Fibreglass pencil replacements (4 mm) x3

Vallejo Fibreglass Replacements: Keep Working Without Interruptions

When the abrasive pencil is in full swing —removing rust, cleaning joints, or preparing surfaces before painting— the last thing you need is to halt the project due to lack of material. This set of 3 fibreglass replacements of 4 mm from Acrylicos Vallejo is designed exactly for that: to always have the right spare on hand so you can continue with full efficiency.

Function and Performance

Fibreglass acts as a precision abrasive that works locally, without affecting adjacent areas. Thanks to the adjustable length system of the pencil, you can adjust how much the fibre protrudes from the holder to modulate the aggressiveness of the treatment:

• Short protrusion: the fibre remains stiffer, with greater material removal capacity. Ideal for eliminating rust, remnants of poorly cured putty, or deposits in joint areas.
• Long protrusion: the fibre gains flexibility, resulting in a smoother abrasion. Perfect for cleaning delicate surfaces, lightly polishing, or preparing the substrate for adhering Vallejo primers or paints.

Compatibilities and Materials

These replacements are designed to work on a wide variety of materials commonly used in static modelling, slot racing, and dioramas:

• Ferrous and non-ferrous metals (brass, steel, aluminium…)
• Modelling resins
• Injection moulded plastics and polystyrene

They are compatible with the Vallejo T15001 abrasive pencil. Before installing the replacement, ensure that the tool is not under pressure and the cap is loosened to avoid damaging the fibres during assembly.

Assembly and Preparation

Replacing the spare is quick and does not require additional tools. Loosen the adjustment ring of the pencil, remove the worn rod, insert the new replacement, and retighten until the desired protrusion length is fixed. Before starting work, make a couple of test passes on waste material to check that the abrasion is suitable for the task.

Common Mistakes

• Excessive pressure: fibreglass works better with smooth and constant passes. Excessive pressure prematurely wears out the replacement and can overly mark the surface.
• Not protecting your hands: fibreglass particles are irritating. It is recommended to work with gloves and in a well-ventilated space.
• Storing the pencil with the fibre exposed: when not in use, it is advisable to retract the fibre to protect it and prolong the lifespan of the replacement.

Frequently Asked Questions

What tool are these replacements compatible with?

They are specifically designed for the Vallejo T15001 abrasive pencil. We do not guarantee their functionality in holders from other brands with different fastening systems.

How many units does the set include?

The pack contains 3 fibreglass replacements of 4 mm diameter.

Are they safe to use on model plastics?

Yes, as long as the fibre protrusion length is correctly adjusted and smooth passes are made. For thin plastics or very delicate detail areas, it is advisable to use the minimum protrusion and conduct prior tests.

How often should the replacement be changed?

It depends on the intensity of use and the material being worked on. On metal surfaces with pronounced rust, wear is greater. When you notice that the fibre is excessively shortened or loses abrasive effectiveness, it is time to replace it.

Can I use these replacements wet?

Fibreglass can work dry. It is not suitable for wet use, as it could compromise the fastening system of the pencil and reduce the effectiveness of the abrasive.

The Vallejo VAT15002 replacement sticks (4 mm, set of 3) are the go-to consumable for modellers and figure painters who rely on the Vallejo fibreglass pencil for precise surface cleaning, rust removal and pre-painting preparation on metal, resin and plastic. Compatible with the Vallejo T15001 abrasive pencil, these high-quality fibreglass refills let you control abrasion intensity by adjusting the exposed length of the fibre, making them a staple tool for scale modelling, static kits, dioramas and slot car preparation workshops.