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tormek SVS-50 - User Manual

tormek SVS-50
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95
Multi Jig SVS-50
Grinding direction:
away from the edge.
Design
This patented jig consists of a housing (1) and two interchangeable seats – one closed, (2)
and one open, (3). The seats can swivel and be locked with the screw (6) at any skew angle
between 0° and 45°. Skew chisels have symmetrical bevels on both sides. With this jig you
mount the tool only once for grinding both the bevels. By turning the jig upside down you
can grind both of the bevels symmetrically.
Positioning of Machine
TURNING TOOLS
Square and skew chisels
with straight or curved edges.
Max width 32 mm (1¼").
Parting tools
Beading tools
Roughing gouges
Max width 50 mm (2").
CARVING TOOLS
Gouges, 25–50 mm (1–2").
Straight shanked or tapered.
Square and skew chisels
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Summary

Turning and Carving Tools

Turning Tools

Lists turning tool types like square, skew, parting, beading, and roughing gouges, with width limits.

Carving Tools

Lists carving tool types including gouges and chisels, specifying shank type and size range.

Positioning of Machine

Design of the Multi Jig SVS-50

Grinding Direction Guidelines

Turning Skew Chisels

Shaping Flat or Oval Straight Edge Skews

Details the process for shaping skew chisels with straight edges, including initial shaping.

Skew Chisel Selection Chart

Universal Support Positioning

Rounding Corners on Flat Skews

Details the importance and method for rounding the corners of flat skew chisels for smoother lathe operation.

Jig Settings and Components

The Closed Seat Design

Explains the re-designed closed seat, its dimensions, and its purpose for sharpening shorter tools.

Shaping Process Overview

Shaping Wide Chisels

Provides specific instructions for efficiently shaping wide chisels by grinding half the width at a time.

Sharpening and Re-Sharpening

Honing for a Mirror Finish

Explains how to move the jig to the honing wheel and polish the bevels to a mirror finish.

Creating Curved Edges on Skews

Grinding Area and Pressure Comparison

Compares grinding area and pressure for straight vs. convex edges, impacting grindstone performance and activation.

Principle of Curved Edge Creation

Shaping and Sharpening Curved Edges

Details the process of shaping and sharpening the curved edge of skews, ensuring symmetry.

Honing Curved Edges

Guides on the honing process for curved edges of tools to achieve a refined finish.

Customized Sharpening Profiles

Parting and Beading Tools Sharpening

Using the Open Seat for Specific Tools

Explains the setup and procedure for using the open seat for parting and beading tools.

Roughing Gouges Sharpening

Using the Open Seat for Roughing Gouges

Details the process for sharpening roughing gouges with the open seat, ensuring even wheel wear.

Honing Roughing Gouges

Explains the honing process for roughing gouges to achieve a sharp, polished edge.

Carving Gouges with Straight Shanks

Using the Open Seat for Straight Shank Gouges

Details the procedure for sharpening straight shank carving gouges using the open seat.

Shaping the Edge of Carving Gouges

Guides on shaping the edge of carving gouges for optimal performance and edge definition.

Tool Mounting and Jig Setup

Grinding Process Steps

Explains the grinding steps, ensuring even wheel wear and proper contact with the tool.

Honing Process Steps

Details the final honing stage to achieve a sharp, polished edge on the tool.

Refining the Tool Edge

Final Honing and Polishing

Guides on the honing process to achieve a mirror finish on the tool bevels.

Testing Tool Sharpness

Square Carving Chisels Sharpening

Using the Open Seat for Square Chisels

Explains the setup for sharpening square carving chisels using the open seat.

Honing Square Carving Chisels

Guides on honing square carving chisels for a sharp, precise edge.

Carving Skew Chisels Sharpening

Using the Closed Seat for Skew Chisels

Details using the closed seat for sharpening carving skew chisels, ensuring proper angle.

Setting Existing Skew Angle

Explains how to set the jig to match an existing skew angle on the chisel for accurate sharpening.

Setting New Skew Angle

Guides on setting a new, custom skew angle on the chisel using the jig's scale.

Setting Edge Angle and Grindstone Care

Grinding Carving Chisels

Details the grinding process for carving chisels, emphasizing fine sharpening and edge definition.

Grindstone Condition for Carving

Discusses preparing the grindstone for fine sharpening of carving chisels using a stone grader.

Honing Carving Chisels

Guides on the final honing steps for carving chisels to achieve a mirror finish.

Summary

Turning and Carving Tools

Turning Tools

Lists turning tool types like square, skew, parting, beading, and roughing gouges, with width limits.

Carving Tools

Lists carving tool types including gouges and chisels, specifying shank type and size range.

Positioning of Machine

Design of the Multi Jig SVS-50

Grinding Direction Guidelines

Turning Skew Chisels

Shaping Flat or Oval Straight Edge Skews

Details the process for shaping skew chisels with straight edges, including initial shaping.

Skew Chisel Selection Chart

Universal Support Positioning

Rounding Corners on Flat Skews

Details the importance and method for rounding the corners of flat skew chisels for smoother lathe operation.

Jig Settings and Components

The Closed Seat Design

Explains the re-designed closed seat, its dimensions, and its purpose for sharpening shorter tools.

Shaping Process Overview

Shaping Wide Chisels

Provides specific instructions for efficiently shaping wide chisels by grinding half the width at a time.

Sharpening and Re-Sharpening

Honing for a Mirror Finish

Explains how to move the jig to the honing wheel and polish the bevels to a mirror finish.

Creating Curved Edges on Skews

Grinding Area and Pressure Comparison

Compares grinding area and pressure for straight vs. convex edges, impacting grindstone performance and activation.

Principle of Curved Edge Creation

Shaping and Sharpening Curved Edges

Details the process of shaping and sharpening the curved edge of skews, ensuring symmetry.

Honing Curved Edges

Guides on the honing process for curved edges of tools to achieve a refined finish.

Customized Sharpening Profiles

Parting and Beading Tools Sharpening

Using the Open Seat for Specific Tools

Explains the setup and procedure for using the open seat for parting and beading tools.

Roughing Gouges Sharpening

Using the Open Seat for Roughing Gouges

Details the process for sharpening roughing gouges with the open seat, ensuring even wheel wear.

Honing Roughing Gouges

Explains the honing process for roughing gouges to achieve a sharp, polished edge.

Carving Gouges with Straight Shanks

Using the Open Seat for Straight Shank Gouges

Details the procedure for sharpening straight shank carving gouges using the open seat.

Shaping the Edge of Carving Gouges

Guides on shaping the edge of carving gouges for optimal performance and edge definition.

Tool Mounting and Jig Setup

Grinding Process Steps

Explains the grinding steps, ensuring even wheel wear and proper contact with the tool.

Honing Process Steps

Details the final honing stage to achieve a sharp, polished edge on the tool.

Refining the Tool Edge

Final Honing and Polishing

Guides on the honing process to achieve a mirror finish on the tool bevels.

Testing Tool Sharpness

Square Carving Chisels Sharpening

Using the Open Seat for Square Chisels

Explains the setup for sharpening square carving chisels using the open seat.

Honing Square Carving Chisels

Guides on honing square carving chisels for a sharp, precise edge.

Carving Skew Chisels Sharpening

Using the Closed Seat for Skew Chisels

Details using the closed seat for sharpening carving skew chisels, ensuring proper angle.

Setting Existing Skew Angle

Explains how to set the jig to match an existing skew angle on the chisel for accurate sharpening.

Setting New Skew Angle

Guides on setting a new, custom skew angle on the chisel using the jig's scale.

Setting Edge Angle and Grindstone Care

Grinding Carving Chisels

Details the grinding process for carving chisels, emphasizing fine sharpening and edge definition.

Grindstone Condition for Carving

Discusses preparing the grindstone for fine sharpening of carving chisels using a stone grader.

Honing Carving Chisels

Guides on the final honing steps for carving chisels to achieve a mirror finish.

Overview

The Tormek Multi Jig SVS-50 is a versatile sharpening jig designed for a wide range of turning and carving tools, including square and skew chisels, parting tools, beading tools, roughing gouges, and carving gouges. This patented jig consists of a housing (1) and two interchangeable seats: one closed (2) and one open (3). The seats can swivel and be locked with a screw (6) at any skew angle between 0° and 45°, allowing for symmetrical grinding of bevels by mounting the tool once and turning the jig upside down.

Function Description:

The SVS-50 jig facilitates precise and repeatable sharpening of various tools by controlling three key factors: the setting of the jig to the skew angle (JS), the protrusion of the tool in the jig (P), and the Universal Support position (B). The Tormek Turning Tool Setter TTS-100 is used to control these factors, allowing users to select a desired profile from a chart and replicate it consistently.

Turning Tools:

  • Square and Skew Chisels: Accommodates tools with straight or curved edges, up to 32 mm (1¼") in width. Skew chisels have symmetrical bevels on both sides. The closed seat (2) is specifically designed for precision sharpening of turning skew chisels with oval or square sections and curved or straight edges. It mounts the chisel in the center of the seat, ensuring bevels are ground to the exact same shape. Tool sizes from 13 mm (½") to 35 mm (1½") are supported.
  • Parting Tools, Beading Tools, Roughing Gouges: These tools, with edges ground square across the shank, are sharpened using the open seat (3). The open seat can also be used for short skew chisels. Roughing gouges can be sharpened up to 50 mm (2") in width.

Carving Tools:

  • Gouges: Handles gouges from 25-50 mm (1-2") with straight or tapered shanks.
  • Square and Skew Chisels: Supports both square and skew carving chisels. For square carving chisels, the minimum blade length is approximately 100 mm (4") at a 25° edge angle. For shorter blades (down to 75 mm / 3"), the SVS-38 jig is recommended. Carving skew chisels typically have a skew angle of approximately 25°. The jig allows for sharpening with an existing skew angle or shaping to a new one. The minimum length for a carving skew chisel is approximately 105 mm (4⅛") at a 25° edge angle and 25° skew angle.

Important Technical Specifications:

  • Max Tool Width (Skew Chisels): 32 mm (1¼")
  • Max Tool Width (Roughing Gouges): 50 mm (2")
  • Skew Angle Range: 0° to 45°
  • Tool Size (Closed Seat for Skew Chisels): 13 mm (½") to 35 mm (1½")
  • Minimum Blade Length (Carving Skew Chisels): Approx. 105 mm (4⅛") at 25° edge and 25° skew angle.
  • Minimum Blade Length (Square Carving Chisels): Approx. 100 mm (4") at 25° edge angle (or 75 mm / 3" with SVS-38 jig).
  • Protrusion (P) for Parting/Beading Tools, Roughing Gouges, Carving Gouges, Carving Chisels: 75-100 mm (3-4")
  • Protrusion (P) for Carving Skew Chisels: 50-75 mm (2-3")

Usage Features:

  • Grinding Direction: Grinding away from the edge with the Universal Support placed horizontally is recommended. This provides lighter grinding pressure for easier control, especially with small tools, allows for better visibility of the grinding process as no water flows over the edge, and the wheel's rotation pulls the jig towards the Universal Support, eliminating the risk of vibration. For initial shaping requiring significant steel removal, the Universal Support can be placed vertically, with the wheel running towards the edge, which increases grinding pressure.
  • Tool Mounting: Tools are mounted in either the closed or open seat. The closed seat uses a side screw (4) for fixing, while the open seat uses a top screw (5). Both seats are locked to the housing with a bottom screw (6) to set the skew angle.
  • Shaping Process:
    • Skew Chisels: The jig is set to the desired skew angle (JS), and the tool's protrusion (P) is adjusted. The Universal Support position (B) is set using the TTS-100. During shaping, the tool is lifted and moved sideways, not slid, with forward pressure applied on the handle side to counteract the wheel's force. The grindstone is activated with the coarse side of the Stone Grader SP-650. Grinding continues until bevels are symmetrical.
    • Curved Edges: A curved (convex) edge can be created on flat and oval skews by pivoting the jig on the bevelled corner of the jig (A) on the Universal Support. This requires setting the SVS-50 jig to 30° instead of 20° for a straight edge.
    • Wide Chisels: For wide chisels, grinding half the width at a time increases grinding pressure and efficiency.
  • Sharpening Process: Once the desired shape is created, subsequent sharpenings are quick and easy by replicating the three settings (JS, P, B) from the Profile Label.
  • Edge Angle Setting: The edge angle is set by adjusting the Universal Support. For replicating an existing angle, the Marker Method (page 41) is used. For setting a new angle, the AngleMaster (page 142) can be used.
  • Grindstone Condition: For carving chisels, the grindstone is usually graded to a finer grit with the Stone Grader SP-650 for fine sharpening. For shaping, the normal fast grinding condition is used.
  • Customized Profiles: The jig allows for sharpening skews with geometries other than the standard TTS-100 shapes. This involves mounting the tool with a 65 mm protrusion, setting the skew angle, and then using the Marker Method to set the edge angle. The protrusion (P) and jig setting are noted on a recipe label and applied to the ferrule.
  • Honing: After grinding, the Universal Support is moved to the honing wheel. Both sides of the tool are honed alternately until the burr is removed and the bevels are polished to a mirror finish. For carving gouges, the inside can be honed and polished on the Profiled Leather Honing Wheel LA-120.
  • Testing Sharpness: The tool is tested while still mounted in the jig by pushing the edge across wood fibers. A sharp edge should cut easily and leave a smooth surface.

Maintenance Features:

  • Grindstone Activation: For tools with large grinding areas (e.g., straight-edge skew chisels), the grindstone needs frequent re-activation with the Stone Grader SP-650 to maintain an active grinding surface and prevent glazing. Convex edges, with their smaller contact area, generate higher grinding pressure, which helps the grindstone activate itself more effectively.
  • Rounding Off Corners (Flat Skews): Before initial shaping of a flat skew, it's recommended to round off the corners. This improves tool movement on the lathe tool rest and helps the skew align more easily in the jig's seat. This can be done on the Tormek machine, and surfaces can even be polished on the honing wheel for reduced friction.
  • Checking Protrusion: After shaping, it's important to check that the tool's protrusion (P) has not decreased. If it has, re-position the tool to the correct protrusion and complete the shaping to ensure accurate replication in future sharpenings.
  • Burr Removal: During the finishing of the grinding operation, the burr must be removed frequently to clearly observe the thinning line of light and avoid over-sharpening.
  • Seat Redesign: The closed seat was redesigned in 2006 to be 10 mm shorter and slanted, allowing for the sharpening of shorter tools. Users with the older, longer seat are advised to trim it to 52 mm (23/64").

tormek SVS-50 Specifications

General IconGeneral
Brandtormek
ModelSVS-50
CategoryPower Tool
LanguageEnglish

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