GOODING GD-400 Full Effect Clearcoat MS High-Flow Mirror Gloss Finish Topcoat Varnish

Product Overview

Every modern paint shop faces the same challenge: turning vehicles over quickly without compromising on gloss depth or long-term durability. GOODING GD-400 Full Effect High Gloss Clearcoat (by YATU) is a premium, double-component automotive refinishing varnish designed to deliver an incredible "wet-look" mirror gloss while cutting down on workshop cycle times.

With its excellent flow, self-leveling behavior, and quick-curing performance, GD-400 minimizes dust nibs, eliminates orange peel, and provides a forgiving, easy-to-polish finish. Whether you're working on a single-panel spot repair or a complete high-end vehicle restoration, GD-400 gives painters absolute control in the booth, ensuring a right-the-first-time finish with zero costly reworks.

Why Collision Centers & Painters Choose GD-400

• Wet-Look Mirror Finish: Delivers a deep, glass-like gloss (exceeding 95 units at a 60-degree angle) that brings out the vibrant flake and depth of metallic and pearl basecoats.
• Excellent Self-Leveling: Formulated with advanced flow control additives that flatten out overspray during application, significantly reducing orange peel and texture.
• Fast Baking & Rapid Handability: Bake-cures in just 30 minutes at 60°C, allowing you to clear vehicles from the bake booth and move them directly to assembly and polishing.
• Easy Polishing Window: Stays highly receptive to cutting and compounding for several days after curing. This reduces polishing time and makes it incredibly easy to fix minor dust nibs.

Material Structure & Performance Advantages

GD-400's performance relies on its premium polymer structure, which uses high-molecular-weight acrylic resins. This technology ensures the paint film maintains excellent flexibility as it cures, avoiding the brittle finish common with cheap, fast-drying clearcoats:

[ High-Flow Acrylic Resin Molecules ]  ◄── Combined with premium leveling agents
                  │
                  ▼ (Spreads out evenly across the basecoat)[ Flawless Flat Surface Layer ]      ◄── Zero orange peel, high mirror reflection
                  │
                  ▼ (Activated with GD-402 Hardener)[ Flexible Polyurethane Network ]    ◄── Resists stone chips and fine wash scratches

This chemical flexibility provides lasting stone-chip protection and outstanding scratch resistance, keeping a showroom gloss even after hundreds of commercial car washes.

Versatile Workshop Application Scenarios

4. High-End 4S Dealership & Collision Repair

   Accelerate standard panel repairs (fenders, bumpers, hoods) with quick turnarounds, maintaining OEM-level gloss match standards.

2. Custom Car & Tuning Restorations

   The perfect final layer for custom multi-coat jobs, carbon fiber parts, and graphics. It provides a thick, protective shield that easily sands down to a flat, mirror-like finish.

3. Spot Repair & Panel Blending

   Blends smoothly into existing OEM clearcoats, leaving clean, invisible transition lines when repairing localized panel damage.

Step-by-Step Workshop Spray Guide

Step 1: Basecoat Pre-Inspection

Make sure the basecoat color layer has flashed dry according to its specifications. Use a dry tack cloth to gently wipe the area, clearing any settled dust, metallic particles, or paint lint.

Step 2: Mixing & Viscosity Setup

Combine the components in a clean, calibrated mixing cup. Use the standard volumetric mixing ratio: Mixing Ratio=100 Parts GD-400 Clear:50 Parts GD-402 Standard Hardener:20 Parts G-1 ThinnerMixing Ratio=100 Parts GD-400 Clear:50 Parts GD-402 Standard Hardener:20 Parts G-1 Thinner Stir the mixture thoroughly. Check the flow viscosity; it should run at 16 to 18 seconds using a DIN 4 cup at 23°C.

Step 3: Spray Gun & Pressure Tuning

• RP (Reduced Pressure) Guns: 1.3 mm nozzle tip. Set your air inlet pressure to 2.0 - 2.5 Bar.
• HVLP (High Volume Low Pressure) Guns: 1.3 mm nozzle tip. Set your air inlet pressure to 1.8 - 2.0 Bar.

Step 4: Application Technique

Apply 2 to 3 full wet coats, moving at a consistent speed and overlapping your passes by 50%. Keep a distance of 15 to 20 cm from the panel.

• Inter-coat Flash-off: Allow 5 to 10 minutes of flash-off at 23°C between coats.
• Pre-bake flash: Let the final coat sit for 15 to 20 minutes at ambient temperature before baking. This allows solvents to escape and prevents popping in the oven.

Technical Performance Data

Curing & Drying Schedule

Logistics & Standard Packaging Info

• Complete Kit Volume: 8.5 Liters (5.0L Clearcoat Can + 2.5L Activator Can + 1.0L Thinner Can).
• Kit Box Size: 21.3 * 17.4 * 29.7 cm.
• Box Shipping Weight: 8.95 kg.
• Storage Guidelines: Store in a cool, well-ventilated paint mixing room at temperatures between 5°C and 35°C. Keep away from direct sunlight, open flames, and moisture.
• Hardener Care: GD-402 is highly sensitive to atmospheric moisture. Keep the cap tightly sealed immediately after pouring to prevent cloudiness or crystallization.

System Synergy Products (Recommended Add-ons)

        [ YATU Color Paint ] ──► [ GOODING GD-400 Clear ] ──► [ GD-401 Fast Activator ] ──► [ GD-403 Slow Thinner ]         (Standard Solvent/Water)  (Perfect Glass Mirror Finish) (Quick spot repairs)        (Hot climate flow control)

• GOODING GD-401 Fast Hardener: The ideal fast-acting activator for quick spot repairs, panel blending, or spraying in colder climates (under 15°C).
• GOODING GD-403 Slow Hardener: A slow-curing activator designed for complete vehicle resprays, preventing dry spray and overspray rough zones in temperatures above 30°C.
• YATU High-Build Acrylic Primers: High-solid primers that offer exceptional filling performance, ensuring a flat, wave-free substrate before color application.

Frequently Asked Questions (FAQ)

Q1: What causes orange peel, and how does the GD-400 system help prevent it?

A: Orange peel is usually caused by incorrect gun setup, low spray pressure, or using a fast thinner in warm weather. GD-400's advanced self-leveling formulation is designed to flow out and flatten even under less-than-perfect conditions, minimizing texture.

Q2: What is the pot life of the mixture once the hardener is added?

A: With GD-402 Standard Hardener at 23°C, the pot life is 3 hours. If you use GD-401 Fast Hardener, the pot life is reduced to 2 hours. Be sure to clean your spray guns with solvent immediately after use.

Q3: Can I spray GD-400 over waterborne color basecoat systems?

A: Yes. GD-400 is compatible with both traditional solvent-borne and modern waterborne basecoats. Just make sure the waterborne basecoat is completely flashed off and dry before spraying the clearcoat.

Q4: How long should I wait after baking before I can safely sand and polish?

A: After baking at 60°C for 30 minutes, allow the vehicle to cool down to workshop room temperature (approx. 20-30 minutes). Once cooled, the paint film is hard enough to sand out dust nibs and polish to a high gloss.

Q5: Can GD-400 be used on raw carbon fiber panels, and will it turn yellow?

A: Yes. GD-400 works exceptionally well on carbon fiber panels, custom hoods, and spoilers. It contains highly concentrated UV absorbers that act as a shield, preventing both the clearcoat and the underlying carbon fiber epoxy resin from yellowing or cracking under sunlight.

Technical Support & Workshop Trial Program

We offer dedicated technical support to help optimize your workshop's efficiency:

• Free Mixing Guides & Wall Charts: Get laminated mixing ratios and troubleshooting guides to hang in your paint mixing room.
• On-Site Technical Support: For qualified high-volume collision centers and 4S repair networks, our field technicians are available to help optimize spray gun setups, booth bake times, and polishing workflows.
• Trial Evaluation Samples: Contact our sales desk to order a full 8.5L trial kit for your lead painter to test on-site.