Alpha International AS1813 Stainless Steel Single Bowl Undermount Cutout
Description
The Alpha International AS1813 represents a practical, mid-sized stainless steel undermount sink solution for compact kitchen installations and smaller countertop configurations. With outside dimensions of 18.37" x 13.25" and a generous 7" depth, this single bowl sink provides functional workspace without the footprint demands of larger models. For countertop fabricators, the AS1813 offers straightforward installation characteristics—rectangular geometry with zero corner radius creates clean lines that complement contemporary design aesthetics while simplifying CNC programming. This comprehensive DXF template package delivers precision-engineered cutout files verified against Alpha International's factory specifications, ensuring accurate fabrication across all common countertop materials. The template set includes four essential variants covering the full range of undermount installation methods, from flush no-reveal cuts to generous overhang configurations that maximize stone-to-sink support.
Dimensions
- Overall Width
- 18.37"
- Overall Depth
- 13.25"
- Bowl Width
- 16.37"
- Bowl Depth
- 11.25"
Specifications
- Manufacturer
- Alpha International
- Model Number
- AS1813
- Installation Type
- Undermount
- Bowl Configuration
- Single
- Material
- Stainless-Steel
- Min. Cabinet Width
- 23"
- Downloads
- 0
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Alpha International
The Alpha International AS1813 represents a practical, mid-sized stainless steel undermount sink solution for compact kitchen installations and smaller countertop configurations. With outside dimensions of 18.37" x 13.25" and a generous 7" depth, this single bowl sink provides functional workspace without the footprint demands of larger models. For countertop fabricators, the AS1813 offers straightforward installation characteristics—rectangular geometry with zero corner radius creates clean lines that complement contemporary design aesthetics while simplifying CNC programming. This comprehensive DXF template package delivers precision-engineered cutout files verified against Alpha International's factory specifications, ensuring accurate fabrication across all common countertop materials. The template set includes four essential variants covering the full range of undermount installation methods, from flush no-reveal cuts to generous overhang configurations that maximize stone-to-sink support.
Installation Overview
Installing the Alpha International AS1813 undermount sink requires standard undermount techniques adapted to this model's specific dimensions. The 18.37" x 13.25" outside measurement combined with a 16.37" x 11.25" bowl dimension creates a 1" rim all around the perimeter for mounting clip attachment and adhesive application. This template package provides four critical cutout variants: the no-reveal option (16.37" x 11.25") cuts directly to the bowl edge, maximizing the visible bowl opening and creating a flush transition between sink and stone—ideal for design-forward installations where clean lines are paramount. The 1/8" reveal variant (16.12" x 11") is the most commonly specified configuration, creating a subtle visible gap that provides tolerance for sink positioning variations while maintaining a refined aesthetic. The 1/2" overhang option (15.37" x 10.25") delivers substantial stone overlap onto the sink rim, providing maximum support surface for adhesive bonding and mechanical clips—particularly valuable in high-use commercial installations or when working with heavier stone materials. The drop-in variant (18.37" x 13.25") matches the sink's outer dimensions and can be adapted for top-mount installations if project requirements change. The AS1813's moderate size makes it suitable for 24" minimum cabinet width installations, though 27" cabinets provide better clearance for plumbing and waste disposal units. The sink's zero corner radius creates sharp 90-degree interior corners in the countertop cutout, which requires specific tooling considerations but results in contemporary aesthetic that aligns with modern design trends.
CNC Cutting Notes
CNC fabrication of the AS1813 cutout centers on managing the zero corner radius geometry. Unlike radiused sinks that allow smooth tool paths through corners, this rectangular design requires the end mill to plunge and retract at each 90-degree corner or demands specialized corner-cutting techniques. For natural stone (granite, marble), use a 1/4" or 3/8" diameter end mill—smaller tools allow tighter approach to true corner geometry but increase cutting time. Program tool paths with proper corner compensation, typically using circular interpolation at minimum radius based on your tool diameter. In quartz and porcelain materials, the sharp corners present chip-out risk—reduce feed rates approaching corners and consider leaving slightly more stock (0.030-0.040") for hand-finishing with angle grinders and diamond hand pads. The AS1813's modest cutout size (under 200 square inches for most variants) means waste material is easily supported during cutting with standard vacuum or clamp systems. Position supports outside the cut path perimeter, ensuring the waste piece remains stable through the final breakthrough. For the 1/8" and 1/2" reveal variants, the reduced cutout dimensions still provide ample rim area for undermount clip installation—verify clip positioning won't interfere with sink bowl walls, particularly at corners where clearance is tightest. When programming tool paths, account for the sink's 7" depth if countertop material is 3cm or thicker—deeper sinks may require undermount clips with extended reach or alternative adhesive-only installations. Leave 0.020" stock on all visible edges for hand polishing to final dimension. If your CNC uses carbide tooling on quartz or porcelain, inspect tool condition regularly as corner plunges accelerate wear. Some fabricators prefer to rough-cut the rectangular opening with standard radius corners, then use specialized corner-cutting jigs or hand tools to achieve the final zero-radius geometry—while more labor-intensive, this approach can yield superior edge quality in brittle materials.
Material Compatibility
The AS1813 template is engineered for universal compatibility across all standard countertop materials, with the rectangular zero-radius geometry presenting material-specific considerations. Quartz surfaces (Cambria, Caesarstone, Silestone, etc.) handle this cutout well, though the sharp corners require attention to prevent microchipping—use sharp tooling, conservative feed rates in corners, and plan for hand-finishing visible edges to achieve refined appearance. The modest cutout size relative to typical slab dimensions (usually 55-65" wide) means adequate material remains around the sink opening for structural integrity even in 2cm thickness, though 3cm is preferred for visual mass. Natural granite excels with the AS1813 cutout, as granite's crystalline structure tolerates the sharp corners better than engineered materials. Orient high-movement veining or fissures away from corners where stress concentrates. Marble fabrication follows similar protocols but demands more conservative land areas (3" minimum from cutout edge to slab perimeter) due to lower tensile strength—the compact AS1813 cutout works well in marble applications where larger sinks might create structural concerns. Solid surface materials (Corian, Hi-Macs, Staron) are ideal for this template, machining easily with standard wood router bits and allowing perfect zero-radius corners without chipping risk. The rectangular geometry also facilitates seam placement if needed near the sink—perpendicular seams can run through corner areas with proper planning. Porcelain slabs require continuous water cooling and diamond tooling throughout the cut, with the sharp corners demanding careful tool path programming to avoid deflection that could cause edge fracture. For ultra-compact surfaces (Dekton, Neolith), expect accelerated tool wear at corners but excellent structural performance—these materials' extreme hardness makes them well-suited to the sharp corner geometry. The AS1813's 1" rim width accommodates standard undermount clip systems across all material types, though thicker materials (3cm+) may require clips with extended vertical reach to engage the sink rim properly beneath the stone.
Where to Buy
The Alpha International AS1813 is available through professional plumbing supply distributors, fabrication material suppliers, and direct from Alpha International's website and dealer network. As a value-oriented product line, Alpha International sinks often provide cost-effective alternatives to premium brands while maintaining quality construction suitable for residential and light commercial applications. The AS1813 typically retails between $150-300 depending on gauge (18 or 16) and finish options. Professional fabricators can establish accounts with Alpha International distributors for contractor pricing and bulk order discounts—particularly valuable for builders and remodelers specifying sinks across multiple projects. Online retailers including Amazon (Alpha's official storefront), various plumbing e-commerce sites, and specialty kitchen suppliers stock this model with convenient shipping to job sites. The manufacturer's website (alpha-int.com) provides a comprehensive DXF file library including the AS1813, allowing fabricators to download CAD files directly for template verification and CNC programming—this resource is particularly valuable for confirming dimensions before receiving the physical sink. Lead times for Alpha International products are typically shorter than premium brands, often shipping within days of order placement, though availability can vary by finish and gauge specification. When ordering, verify the specific model designation (AS1813 standard vs. AS1813-ADA shallow version) to ensure correct depth specification. Some distributors bundle undermount installation kits with sink purchases, providing clips, adhesive, and support brackets as a complete installation package—these kits can streamline procurement for fabrication shops. For commercial projects requiring multiple units, contact Alpha International directly regarding volume pricing and custom gauge or finish specifications.