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To achieve precise line spacing when checkering various surfaces such as backstraps, triggerguards, grip frames, ribs and hammer spurs; for an enhanced gripping surface, one must adhere to a particular procedure. The key is to make finer cuts to achieve a pleasing matting effect that reduces glare and light distortion. The process is similar to that of wood checkering. Begin by laying out your master lines or use an external guide like our .45 Checkering Guide. Afterward, establish the pattern by moving the file a few teeth each time while using the previously laid-out lines as a guide. When the pattern is fully established, finalize by bringing it to the desired depth with a 60° needle file.