1 1

TrueFill Premium Body Filler

TrueFill Premium Body Filler

$63.99
$63.99 $63.99
Sale Sold out
Shipping calculated at checkout.

TrueFill Premium Body Filler by Alpha Automotive Paints – Professional-Grade Surface Finishing Putty

High-Performance, Lightweight Polyester Filler for Superior Automotive Repairs

TrueFill Premium Body Filler by Alpha Automotive Paints is a professional-grade polyester-based surface finishing putty designed for high-quality automotive repairs. Engineered for exceptional adhesion and effortless application, this lightweight filler ensures smooth, flawless results across various surfaces. Whether you're working on bare steel, galvanized steel, aluminum, or composite materials, TrueFill provides a seamless, stress-free repair process with excellent durability.

Key Features & Benefits

✅ Exceptional Adhesion – Bonds effectively with bare metal, galvanized steel, aluminum, fiberglass, composite materials, and even acrylic or epoxy primers.
✅ Effortless Application – Spreads easily and sands down smoothly, ensuring a perfect surface finish with minimal effort.
✅ Lightweight Formula – Reduces stress on the repair area, making it ideal for both cosmetic and structural applications.
✅ Multicoat Compatibility – Works seamlessly with epoxy primers and old paint finishes, making it a versatile choice for refinishing projects.
✅ Quick Drying Time – Cures in 30-35 minutes at 20°C (65% RH), allowing for fast and efficient workflow.
✅ Sands Smoothly – Easily refinish the surface using P100-P120 grit for coarse sanding and P120-P280 grit for final finishing.
✅ IR Drying Compatible – Accelerate drying times with infrared curing (9-11 minutes at max 80°C, with a 5-minute wait before IR application).
✅ Controlled Application – Should be applied in several thin layers, with each layer properly cured before the next (max thickness: 3mm).
✅ Pre-Mixed Hardener Included – Optimized for a 100:2 mixing ratio for consistent results and ease of use.

How to Use TrueFill Premium Body Filler

  1. Surface Preparation – Sand and clean the substrate thoroughly. Remove any old coatings before application. For best results, apply over an epoxy primer (avoid reactive primers).
  2. Mixing – Stir the filler thoroughly before and after adding the included TrueFill Hardener (2% mix ratio).
  3. Application – Apply thin coats, curing each layer before applying the next. Do not exceed 3mm thickness.
  4. Drying Time – Allow 30-35 minutes for drying at 20°C with 65% relative humidity.
  5. Sanding & Finishing – Start with P100-P120 grit (coarse sanding), then refine with P120-P280 grit for a smooth, professional finish.

Why Choose TrueFill Premium Body Filler?

  • Professional-Grade Quality – Trusted by automotive professionals and DIY enthusiasts for high-precision repairs.
  • Versatile Use – Works on a wide range of surfaces, making it ideal for automotive bodywork, fiberglass repair, and composite finishing.
  • Time-Saving Formula – Rapid drying and easy sanding mean you can complete repairs faster, with less effort and better results.
  • Long-Lasting Durability – Provides a smooth, stable, and crack-resistant surface that holds up under paint.

Frequently Asked Questions (FAQs)

1. Can I use TrueFill Body Filler on aluminum and fiberglass?

Yes! TrueFill adheres exceptionally well to aluminum, fiberglass, and composite materials, making it a versatile solution for various repair jobs.

2. How thick can I apply the filler?

For best results, apply in thin layers, allowing each coat to cure properly before adding more. Do not exceed 3mm in total thickness.

3. What is the best sanding grit to use?

  • For coarse sanding, use P100-P120 grit.
  • For final finishing, refine with P120-P280 grit for a smooth, paint-ready surface.

4. Can I speed up the drying time?

Yes! Infrared drying (IR) is compatible with TrueFill. After a 5-minute wait, IR drying can be applied for 9-11 minutes at a maximum of 80°C.

5. Does TrueFill come with a hardener?

Yes! The TrueFill Hardener is included and should be mixed at a 100:2 ratio for optimal results.

View full details
In Stock Ready To Ship

Shipping Policy

We ship from our warehouse in Antigo, Wisconsin. Processing under normal circumstances (not backordered or during sale / high order times) is 1-2 business days.

We ship using UPS or USPS (selected by customers at checkout).

For shipping-related issues, start with our Claims & Returns form. If your order included Order Protection and the issue is loss, theft, carrier damage, or misdelivery in transit, use the Order Protection claims portal from your confirmation email first.

Warranty

All Linear Blocking Tools are backed by a Limited Lifetime Warranty. Coverage includes product failures caused by normal use and normal operating conditions. Damage caused by misuse, abuse, accidents, unauthorized modification, improper storage, or cosmetic wear is not covered.

Please review our Warranty Policy for full coverage details. To start a warranty claim, use our Claims & Returns form.

Financing

 

That's right! Linear now offers 0% Financing to most applications! Zero hit on your credit score and no risk! Buy Now...Pay later!

How it works

  1. Add items to your cart (or shopping bag).
  2. Check out with Shop Pay.
  3. Choose the option to pay in installments.

Your first payment is due at checkout. The remaining payments are automatically charged to your card saved on Shop Pay based on the payment plan you chose. Don't worry, you'll get an email reminder before each payment to remind you.

Buy now, pay later with Shop Pay

You can add the buy now, pay later with Shop Pay messaging in your online store banner, and the following subheadline:

When you choose Shop Pay at checkout, you can split your purchase into flexible installment payments.*

Quick approval, flexible payments, no late fees

You can create icons for quick approval, flexible payments and no late fees, and use the approved text.

 

 

Returns / Refunds

Returns are accepted within 30 days of delivery for unused items in original condition with original packaging and proof of purchase.

Custom Color Basecoats, OEMatch Basecoats, mixed paints, opened or used items, final-sale items, digital products, and gift cards are not returnable.

Please review our Return & Refund Policy for full details. To request a return or report a wrong or missing item, use our Claims & Returns form.

Why Linear?

Why Polycarbonate Beats Foam & Rubber

Foam and rubber blocks compress under pressure, masking imperfections you'll only see after paint. Linear's CNC-machined polycarbonate base is harder than the surface you're sanding — it maps every high and low with 100% accuracy.

"Most blocks will absolutely lie to you — they'll tell you it's straight but it's really not. With Linear blocks, I promise you they will not lie to you." — Ryan Evans, Count's Kustoms

Patented Vertebrae Design

Precision-cut rings along the polycarbonate spine control flex and distribute pressure evenly across the entire sanding surface. All edges are routed and radiused — no sharp corners to gouge your work. Place your hands anywhere on the block and pressure transfers uniformly to the base.

Faster Results, Less Effort

Use light pressure — three fingers, let the block do the work. The rigid base cuts efficiently without the brute force required by old-school blocks.

"You're actually doing it twice as fast but not putting in nearly the effort. It makes the job easier, faster, and a thousand times better." — Ryan Evans, Count's Kustoms

Rigid vs Flex vs Ultra Flex — Quick Guide

Rigid: Flat panels only — hoods, roofs, deck lids. Also great for rough-cutting body filler.

Flex: The everyday workhorse. Follows gentle curves while keeping a true surface. The 18" flex is the most used block on any car.

Ultra Flex: Compound curves, rolled fenders, dramatic body lines. Longer blocks = more flex. The 32" wraps fenders that no other block can follow.

Read the full block selection guide →

Ryan Evans Unboxes Linear Blocks

How to Clean Your Linear Blocks

A quick clean extends the life of your blocks and keeps them cutting flat.