The Difference Between Taping and Putty Knives

Taping knives and putty knives may look similar, but both tools have different purposes. Using them interchangeably is possible. However, in many cases, it’s wise to utilize them for their intended use. To get the most out of both tools, read on to learn the difference between taping and putty knives.

Taping Knife

Taping knives, also known as joint knives, come in a few different sizes. The taping knife has a wide blade intended for spreading the joint compound across the seams. Use the tool to spread the mud over nails and screw indents in new drywall applications.

The different sizes of the blade range from 6 to 12 inches. Use the smaller size of the knife in the beginning stages of your project. The 6-inch taping knife is referred to as a joint knife. The smaller size makes it easier for you to get inside the tighter and smaller areas.

Aside from applying mud, you can also use the knife for laying tape and finishing. Manufacturers make the blade out of carbon steel, stainless steel, and blue steel. Stainless steel is the most common.

Putty Knife

Putty knives come in several designs. The structure is the same for the most part, but there are distinctions for every putty knife. A flat-edged blade putty knife is one of the most common. The edge is a singular line without any features, making it a good scraper and spreader.

A chiseled edge blade is at an angle, which allows its tip to press diagonally instead of flat and straight. A putty knife is stiffer than a joint knife. Similar to a taping knife, smaller putty knives work better in tight corners.

You use the wider versions for large walls and ceilings. Putty knives are also more rigid than taping knives. The hard edges make scraping away old paint easier.

Intended Use

Because taping knives are more flexible, they ensure you spread the joint compound smoothly. Use the taping knives for a finished product when applying drywall. Use the knife to eliminate any bumps, bubbles, or uneven surfaces.

Putty knives are smaller, stiffer, and better for scraping away old drywall, wallpaper, and paint. Aside from drywall, you can also use putty knives to apply and spread spackle along a wall. It’s like applying drywall compound. Spackle is just a little thicker.

You need both of these drywall finishing blades for all your developer projects. We supply several styles and options here at Timothy’s Toolbox.

We pride ourselves on being knowledgeable about the purpose and benefits of all drywall tools. The difference between taping and putty knives is just one example. For more information, visit our website.