3M Bondo Plastic Spreaders 3-Piece Set, 4-Pack — 3 Sizes for Mixing & Smoothing Filler

The 3M Bondo 357 Plastic Spreaders are a three-size set of reusable plastic tools made to mix, apply and shape filler, putty, glaze, spackle or caulk for fast, consistent results.

These Bondo spreaders are built for automotive and general repair work where precise, repeatable application matters. Molded from durable yet flexible plastic, each pack includes three different widths so you can pick the best tool for a narrow seam, a medium patch or a broad surface. The thin, clean leading edge helps shape material evenly and reduces finishing time, while the single-piece construction wipes clean quickly for repeated use.

How do these spreaders make filler application easier?

The spreaders are designed to give controlled pressure and a smooth edge for shaping filler, reducing excess material and the need for repeated sanding. Flexibility lets you follow curved panels without lifting or gouging, and having three sizes on hand shortens prep time because you can switch tools instead of improvising.

• Three widths for narrow, medium, and wide coverage
• Thin leading edge produces a uniform feathered finish
• Flexible plastic conforms to curves while retaining leverage
• One-piece design prevents seams that trap material

Can these spreaders handle both mixing and application tasks?

Yes — each spreader works well for mixing filler and for applying it to the repair area. The flat faces provide ample surface to blend hardener and filler, and the same tool can then be used to lay material down and shape it, saving time and reducing waste.

• Flat face for efficient mixing and scraping from containers
• Clean edge for transferring and smoothing compound
• Reusable construction reduces the number of disposable tools needed

What cleaning and maintenance keep these spreaders reusable?

Because the spreaders are a single molded piece with no joints, cured residue is less likely to collect in crevices, making cleanup straightforward. A quick wipe with a solvent such as acetone removes most uncured filler; thorough cleaning after use helps the tools stay ready for the next job.

• Single-piece plastic avoids seams that trap material
• Wipe with acetone or an appropriate solvent before material cures
• Store flat to avoid warping and extend tool life

How do I choose which of the three sizes to use?

Select the spreader width based on the area and the amount of material you need to move. Use the narrowest spreader for tight seams and detail work, the medium for panel patches, and the widest for larger surface fills or feathering edges prior to sanding.

• Narrow: precise control for seams and small holes
• Medium: common repairs and general-purpose application
• Wide: broad coverage and final smoothing before sanding

Who is this for? The 3M Bondo 357 Plastic Spreaders suit DIYers, hobbyists, collision repair technicians and professional tradespeople who apply automotive fillers, glazes or general-purpose compounds. If you value tools that are simple to clean, reusable and available in multiple sizes to match different tasks, this three-size spreader pack helps streamline mixing, applying and finishing without resorting to improvised blades or frequent disposables.

Features:

• Specifically shaped for filler, putty, spackle, caulk and glaze work
• Three sizes included to match different repair needs
• Flexible plastic construction for use on curved and flat surfaces
• Thin, clean edge for better control and smoother finishes
• Reusable and easy to clean with acetone, saving time and cost