetail Jig*** $199.00 USD
I24A - 24  24" Isoloc Template with two patterns; Key and Mirror Key ***For the Super 24 Dovetail Jig*** $209.00 USD
I24B - 24  24" Isoloc Template with two patterns; Bear's Ears and Clover ***For the Super 24 Dovetail Jig*** $209.00 USD
I1600A - 16  Isoloc Joint Template model I1600A, Key and Mirror Key ***For the D1600 Dovetail Jig*** $199.00 USD
I1600B - 16  Isoloc Joint Template model I1600B, Clover and Bears Ears ***For the D1600 Dovetail Jig*** $199.00 USD
I1600C - 16  Isoloc Joint Template model I1600C, Ellipse and Wave ***For the D1600 Dovetail Jig*** $199.00 USD
I1600-3  Isoloc Joint Template combo pak containing I1600A, I1600B and I1600C templates ***For the D1600 Dovetail Jig*** $479.00 USD
1617I-C  3 pc. solid carbide spiral upcut bit set for all Isoloc Templates $89.00 USD

Click here to view our shipping rates.

D4R Pro Dovetail Jig
Super 12 Dovetail Jig
Super 18 Dovetail Jig
Super 24 Dovetail Jig
R9 Plus Dovetail & Box Joint Jig
F3 Finger Joint Template
F18 Finger Joint Template
F24 Finger Joint Template
Isoloc Joint Templates
FMT Pro Mortise & Tenon Jig
FMT Jig Upgrade
Super FMT Mortise & Tenon Jig
M2 Multiple Mortise & Tenon Jig
Dovetail Jig Accessories
VRS Vacuum & Router Support
VRS Accessory Kits
Accessory Kits for Leigh Mortise & Tenon Jigs
Router Bits, Dovetail
Router Bits, Spiral Upcut
Router Bit Sets
Template Guidebushes and Adaptors
Bridge Piece Material
Earlier Model Jig Upgrades
Clamps, Hold Down
F-Clamps for the Super FMT
User Guides
Videos, Instructional

Mortise & Tenon Jig Accessories
FMT/Pro Sidestop Upgrade
Accessories / Accessory Kits
Vacuum Box Attachment
Router Bits, FMT Pro
Router Bits, Super FMT
Router Bit Sets
Photo Galleries
Dovetail Joint Photo Gallery
Isoloc Joint Photo Gallery
Frame Mortise & Tenon Joint Photo Gallery
Multiple Mortise & Tenon Joint Photo Gallery
Finger / Box Joint Photo Gallery

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