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OnBuy.com£23.87Visit shop Faithfull Trammel Head Set Bar 31Mm Capacity
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The Faithfull Trammel Head Set is an essential tool for carpenters, woodworkers, and metalworkers who need to scribe large circles or measure distances exceeding the capacity of standard dividers. It provides high precision for layout work and template creation, though users must provide their own beam (wood or metal bar) to complete the assembly.
| Model Part Number | 1226014 |
|---|---|
| Brand | Faithfull |
The set is designed to fit onto any wood or metal bar up to 31mm in width.
No, the trammel heads are sold as a pair, and you must supply your own beam for the desired length.
Yes, as long as the beam chosen is rigid enough to hold the heads securely, they work effectively on both wood and metal.
Measure the distance from the inside of the needle point to the tip of the pencil lead before tightening the clamps to ensure the radius is exact.
The needle point is durable, but if it becomes blunt, it can be honed or sharpened with a metal file or stone.
Ensure the clamping screw is fully tightened and that the beam surface is free of oil or dust that may cause the head to slip.
Check the pencil clamp screw and ensure it is tightened sufficiently; if using a thinner pencil, consider wrapping it with masking tape for a better grip.
Check that the needle point is properly seated at the pivot center and verify that the beam is not flexing during rotation.
To set up your trammel heads, identify a sturdy bar—a flat piece of wood or a rectangular metal tube—no wider than 31mm. Slide the heads onto the bar and tighten the adjustment bolts until they are immovable. When marking, hold the pencil head at a consistent angle to ensure the line width remains uniform. To maintain the tool, keep the needle points sharp by periodically honing them and apply a light machine oil to the clamping screws to prevent rust and ensure smooth operation. Store in a dry environment to maintain the integrity of the metal components.
