Description
Granite remains the workhorse of the natural stone countertop industry, and this eased/straight edge template for 2cm granite slabs provides the foundational CNC parameters that most fabrication shops rely on daily. The 3/4-inch single-slab profile is commonly used for bathroom vanities, bar tops, and residential applications where a slimmer edge appearance is desired. Granite's mineral composition of feldspar, quartz, and mica responds predictably to the standard polishing sequence specified here, beginning with a 20mm roughing finger bit at 3500 RPM and progressing through 50 grit metal bond up to 3000 grit resin before the final buff at 4000 RPM. The eased top corner removes the sharp 90-degree intersection with a subtle chamfer that prevents chipping during stone handling and installation.
Related Templates
Eased/Straight Edge Profile (Granite) - 2cm+2cm Laminated
Eased/Straight Edge Profile (Marble) - 2cm+2cm Laminated
Eased/Straight Edge Profile (Porcelain) - 2cm+2cm Laminated
Eased/Straight Edge Profile (Quartz (Engineered)) - 2cm+2cm Laminated
Granite remains the workhorse of the natural stone countertop industry, and this eased/straight edge template for 2cm granite slabs provides the foundational CNC parameters that most fabrication shops rely on daily. The 3/4-inch single-slab profile is commonly used for bathroom vanities, bar tops, and residential applications where a slimmer edge appearance is desired. Granite's mineral composition of feldspar, quartz, and mica responds predictably to the standard polishing sequence specified here, beginning with a 20mm roughing finger bit at 3500 RPM and progressing through 50 grit metal bond up to 3000 grit resin before the final buff at 4000 RPM. The eased top corner removes the sharp 90-degree intersection with a subtle chamfer that prevents chipping during stone handling and installation.
Installation Overview
Fabricating a 2cm eased/straight edge on granite is one of the most straightforward edge operations in stone work. Begin by verifying the slab thickness is consistent along the edge to be profiled, as natural granite can vary by up to 2mm across a slab. Secure the piece on the CNC bed with vacuum pods positioned to support the edge zone without obstructing the tool path. The 20mm roughing finger bit at 3500 RPM removes material to establish the eased profile geometry in one or two passes depending on the granite hardness. Feed at 50-80 IPM for standard granites, reducing to 40-60 IPM for harder varieties like Absolute Black or Blue Pearl. Begin polishing at 50 grit metal bond at 2800 RPM and work through the full eight-position sequence to the buff pad at 4000 RPM. Each polishing pad should remove the scratch pattern of the previous grit before advancing. Granite is forgiving enough that minor speed or feed variations rarely cause catastrophic problems, but consistent parameters produce the best edge quality. After polishing, apply an impregnating sealer to the exposed edge, as the cut surface is more porous than the factory-polished face and vulnerable to staining from cooking oils and acidic liquids. Allow the sealer to cure fully before delivering the countertop to the job site.
CNC Cutting Notes
Granite is the most predictable natural stone for CNC edge profiling. Set roughing at 3500 RPM with 50-80 IPM feed using the 20mm finger bit. Standard depth of cut is 0.050-0.070 inches per pass. The polishing sequence from 50 grit at 2800 RPM to buff at 4000 RPM should run at 35-50 IPM with consistent water flow. Granite's interlocking crystal structure provides clean cutting with minimal chipping when tooling is sharp. Replace the roughing bit when edge quality starts to degrade or when you notice increased vibration. For dark granites, inspect the edge between polishing steps under strong side lighting to verify that each grit is fully removing the previous scratch pattern.
Material Compatibility
This template is calibrated for the broad category of natural granite, which encompasses hundreds of commercial varieties with hardness ratings between 6 and 7 on the Mohs scale. Standard granites like Giallo Ornamental, Santa Cecilia, and New Venetian Gold polish easily at these parameters. Harder granites such as Absolute Black, Uba Tuba, and Black Galaxy may benefit from slightly reduced feed rates during roughing. Lighter-colored granites with large feldspar crystals like White Ice or Alaska White are softer and can tolerate faster feeds. Exotic granites with mixed mineral compositions should be test-cut on a sample piece before running the full edge.
Where to Buy
Granite slabs in 2cm thickness are widely available from distributors including MSI, Arizona Tile, Bedrosians, and independent stone yards throughout the country. Most suppliers stock dozens of popular colors in 2cm for immediate pickup or delivery.