Key benefits — why you need this tool Improved cutting precision: Precision-fit joint technology produces tighter seams for door and window frames and enables accurate 45° miter cuts for clean, professional-looking joints. Long-lasting, stable performance: Wear-resistant construction and a deformation-resistant design with a reinforced insulating plate maintain alignment and accuracy over repeated use. Fast, secure setup: A rigid clamping frame plus a quick-positioning mechanism and built-in calibration marks let you set and lock cuts quickly without slipping, improving safety and repeatability. Material and method flexibility: Designed for wood, PVC and aluminum; works with manual or electric cutting tools to support a wide range of renovation and installation tasks. What it does (function and performance) Ensures consistent, tight-fitting joints for door and window frames by aligning workpieces precisely before cutting. Facilitates reliable 45° angle cuts with high repeatability, reducing rework and material waste. Resists wear and deformation so alignment stays true over many jobs, preserving cut quality and reducing downtime. Integrated calibration marks and a quick-positioning system streamline setup times and reduce user error. Compatibility and construction details Materials supported: wood, PVC, aluminum. Operation modes: compatible with manual hand tools and electric cutting tools. Durability features: wear-resistant components and a reinforced insulating plate to prevent deformation under load. Safety and control: stable clamping construction prevents slippage during cutting and enhances operator safety. Practical applications (real-world use scenarios) Window installation: Accurately miter and join frame profiles made of wood, PVC or aluminum for tight, weather-tight window frames. Door frame fitting and trim: Produce precise 45° cuts for clean corner joints on interior and exterior door trims. Renovation and finishing tasks: Rapidly set up repeatable cuts during repair work, sill replacements, or trim upgrades using either hand or power tools. Why it stands out Focus on repeatable precision: Precision-fit connections and calibration marks translate skilled results across multiple cuts and users. Built for regular jobsite use: Wear-resistant materials and deformation controls extend tool life and reduce maintenance. Versatile across materials and tools: One solution for wood, PVC and aluminum that works with manual or electric cutters, reducing the need for multiple jigs. Use guidance Clamp workpieces securely and align using the integrated calibration marks before making 45° or straight cuts. Suitable for both single-piece precision work and batch cuts where consistent angles and seams are required. Clean and inspect the reinforced insulating plate and clamps periodically to maintain alignment and prolong service life.