Best Plastic Putty Knives of 2025

The Bates- Putty Knife Set, 6 Pack is a great alternative to metal knife options. The set includes six different sizes ranging from 1.5" to 6" inches, making it easy to find the perfect size for your needs. The plastic scrapers are flexible and solvent resistant, making them perfect for spackling, patching, and painting. The Bates Putty Knifes set is a great addition to any DIY toolkit.

The Red Devil 4718 3-Piece Plastic Knife Set is an economical alternative to metal knife options, providing strength and flexibility. This set includes 1 1/2" Putty Knife, 3" Spreader & 6" Taping Knife, perfect for repairs and projects. Disposable once the project is complete, this set is a great value.

The ALLWAY SD3 3-Piece Celcon Plastic Detail Putty Knife Set is an ideal tool for spreading joint compound, spackle, or adhesive. The multipurpose set includes 3/8", 5/8", and 1" putty knives which are durable due to their CELCON construction. Additionally, the knives are solvent-proof and disposable. The lightweight design and comfortable grip make it easy to use.

The Warner Plastic Putty Knives come in a convenient 3-pack, featuring sizes of 1-1/2", 3", and 6". These tools are designed to help you tackle various tasks with ease, whether you're spreading, smoothing, or scraping. Made from durable plastic, they offer both strength and flexibility, making them ideal for applying putty or paint. With the Warner Way philosophy, you can trust that these tools are built to last, thanks to the skilled team behind their production. Enjoy the convenience of having multiple sizes at your disposal for any project.

This 6 Pack Putty Knife Set includes six different sizes of flexible plastic paint scraper tools, ranging from 1.5" to 8" inches, making it convenient for both professionals and DIYers. The holes in each handle make for easy storage on any nail or pegboard. Made of 100% polypropylene, the putty knife is solvent-proof and durable. It's perfect for spackling, patching, and painting and is an excellent alternative to metal knife options.

The HARFINGTON Putty Knife Set offers a reliable solution for various tasks around your home. With a 3-inch wide blade made from durable plastic, these knives resist rust and corrosion, ensuring they last through many projects. The thin edge design allows you to achieve precise scraping and smoothing, giving you better control during application. Their flexible nature makes it easy to spread putty or other materials with ease. Whether you're filling gaps or patching up walls, these versatile tools are a must-have for your DIY toolkit.

The Lusofie Putty Knife Set includes five flexible plastic knives that are perfect for various DIY projects. Their adaptable design allows you to tackle tasks like drywall taping, wall painting, and caulking with ease, even on uneven surfaces. Made from durable materials, these knives can withstand frequent use without breaking. You’ll appreciate the ergonomic handles, which provide a comfortable grip, making long projects much more manageable. Plus, cleaning up is a breeze—just rinse them under water after use to prepare them for your next job.

The Red Devil Putty Knife is designed for all your putty application needs. Its lightweight and flexible plastic construction makes it easy to handle, allowing you to maneuver into tight spots effortlessly. This tool is durable and built to withstand various tasks, ensuring you can rely on it for multiple projects. Plus, the solvent-resistant plastic means it can handle different materials without deteriorating. With its disposable nature, you can use it for quick jobs without worrying about cleanup, making it a convenient choice for both professionals and DIY enthusiasts.

The Warner 6" Flex Putty Knife is a high-quality tool from Warner Manufacturing. This putty knife is designed with flexibility in mind, making it easy to use for a variety of tasks. The Warner Way ensures that this knife is SMARTER, STRONGER, and BETTER than other options on the market. The skilled team at Warner Manufacturing takes pride in building quality into every product, ensuring that this putty knife is made to last. With its 6" size, it is perfect for smoothing and spreading putty or other materials. The flexibility of this knife allows for easy maneuverability, making it simple to achieve a smooth and even finish. The Warner 6" Flex Putty Knife is a must-have tool for anyone working on home improvement or DIY projects.

The LifHap Putty Knife Set includes three versatile sizes—1.5", 3", and 6"—made from durable plastic. These knives are great for various tasks like spackling, patching, and painting, providing an excellent alternative to metal options. If you're preparing homemade tamales, these tools will help you spread dough easily and efficiently. Additionally, carpenters and handymen will appreciate their suitability for slab and tile jobs, making projects more manageable. Lightweight and easy to handle, this set is also perfect for artists working on large canvases or simple crafts, allowing for seamless application of different mediums.