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woodcut TRU-GRIND Instruction Manual
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woodcut TRU-GRIND Instruction Manual

Tool sharpening system
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The Woodcut Tru-Grind sharpening system will enable you
to sharpen all your woodturning tools, with only one jig:
Woodcut Tools Limited
Haumoana, Hawkes Bay, New Zealand
www.woodcut-tools.com
TRU-GRIND
Tool Sharpening System
• Bowl Gouges
• Fingernail Gouges
• Scrapers
• Skew Chisels
• Parting Tools
Phone + 64 (06) 875 1066
e-mail: sales@woodcut-tools.com
USA Patent No. US 6,935,937 B2
NZ Patent Appl. No. 521080
TM

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  • Page 1 TRU-GRIND Tool Sharpening System USA Patent No. US 6,935,937 B2 NZ Patent Appl. No. 521080 The Woodcut Tru-Grind sharpening system will enable you to sharpen all your woodturning tools, with only one jig: • Bowl Gouges • Fingernail Gouges • Scrapers • Skew Chisels • Parting Tools Woodcut Tools Limited...
  • Page 2 You may have to remove the manufacturers tool rest from the grinder if this obstructs use of the Tru-Grind system. If you would like to have continuing use of a simple toolrest at the grinder then you can add a Woodcut Sturdy Rest (see page 16) to your Tru-Grind.
  • Page 3 Tru-Grind Base-slide to get the height correct. Grinder Layout Set up the Tru-Grind and grinder on your bench as above with centre of the pivot points aligned with the centre line of the wheel. Stopper for Chisel Protrusion Fix a stopper of hard wood along part of the front edge of the base board or your bench.
  • Page 4 Page 4 INTRODUCTION Your Woodcut Tru-Grind system is designed to enable woodturners to repeatedly grind perfect bevels on all types of bowl gouges, spindle gouges, roughing gouges, skews, and scrapers. Once the Base-slide is set up as described, grinding a perfect bevel on a tool is very easy and you will be able to repeat this perfect bevel every time you re-sharpen the tool.

  • Page 5: Sharpening Instructions

    1. Tool Protrusion - In the setup instructions, we suggested you screw a block to your bench, approximately 2 inches (50mm) from the edge, which you use to set the protrusion of the chisel end from the Tru-Grind Toolholder. This setting must be consistent every time you grind the tool.
  • Page 6 Page 6 SUGGESTED SHARPENING ANGLES FOR COMMONLY USED TOOLS Traditional bowl gouge. Used on its side with the flute facing in the direction of the cut. With the bevel rubbing for a smooth finish even on end grain. Usually 10 to 15mm wide. Fingernail or Celtic Grind bowl gouge. Used on its side with the flute facing in the direction of the cut.
  • Page 7 Move the Base-slide in or out until the correct bevel angle is achieved. We set the bevel angle of our traditional gouges at 35 degrees. This angle can be checked with a Woodcut Tri-gauge. Hold the Tru-Grind Tool Holder comfortably in your hands. Locate the ball foot of the Tool Holder in the Pivot Point.
  • Page 8 Page 8 Fingernail or Celtic Grind Bowl Gouge This style of gouge has the sides of the tip ground back. To achieve this you need to adjust the pivot leg on the Tool Holder forward to between positions #4 and #8. The higher the number, the more the wings or sides will be ground back.
  • Page 9 Page 9 Skew Chisel Place your skew chisel into the Tru-Grind Toolholder with the blade verical and the point at the bottom. Adjust the protrusion to 2 inches or 50mm from the toolholder body and clamp it down firmly. Put the pivot leg into the rear base pivot position and lay the body on its side.
  • Page 10 Negative-rake scrapers with an unequal and curved sharp edge need to be sharpened using a regular grinder tool rest or the Sturdy Rest on the Tru-Grind system.
  • Page 11 “standards” previously mentioned. First Setting: Fit the gouge into the Tru-grind Toolholder with a 50mm (2”) protrusion as you would for any other gouge. Loosen the Base-slide of...
  • Page 12 2. Set the Tru-Grind to match the Woodcut “TruGrind Profiler” (see page 17) as a template or reference to reshape your gouge. 3. Set the Tru-Grind to match another chisel in your kit or a borrowed one. 4. Roughly shape a fingernail grind as in the drawing below before...

  • Page 13: Care And Maintenance

    Page 13 CARE AND MAINTENANCE Your Tru-Grind system and your grinding wheels need regular care and maintenance to get the best from them. Really sharp tools cut the wood cleanly and efficiently and leave you with less time spent on sanding and general cleanup. To achieve this...
  • Page 14 Page 14 Which size stone? This is about the curve the grinder puts into the face of the chisel; mostly bowl gouges and skews. There are three reasonably available options: the 6” stone; 8” stone; and a flat device such as a belt or disc sander. A bowl maker should be rubbing the bevel of the bowl gouge around both the outside and the inside of the bowl.
  • Page 15 Most suppliers of turning tools and accessories carry regular white aluminium oxide grinding wheels suitable for sharpening high speed steel tools. A diamond wheel dresser (such as the Woodcut T-Bar dresser) will clean and remove steel particles from the wheel and expose fresh sharp wheel particles for efficient sharpening.

  • Page 16: Optional Attachments

    The answer to the problem of flimsy and difficult to adjust grinder tool rests. Woodcut’s STURDY REST is made from thick plate steel to eliminate flexing and can be easily attached to your Tru-Grind Base-slide. STURDY REST Codes: PVS-LH and PVS-RH The Sturdy Rest without the Base Slide.
  • Page 17 Code: TRPR A reference for reshaping gouge shapes to the correct profile. Can be used as a visual reference, or put into the Tru-Grind Toolholder for adjustment to match the same shape as the profiler, before replacing with your gouge for grinding to the same shape.
  • Page 18 Page 18 Other Side Base-slide Assembly The Base-slide is made to fit on either side of the grinder but may be supplied to fit the wrong side for your preference on your grinder. If you prefer to use the other side simply take the assembly apart and re- assemble it.
  • Page 19 Page 19 The Ultimate Sharpening Centre This will incorporate a Base-slide under each wheel. One side for shaping using a 60 or 80 grit wheel and the other side for finishing using a 120 grit or finer wheel.

  • Page 20: Warranty Terms

    Freight to and from the factory will be at the expense of the purchaser. Woodcut Tools Limited Haumoana, Hawkes Bay, New Zealand Phone + 64 (06) 875 1066 e-mail: sales@woodcut-tools.com...