Sliding Bevels

About Sliding Bevels

A sliding bevel, also known as a bevel gauge or T-bevel, is an indispensable layout tool for accurately measuring, transferring and replicating angles. Unlike protractors that provide numerical readings, sliding bevels capture and hold any angle between 0 and 180 degrees, allowing precise transfer to your workpiece. Each tool comprises a handle (or stock) and a slotted blade secured by a locking mechanism, making them essential for carpentry, joinery, metalwork and construction applications where non-square angles are involved.

MyToolShed.co.uk stocks sliding bevels in various constructions and sizes to suit different trades and budgets. Traditional models feature hardwood handles in rosewood or beech paired with hardened steel blades, whilst modern alternatives include lightweight aluminium designs and CNC-machined options for enhanced precision. Blade lengths typically range from 150mm for fine detail work to 300mm for larger construction projects, with 200-250mm models offering excellent all-round versatility. Our range includes trusted brands such as Bahco, Draper, Faithfull, Stanley, Irwin, Marples, Hultafors, Facom and Sealey.

Applications

Sliding bevels are fundamental tools across numerous trades and projects:

• Carpenters and Joiners: Cutting roof rafters, setting compound mitres, staircase construction, transferring complex joinery angles
• Cabinetmakers and Furniture Makers: Matching angles in fine woodwork, setting table saw and mitre saw bevels, creating decorative chamfers
• Roofers: Determining roof pitch, cutting hip and valley rafters, measuring existing angles for extensions
• Metal Fabricators: Setting cutting equipment angles, transferring measurements to metalwork, checking welded joints
• Shopfitters: Installing angled displays and fixtures, creating bespoke shelving installations
• Timber Frame Builders: Setting complex joinery angles, measuring and cutting structural braces
• DIY Enthusiasts: Home renovations, garden structures, decking and fencing projects requiring angled cuts

Choosing The Right Sliding Bevels

Blade Length: Select 150-200mm blades for fine woodwork and detailed projects, whilst 250-300mm lengths suit construction and large timber work. A 200mm blade offers the best versatility for general applications.

Handle Material: Hardwood handles provide excellent grip and traditional durability for workshop environments. Aluminium models offer lighter weight for site work and won't be affected by moisture on building sites.

Construction Quality: Professional-grade models from Bahco, Marples and Facom feature precision-machined components and robust locking mechanisms for daily use. Budget-friendly options from Draper and Sealey provide excellent value for occasional users or apprentices.

Locking Mechanism: Wing nuts allow tool-free adjustment, whilst lever locks and knurled screws provide more secure holding power. Test that the mechanism tightens firmly and holds the blade absolutely rigid without excessive force.

Blade Quality: Look for hardened and tempered steel blades that remain flat without warping. Quality blades maintain accuracy over years of use and won't distort when locked at acute angles.

Frequently Asked Questions

What's the difference between a sliding bevel and an adjustable set square?

An adjustable set square typically includes measurement markings and preset common angles, whilst a traditional sliding bevel simply captures and transfers any angle without numerical measurement. Sliding bevels offer unlimited angle options and a more compact design for traditional trades, making them ideal when you need to match existing angles rather than set specific degrees.

Can I use a sliding bevel with power saws?

Absolutely—this is one of their primary uses. Capture the required angle with your sliding bevel, then hold it against your mitre saw or table saw's angle gauge to set the blade to exactly the same angle. This eliminates guesswork when transferring measurements from site to workshop.

How do I maintain my sliding bevel?

Keep the blade clean and free from sawdust, particularly in the slot. Apply light oil occasionally to metal components to prevent rust. Ensure the locking mechanism moves freely but tightens securely. Store in a dry location, preferably in a tool roll or box to protect from impacts. If the blade becomes bent, replacement is usually necessary as accuracy cannot be reliably restored.