Repair Process III

1. Tools needed for the repair

•  InterTroton or Master silicone remover
• InterTroton or Master thinner for acrylic products
• Sand paper (for the beginning, for dry) P120-P320, finishing P400-P500 (for dry) P800-P1200 (for wet) for the machine, grindstone, mechanical equipment (see the substrate preparation), containers to mix products
• Varnish tape, paper, cover foil to protect a vehicle (parts which are not repaired), antistatic cloth
• Japanese putty knives to apply polyester putty
• InterTroton or Master putty
• InterTroton or Master epoxy primer (used as anticorrosion and septal base)
• InterTroton or Master acrylic primer
• Base coat (colour)
• InterTroton or Master clearcoat

2. Step by step process

Substrate preparation

•  On a repaired part, do a thinner test (substrate preparation)
• If the result is positive – remove old coating up to bare steel, if negative – you can follow next steps in the process
• Remove dust using compressed air
• Clean the repaired part (silicone remover)
• Cover not repaired parts
• Sand a damaged part starting from a sand paper P120 – P180, remove corrosion thoroughly mechanically or manually (see substrate preparation)

Epoxy primer application

• Using compressed air, remove dust,
• Clean the repaired part with silicone remover
• Where steel is cleaned from corrosion in parts or the whole panel, apply InterTroton or Master epoxy primer (according to the Technical Data Sheet of a product)
• Sand the epoxy primer in a part where polyester putty is to be applied (sand paper for dry P180-P220)

Putty application

• Remove the rest of dust and pollution, using compressed air
• Clean the repaired part with silicone remover
• Apply polyester putty in two layers with a correct time of drying (according to the Technical Data Sheet of a product). If there is roughness, polyester putty with glass or carbon fibre should be applied first and then filling or finishing putty from InterTroton or Master brand.
• Sand the putty with the sand paper P120-P180 at first, finishing with P220-P320

Epoxy primer application

• Using compressed air, remove dust and pollution
• Clean the repaired part with silicone remover
• Cover not repaired part
• Clean again with the silicone remover, after a thorough evaporation of the remover
• Apply the same epoxy primer which was used earlier, use it as a divider-isolation in sanded places (putty-steel), after a correct time of drying, wet on wet or with sanding (according to the Technical Data Sheet of a product)

Acrylic primer application

• Then apply InterTroton or Master acrylic primer, which was used earlier (according to the Technical Data Sheet of a product)
• After hardening, sand with the sand paper P400-P500 (for dry sanding or manual) or P800-P1200 for wet (sanding the surface on wet, remember to remove water straight after sanding). We recommend sanding on dry.

Clearcoat application

• After a correct time of base coat drying (see manufacturer’s Technical Data Sheet) (using antistatic cloth, wipe dust or impurities from the surface)
• Apply clearcoat (1,5-2 layers for VHS clearcoats, 2 layers for MS, HS clearcoats), see Technical Data Sheet for using a product

3. Warning!

• Use only original products recommended by a manufacturer
• Follow Technical Data Sheets of a product
• Dry processing of materials is recommended
• During works, use personal protective clothing
• Use IR infrared searchlight which is to speed up the drying process of materials
• The temperature and moistness are crucial for products and the repair
• On reactive primer, do not apply polyester products (putties, primers)