ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
Wooden Marking Gauge with a Wedge-Locked Headstock
A marking gauge scribes a line parallel to an edge: a square beam slides through a headstock, a steel pin near the end of the beam scratches the line, and a wedge locks the headstock at the distance you set. Make it from a hardwood strip and a filed steel pin.
The picture: a small walnut marking gauge; this one locks with a brass screw and marks with a blade, where ours uses a wedge and a pin.
Intermediate
An afternoon
Instructions
1
1
Beam and headstock
Beam and headstock
Plane a square beam about 20 mm thick and 200 mm long. Cut a block for the headstock and chop a square hole through it so the beam slides snugly.
Materials for this step:
Hardwood Strip2 piecesTools needed:
Hand Saw
Hand Plane
Try Square
Chisel Set - Wood2
2
Wedge slot
Wedge slot
Chop a tapered slot across the headstock that meets the beam hole, and plane a matching wedge about 1 in 12 (our taper).
Tools needed:
Chisel Set - WoodHand Plane3
3
The pin
The pin
Drill a small hole near the end of the beam, drive in a short length of steel rod, and file its tip to a fine point standing about 1 mm out.
Materials for this step:
Mild Steel Rod0.05 mTools needed:
Hand Drill
Hacksaw
Metal File4
4
Check and oil
Check and oil
Set it, run it along a straight edge, and check that the line is parallel at both ends. Oil the wood.
Materials for this step:
Linseed Oil0.02 literTools needed:
Try Square5
5
Why the wedge holds
Why the wedge holds
Loading Jupyter Notebook...
Materials
3- 2 piecesPlaceholder
- 0.05 mPlaceholder
- 0.02 literPlaceholder
This blueprint makes
Related Blueprints
These blueprints share knowledge with this one — techniques, materials, or principles that connect them in the learning graph.
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.