Description
Demi bullnose edge profile for 3cm (1-3/16") countertop slabs. Slightly less rounded than half bullnose. Optimized polishing parameters for Granite. Standard polishing sequence for natural granite.
Related Templates
Crescent Edge Profile (Granite) - 2cm+2cm Laminated
Crescent Edge Profile (Marble) - 2cm+2cm Laminated
Crescent Edge Profile (Porcelain) - 2cm+2cm Laminated
Crescent Edge Profile (Quartz (Engineered)) - 2cm+2cm Laminated
Professional countertop fabricators trust the Demi Bullnose Edge Profile (Granite) - 3cm template for delivering consistent demi edge results. The standard dimensions geometry is engineered for direct import into CNC programming software, eliminating manual CAD work. This edge profile performs exceptionally well with quartzite substrates, where precise geometry ensures proper adhesion and finishing. The demi design has become a staple in kitchen installations, offering the visual refinement that designers specify while maintaining the structural requirements that fabricators demand from every project.
Installation Overview
Fabricating the Demi Bullnose Edge Profile (Granite) - 3cm edge starts with proper slab preparation and CNC setup. Secure the countertop blank on the CNC table using vacuum pods or mechanical clamps, ensuring the edge to be profiled extends beyond the table edge sufficiently. Load the DXF template into your CAM software and set the appropriate tool offsets for your specific edge profiling bits. For the initial roughing pass on quartzite, use a feed rate of 40-60 inches per minute with a spindle speed of 4500-6000 RPM. The demi profile geometry requires attention to bit selection, using profiling wheels that match the radius specifications in the template. After roughing, perform a semi-finish pass at 80% depth before the final profile cut. Water flow should be maintained at 2-3 gallons per minute minimum to prevent heat buildup. Hand polishing follows CNC work, progressing through 50, 100, 200, 400, 800, 1500, and 3000 grit pads. Buff with a felt pad and polishing compound for a mirror finish. Seal with an impregnating sealer designed for natural stone.
CNC Cutting Notes
For the Demi Bullnose Edge Profile (Granite) - 3cm profile, set your CNC router spindle speed between 5000-7000 RPM for quartzite substrates. Use a feed rate of 40-60 IPM for roughing passes and reduce to 20-30 IPM for finishing passes. Select a diamond-tipped profile bit matching the template radius specifications. Program the toolpath using climb milling for cleaner cuts on the demi geometry. Maintain coolant flow at 2+ GPM to prevent thermal fracturing. For harder stones like granite, reduce feed rates by 20% and increase water flow. Run a test cut on scrap material to verify the profile matches the DXF template before committing to production stock.
Material Compatibility
The Demi Bullnose Edge Profile (Granite) - 3cm template works exceptionally well with natural granite, providing clean edges that polish to a high gloss. Marble is also compatible, though the softer stone requires reduced feed rates during CNC operations to prevent micro-chipping. Quartzite offers excellent results with this profile, as the hard mineral structure holds fine details well. Engineered quartz composites are ideal substrates, offering consistent material properties that produce predictable results. Soapstone and slate can be profiled using this template with appropriate tooling adjustments. For limestone, use conservative CNC parameters due to the stone's tendency to chip on detailed profiles. Porcelain sintered stone panels require specialized diamond tooling but produce excellent results with the demi geometry.
Where to Buy
Professional fabricators can source quartzite slabs from local stone distributors and wholesale suppliers. Visit SlabWise for template downloads and fabrication resources.