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Bondo Hardener Blue .75 oz is a blue cream color hardener designed to be mixed with body filler. The blue cream color provides a color change when mixed with filler, so installers can visually confirm the hardener is blended throughout the filler before application. This helps support consistent curing across the repair area, which matters when working time and sanding behavior need to stay predictable from job to job. The product belongs to the Body Filler product class in the Adhesives and Caulks, Wood Putty & Fillers category, so it fits into workflows that already rely on filler-based repair systems. The .75 oz size gives a controlled quantity for small to mid-size filler batches, helping reduce waste when mixing for spot repairs or detailed work. The hardener is identified by manufacturer part number 00076308009137, which helps match it precisely within existing Bondo Mar-Hyde and 3M product setups.
This blue cream color hardener is designed to be mixed with filler, so it functions as the curing component in a typical Bondo-style system. When combined, the blue color provides a color change that visually confirms the filler and hardener are blended together. This visible change is useful during mixing and application because it helps installers read the mix quality at a glance, rather than relying only on timing or guesswork. In practice, this supports more uniform set characteristics across the repair surface, which is important when scheduling sanding and shaping steps. The .75 oz volume supports measured dispensing into filler portions sized for automotive, woodworking, or similar body filler tasks that align with the Body Filler product class.
This Bondo Mar-Hyde product is defined as Bondo Hardener - Blue, .75 oz and is classified as a Body Filler item within the Adhesives and Caulks, Wood Putty & Fillers category. That positioning means it is intended for systems that rely on body filler-style materials in repair and surface preparation workflows. Because it is specifically described as a hardener to be mixed with filler, it fits anywhere a two-part filler process is required, whether the filler is used on automotive panels, wood surfaces, or similar substrates suited to body filler. The blue cream color helps technicians see the hardener presence throughout the filler bead or spread, which supports visual control when working across seams, edges, or shaped profiles that depend on even curing.
The web description specifies that this blue cream color hardener provides a color change when mixed with filler, and that single detail carries practical benefits across the repair sequence. During mixing, the changing color gives immediate feedback that the hardener is dispersing through the filler, which helps installers align mixing time and motion with product behavior. As the batch is applied, the visible tone shows whether any sections appear under-mixed, guiding the user to remix or adjust the material before it sets. This stronger visual contrast can be particularly helpful under shop lighting or in field conditions where subtle color differences in plain filler are harder to read. Combined with the .75 oz quantity, which supports proportioned mixes sized to specific tasks, the color change characteristic helps reduce the chance of uneven cure patterns that can affect sanding, feathering, or finishing operations tied to the Body Filler class.
Bondo Hardener Blue .75 oz is a blue cream color hardener in the Body Filler product class, so it serves as the curing component when mixed with compatible filler materials.
The blue cream color provides a color change when mixed with filler, giving a clear visual indication that the hardener is blended through the filler before application.
The product is specified at .75 oz, offering a controlled quantity of hardener suitable for small to mid-size filler batches in typical repair workflows.
This hardener is listed in the Adhesives and Caulks, Wood Putty & Fillers category and classified under the Body Filler product class for inventory and planning.
The hardener is branded Bondo Mar-Hyde with manufacturer part number 00076308009137 and SAP description 3M BONDO HARDENER, .75OZ, BLUE.
The color change when mixed with filler helps achieve uniform blending, which supports more predictable curing behavior and timing across the filled area.
Bondo Hardener Blue .75 oz from Bondo Mar-Hyde provides a blue cream color that changes when mixed with filler, giving visual confirmation of blend quality. The .75 oz size supports portioned batches that align with targeted repairs. Classified as a Body Filler product in the Adhesives and Caulks, Wood Putty & Fillers category, it fits directly into filler-based repair systems that rely on dependable curing behavior. The precise identification as 00076308009137 with the SAP description 3M BONDO HARDENER, .75OZ, BLUE makes it straightforward to specify and reorder through Wurth Baer Supply for ongoing shop or field work.
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