Vari-Grind Attachment: Difference between revisions

Latest revision as of 15:29, 29 January 2026

Description

ToolInfoBox Vari-Grind Attachment

Synonyms:	Vari-Grind Jig Fingernail Grind Jig DE: Wolverine-Schärfhilfe
Type:	jig
Status:	available
Used with:	woodturning tools, Triton TWSS10 bench grinder
Location:	wood workshop (woodturning corner)
Tutors:	Lukas User:Neo
Manual:	https://oneway.ca/pdf/Part%202480%20Vari-Grind%20Dec%202010.pdf

The Vari-Grind Attachment extends the functionality of the Wolverine Jig by enabling repeatable and adjustable sharpening geometries for woodturning gouges. It is especially useful for shaping and maintaining swept-back and fingernail grinds.

By holding the tool at a fixed angle relative to the grinding wheel, the attachment allows consistent bevel angles while still offering flexibility through adjustable settings

Typical Grinding Geometries

Using the Vari-Grind Attachment, the following grinds can be achieved:

fingernail grind
bowl gouge grind
swept-back / side grind
Irish / Ellsworth-style grinds (depending on setup)

⚠️ As with all grinding jigs, light passes are essential to avoid overheating and uneven bevels.

Setup & Usage Notes

the attachment mounts into the V-arm of the Wolverine Jig
projection length of the tool strongly affects the grind geometry - Use 4,5 cm
small changes in angle or extension can lead to noticeable differences

always grind evenly across the full width of the bevel

Videos & Further Learning

For a detailed explanation and practical demonstrations, see the following videos:

Vari-Grind setup and usage (timestamped): https://youtu.be/31pzViUhJuQ?si=7cugImpCzDJui2SA&t=231
Bowl gouge sharpening with Vari-Grind: https://youtu.be/DmvlvY3mIHs?si=VKHbh_PTnNRaDgax

Notes

incorrect setup can still result in poor or unsafe tool geometry

overheating the tool edge will permanently damage the steel

@@ Line 5: / Line 5: @@
 |german=Schleifvorrichtung Fingernagel Wolverine
 |image=Vari-Grind Attachment.jpg
 |synonyms=Vari-Grind Jig
-Wolverine Vari-Grind Jig
-Gouge Sharpening Jig
-Bowl Gouge Jig
-Woodturning Tool Grinding Jig
 Fingernail Grind Jig
 <br>DE: Wolverine-Schärfhilfe
 |type=[[jig]]
@@ Line 22: / Line 19: @@
 |manual=https://oneway.ca/pdf/Part%202480%20Vari-Grind%20Dec%202010.pdf
 |similar=
-}}The '''Vari-Grind Attachment''' extends the functionality of the [[Wolverine Jig]] by enabling '''repeatable and adjustable sharpening geometries''' for woodturning gouges. It is especially useful for shaping and maintaining swept-back and fingernail grinds.
+}}
+The Vari-Grind Attachment extends the functionality of the [[Wolverine Jig]] by enabling repeatable and adjustable sharpening geometries for woodturning gouges. It is especially useful for shaping and maintaining swept-back and fingernail grinds.
-By holding the tool at a fixed angle relative to the grinding wheel, the attachment allows consistent bevel angles while still offering flexibility through adjustable settings.
+By holding the tool at a fixed angle relative to the grinding wheel, the attachment allows consistent bevel angles while still offering flexibility through adjustable settings
 === Typical Grinding Geometries ===