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The first consideration when purchasing is the material. Most high-quality bars are made from kiln-dried wood, typically pine or fir. Kiln-drying is crucial because it removes moisture, preventing the wood from warping or twisting over time. For larger works, some artists opt for "heavy-duty" bars or those reinforced with aluminum to ensure the frame remains rigid under the significant tension of a large canvas. Profiles and Dimensions
While most art supply stores carry standard lengths (from 8 inches to 60+ inches), buying stretcher bars often allows for modularity. Since they are usually sold in pairs, you can mix and match sizes—for example, buying one pair of 20-inch bars and one pair of 30-inch bars to create a 20x30 frame. For non-traditional dimensions, custom-cut bars are available through specialty woodworkers, ensuring your support matches your specific vision. Features to Look For buy stretcher bars
These are traditional and often required if you plan on placing the finished canvas into a decorative frame. The first consideration when purchasing is the material
When shopping, look for bars with a . A beveled or "sloped" profile ensures that the canvas does not touch the wood until the very edge of the frame, preventing "ghost lines" or indentations from appearing on the front of your painting. Additionally, professional-grade bars feature tongue-and-groove corners , which allow you to assemble the frame without glue or nails. This "keyed" system is vital; it allows you to insert small wooden wedges (keys) into the corners later to re-tighten the canvas if it sags due to humidity. Conclusion For larger works, some artists opt for "heavy-duty"
Stretcher bars come in various "profiles," which refers to the depth of the bar (how far it sticks out from the wall).