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Body Fillers

Choosing the correct filler from such a wide range is not easy for the beginner or even for those who have used fillers in the past. Different fillers are used for different surfaces or substrates and the main types are:

Always make sure you purchase the correct filler for the appropriate repair. In some instances you may need to use a very fine filler (known as a stopper) to fill any minor imperfections in the base filler. Our substrate chart below should help you with your decision. However, should you still be unconfident in your choice please e-mail us with details of your questions/dilemma and we will get back to you. We want you to choose the most appropriate product for your repair and to achieve the best results possible.

What are you filling? Holes, dents, scratches, minor imperfections in mild steel, fibreglass, plastic, aluminium, zinc, galvanised steel… the list goes on.

All fillers are supplied with the correct amount of hardener. Please ensure that you mix the filler and hardener in the correct ratios (as per the Technical Data Sheet). This is extremely important as most hardeners contain peroxide and, if too much hardener is used, the peroxide can bleed from the filler into the paint and cause the finished paint colour to become lighter.

Always degrease (panel-wipe or clean) the panel before applying the filler. Most fillers are sanded with P40-P80-P120 production paper with P80 being the most popular. The Technical Data Sheet for your chosen product will give you the precise instructions as to which grit of abrasive will give you best results.

Fine Fillers and Stoppers will require finer sanding – again, please sand as per Technical Data Sheet instructions.

 

Substrate Chart

 

Stoppers

When are Stoppers used?

Stoppers are generally used for minor imperfections, small scratches, body filler pin holes and also after priming if you still need minor corrections of your repair.

Applying Fillers and Stoppers

Plastic spreaders and Metal spreaders are used for applying fillers. The one you use is down to personal preference as both are equally as good at doing the job.

Stoppers are often applied using stopper rubbers.

Why Use Mixing Boards?

A Mixing Board (or Onion Board) provides a clean, hard, uncontaminated surface on which to measure and mix the correct ratio of filler and hardener. We stock an onion board containing 100 tough, impermeable sheets which can be torn off and discarded to reveal the next clean sheet for your next filling task.

Tips:


More Help

Abrasives

Aquamax Water Based Basecoat Paint

Body Fillers

Clearcoat/Lacquers

Masking

Maxicar Basecoat Paint

MIPA Cellulose Paint

Panel Cleaning

Personal Safety

Priming

Tools & Equipment

Types of Paint

Glossary

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