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Leigh Multiple Mortise and Tenon User Manual

Multiple mortise and tenon attachment
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LEIGH
LEIGH
Multiple Mortise
Multiple Mortise
and Tenon Attachment
and Tenon Attachment
Joining Tradition with Today
USER GUIDE
USER GUIDE

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Summary of Contents for Leigh Multiple Mortise and Tenon

  • Page 1 LEIGH USER GUIDE LEIGH USER GUIDE Multiple Mortise Multiple Mortise and Tenon Attachment and Tenon Attachment Joining Tradition with Today...
  • Page 2 Your New Leigh M2 Attachment Congratulations! You now own the world’s on your Leigh Jig, carefully following the only jig for routing multiple mortise and tenon instructions in the first section of this manual. joints; one of the most difficult joints to hand- Then read the rest of the manual, following cut is made simple with the M2.

  • Page 3: Table Of Contents

    CHAPTER 5 – Basic Jig Functions ..............23 CHAPTER 6 – Wood Preparation ..............31 CHAPTER 7 – The Multiple Mortise and Tenon Joint ......35 CHAPTER 8 – Operations Procedures for Mortises ......39 CHAPTER 9 – Operations Procedures for Tenons ........49 CHAPTER 10 –...

  • Page 4: Glossary Of Symbols

    Glossary of Symbols The Leigh M2 Attachment can be in any one of three modes, depending on what part of the joint is being routed. Each finger assembly scale has its own mode icon, identifying that joint part.
  • Page 5 Which Way Round Should the Board Go? In nearly all the illustrations we have indicated which side of the board faces you when it is in the jig, e.g., this tenon board can face either inward or outward on the finished piece. This indicates the side of the board that will face outward on the finished project.
  • Page 6 G L O S S A R Y O F S Y M B O L S...

  • Page 7: Assembly And Mounting

    CHAPTER 1 Assembly and Mounting...
  • Page 8 A S S E M B LY A N D M O U N T I N G Chapter 1 M2 User Guide Make Sure You Have All The Parts! Before you start to assemble your Leigh M2, check to make sure you have received all the required parts.
  • Page 10 " [7,9mm] mortise scale and tighten thumb screws- . Now tighten scale lock screws firmly with Leigh screwdriver. Do not over-tighten. To ensure correct alignment, follow this same procedure whenever scales are removed from finger assembly. Move the outer finger on both ends out to...
  • Page 11 Using the M2 requires a small modification to your Leigh jig. Multiple tenons are routed in two separate stages at both ends of the jig …first on the left- and then, with the fin- ger assembly and tenon board flipped end for end …on the right- .
  • Page 12 A S S E M B LY A N D M O U N T I N G Chapter 1 M2 User Guide To solve this problem and correctly index the side stops, we have provided two metal sidestop extensions- . To complete the modification, you will also need to cut a simple ⁄...

  • Page 13: Using Your Attachment Safely

    CHAPTER 2 Using Your Attachment Safely...
  • Page 14 U S I N G Y O U R A T T A C H M E N T S A F E LY Chapter 2 M2 User Guide Chapter Foreword Safety is not optional. Read and follow the recommendations in this chapter.
  • Page 15 Read the owner’s manual that came with your router. It is essential to understand the router manufacturer’s instructions completely. Always wear hearing protection when using a router. Always wear approved safety glasses when using a router.
  • Page 16 U S I N G Y O U R A T T A C H M E N T S A F E LY Chapter 2 M2 User Guide Protect yourself from harmful dust by wear- ing a face mask. Never drink alcohol or take medications that may cause drowsiness when you will be operating a router.
  • Page 17 Before connecting the router to the power source, make sure the cutter and collet revolve freely in all the areas you plan to rout, and the cutter does not touch the guidebush or jig. Do not tilt the router on the jig. Keep the router flat on the jig assembly.
  • Page 18 Make plenty of simple open-face practice cuts without a guidebush before you try to use the rout- er on the Leigh Jig. You must, of course, always use a guidebush when routing on the Leigh M2.

  • Page 19: Adjusting The Finger Assembly

    CHAPTER 3 Adjusting the Finger Assembly...
  • Page 20 A D J U S T I N G T H E F I N G E R A S S E M B LY Chapter 3 M2 User Guide Chapter Foreword The finger assembly is the heart of the Leigh-M2. Spend a few minutes now to familiarize yourself with these simple adjustments.
  • Page 21 Practice with the finger assembly height adjustment. Loosen the support bracket knobs and hold them firmly. Raise and lower the assembly evenly, keeping it level, and tighten the knobs to lock it at various heights. Do not raise or lower one end of the finger assembly at a time.
  • Page 22 Always press on the centre of the guidefinger when tightening the screws. Do not over-tighten the guidefinger lock screws. The Leigh screwdriver provided will give ample torque for easy lock-up without strain. Always tighten unused guidefingers before...
  • Page 23 You can adjust the guidefingers by eye, or by measurement to suit a set of plans.
  • Page 24 A D J U S T I N G T H E F I N G E R A S S E M B LY Chapter 3 M2 User Guide...

  • Page 25: How Routers With Guidebushes Work

    CHAPTER 4 How Routers with Guidebushes Work...
  • Page 26 H O W R O U T E R S W I T H G U I D E B U S H E S W O R K Chapter 4 M2 User Guide Chapter Foreword The guidebush is the vital link between router and jig.
  • Page 27 The guidebush attaches to the base of the router and is fixed. It does not rotate. The cutter or bit goes through the guidebush and fits in the router collet or chuck. The projecting part of the guidebush runs along the side edge of a guide. The rotating cutter cuts the wood only, and touches nei- ther the guidebush nor the guide surface.
  • Page 28 H O W R O U T E R S W I T H G U I D E B U S H E S W O R K Chapter 4 M2 User Guide...

  • Page 29: Basic Jig Functions

    CHAPTER 5 Basic Jig Functions...
  • Page 30 B A S I C J I G F U N C T I O N S Chapter 5 M2 User Guide The two clamp bars hold workpieces horizontally or vertically. The side stops align the boards in the same position each time.
  • Page 31 THE SCALE MODES The Finger Assembly attaches to the support brackets in different modes to match the type of joint you are cutting. Your jig will include either inch or millimetre scales as ordered. INCHES MILLIMETRES The active scale is always on the right of each scale assembly.
  • Page 32 B A S I C J I G F U N C T I O N S Chapter 5 M2 User Guide CONCEPT OF OPERATION These illustrations show modes for ⁄ "[7,9mm] cutter. Start with the Finger Assembly in the ⁄...
  • Page 33 ACTIVE GUIDE SURFACES Mortise The Guidebush controls the cut on three sides of the mortise by running on a pair of guidefingers and on the finger rail. The router base controls the fourth side of the mortise by running on the inside of the mortise fence .
  • Page 34 B A S I C J I G F U N C T I O N S Chapter 5 M2 User Guide CONCEPT OF OPERATION Finish in ⁄ "[7,9mm] TENON mode...
  • Page 35 ACTIVE GUIDE SURFACES Tenon Flip the tenon board side for side to the other end of the jig, like turning a page of a book. Rout the remaining corners of the tenons. THE FINISHED JOINT...
  • Page 36 B A S I C J I G F U N C T I O N S Chapter 5 M2 User Guide...

  • Page 37: Chapter 6 - Wood Preparation

    CHAPTER 6 Wood Preparation...
  • Page 38 W O O D P R E P A R A T I O N Chapter 6 M2 User Guide...
  • Page 39 Stock for use on the Leigh M2 should gener- ally be prepared straight, flat, of even thick- ness and equal widths, with square ends and edges. The jig will work with boards of many odd shapes, but make sure the jig...
  • Page 40 W O O D P R E P A R A T I O N Chapter 6 M2 User Guide...

  • Page 41: The Multiple Mortise And Tenon Joint

    CHAPTER 7 The Multiple Mortise and Tenon Joint...
  • Page 42 T H E M U LT I P L E M O R T I S E A N D T E N O N J O I N T Chapter 7 M2 User Guide Joint Description Mortise Width is controlled by the Tenon Width is controlled by the dis- WIDTH distance between single guidefingers.
  • Page 43 Joint Technical Specifications, Guidebush and Cutter Selection Option 1: Option 2: ⁄ "[15,9mm] outside dia. Guidebush ⁄ "[11,1mm] outside dia Guidebush ⁄ "[12,7mm] Spiral Upcut Cutter* ⁄ "[7,9mm] Spiral Upcut Cutter Width of Joint Up to 24"[610mm] Up to 24"[610mm] Tenon Board Thickness ⁄...
  • Page 44 T H E M U LT I P L E M O R T I S E A N D T E N O N J O I N T Chapter 7 M2 User Guide...

  • Page 45: Operations Procedures For Mortises

    CHAPTER 8 Operations Procedures for Mortises...
  • Page 46 O P E R A T I O N S P R O C E D U R E S F O R M O R T I S E S Chapter 8 M2 User Guide IMPORTANT: Before using this attach- ment on a project, thoroughly familiarize yourself with the following procedures and adjustments.
  • Page 47 ⁄ "[12,7mm] collet, ⁄ "[15,9mm] guidebush, and ⁄ "[12,7mm] spiral upcut cutter (Leigh No.180). Fit the ⁄ "[15,9mm] guidebush securely to the router. Guidebush projection from the router base must be at least ⁄ "[5mm] and must not exceed ⁄...
  • Page 48 O P E R A T I O N S P R O C E D U R E S F O R M O R T I S E S Chapter 8 M2 User Guide 8-4 Joint Layout. Mark out the position of the top edge of the mortise row which will go towards the rear of the jig (the mortise line), about 4"[100mm] from the board end...
  • Page 49 Place the finger assembly on the support brackets in ⁄ "[12,7mm] mortise mode and exactly on the ⁄ "[12,7mm] setting indicated on the scale with a black triangle pointer. The position is illustrated here in red. Tighten thumb screws. Lower finger assembly to within ⁄...
  • Page 50 O P E R A T I O N S P R O C E D U R E S F O R M O R T I S E S Chapter 8 M2 User Guide 8-10 Always adjust and check for correct depth of cut.
  • Page 51 8-13 Place mortise fence on support brackets, fence up, until the fence touches the router base. With some small router bases, the fence may touch the fingers before reach- ing the router base. If so, See Figs. 8-14 and 15 below, otherwise, go directly to Figure 8-16.
  • Page 52 O P E R A T I O N S P R O C E D U R E S F O R M O R T I S E S Chapter 8 M2 User Guide 8-16 With light inward pressure on the fence, equalize the fence scale reading at each end of the jig on the most convenient pair of support bracket lines and tighten the fence...
  • Page 53 8-19 Rout out all mortise positions on this row and on all similar rows. Plunge and rout about one third of the board thickness at a time. 8-20 If you are routing through mortises in opposite cabinet sides, use the same refer- ence edge (cabinet front or rear) against the same side stop each time.
  • Page 54 O P E R A T I O N S P R O C E D U R E S F O R M O R T I S E S Chapter 8 M2 User Guide...

  • Page 55: Operations Procedures For Tenons

    CHAPTER 9 Operations Procedures For Tenons...
  • Page 56 O P E R A T I O N S P R O C E D U R E S F O R T E N O N S Chapter 9 M2 User Guide...
  • Page 57 Remove the mortise fence and the finger assembly. Clamp a straight sided board in the rear clamp, touching against the mor- tise block/side stop , and the front edge overhanging the jig front Place another straight sided board in the front clamp and position it so that the top left corner is perfectly flush with the side edge of the horizontal board...
  • Page 58 O P E R A T I O N S P R O C E D U R E S F O R T E N O N S Chapter 9 M2 User Guide For a crisp appearance, shoulder the tenons slightly .
  • Page 59 Always adjust and check for correct depth of cut. Through tenons should be cut to project slightly through the mortises to allow for cleanup Tenon depth for blind mortises should be cut slightly less than than the mortises to ensure clearance during assembly For through tenons, use the mortise board to mark its thickness onto the test board.
  • Page 60 O P E R A T I O N S P R O C E D U R E S F O R T E N O N S Chapter 9 M2 User Guide 9-10 Remove the test piece and turn it 180° under the same tenon guide and re-clamp.
  • Page 61 9-13 Rout the first half of the tenons. 9-14 Flip the board end for end, keeping the same board edge to the side stop exten- sion. Rout the first half of tenons at the opposite end of the board under the same guide fingers.
  • Page 62 O P E R A T I O N S P R O C E D U R E S F O R T E N O N S Chapter 9 M2 User Guide 9-16 You now need to set the right hand side stop extension- .
  • Page 63 9-19 Rout one end of the scrap tenon board and test for accuracy. Repeat the sidestop extension adjustment if necessary. Finish routing the scrap tenons and test for fit. If necessary, make final adjustments for tenon height before routing the second half of all tenons. 9-20 Procedures are identical for ⁄...
  • Page 64 O P E R A T I O N S P R O C E D U R E S F O R T E N O N S Chapter 9 M2 User Guide 9-22 ...remove the bridge pieces and use the dovetail jigs cross cut bar to shoulder the square tenons- .

  • Page 65: Chapter 10 - Beyond The Basics

    CHAPTER 10 Beyond the Basics with the Leigh M2...
  • Page 66 B E Y O N D T H E B A S I C S Chapter 10 M2 User Guide Chapter Foreword Here are some unique (and inexpensive) “joinery extras” your M2 will help you rout. No other jig in the world can produce these variably spaced box joints and “jumbo”...
  • Page 67 Cut square tenons vertically under both mortise and tenon guides and presto! Make corner joints, end-on-end joints, hinges etc. The unique Leigh adjustable guide fingers provide the joint edge finish you want on any workpieces. 10-2 Half-Blind Variable Finger Joints...
  • Page 68 B E Y O N D T H E B A S I C S Chapter 10 M2 User Guide...

  • Page 69: Appendix I - Guidebush And Cutter Selection

    APPENDIX I Guidebush and Cutter Selection...
  • Page 70 G U I D E B U S H A N D C U T T E R S E L E C T I O N Appendix I M2 User Guide Joint Technical Specifications, Guidebush and Cutter Selection Option 1: Option 2: ⁄...
  • Page 71 ⁄ "[12.7mm] cutter. " [ 1 5 , 9 m m Here are the two types of Leigh guidebush and five Leigh adaptors. Use the chart on " [ 1 5 , 9 m m page 67 to select the adaptor and / or guide- bush required for your router.
  • Page 72 Leigh 711TP and 716TP (TP stands for Two Part) fit directly to Porter Cable and most Black & Decker routers. Leigh universal adaptors fit to a wide range of plunge routers and accept one or both types of Leigh bush.
  • Page 73 Check the make and model of your router in the left hand column. Where possible always order the Leigh adaptors and guidebushes (in red) which are specially designed for use on Leigh jigs. Other adaptors or guidebushes must be purchased from the manufacturer’s own distributor. ROUTER...
  • Page 74 G U I D E B U S H A N D C U T T E R S E L E C T I O N Appendix I M2 User Guide...

  • Page 75: Appendix Ii - Parts List

    APPENDIX II Parts List...
  • Page 76 P A R T S L I S T Appendix II M2 User Guide NOTE: When ordering parts, please quote the product model, serial number (on underside of fence scales), part number, part description and quantity required. PART NO. QUANTITY DESCRIPTION M2 User’s Guide ⁄...
  • Page 77 651 M 641M...
  • Page 78 P A R T S L I S T Appendix II M2 User Guide...

  • Page 79: Appendix Iii - Customer Support

    APPENDIX III Customer Support...
  • Page 80 *Email can be useful, but technical queries usually raise queries from us. So the telephone (if possible) is a much quicker and more convenient way to get those queries answered; either directly to Leigh (toll-free in North America) or to your national distributor. …Thanks! Distributors Australia &...

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