GRABO 90 Degree Seam Setter V2 Right Angle Jig

Precision Right-Angle Seam & Corner Clamp for Stone, Tile & Countertop Fabrication

The GRABO 90 Degree Seam Setter V2 converts any pair of GRABO vacuum tools into a heavy-duty, hands-free right-angle clamping system. Designed specifically for stone fabricators, countertop installers, tile setters, and woodworkers, this precision jig locks two panels together at a true 90-degree angle—allowing a single operator to align, level, and join materials perfectly while adhesives cure without requiring a second person to support the joint.

Engineered for extreme rigidity, six 5mm steel bolts lock the seam setter directly into the built-in metal anchor points on each GRABO unit, while eight 4mm bolts reinforce the main angle joint. The reversible rail architecture allows you to easily invert the hardware to tackle both inside and outside corners using the exact same components. By applying massive vacuum holding force directly to the face of the material rather than pulling on fragile edges, it holds precise right angles that conventional clamps simply cannot achieve.

• Precision 90-Degree Right-Angle Jointing: Locks two material faces firmly at a true 90-degree angle for flawless waterfall edges, mitered aprons, and shower corners.
• Heavy-Duty Direct-Anchor Bolt Lock: Six 5mm bolts fasten the jig directly into the metal anchor points on each GRABO base plate, complemented by eight 4mm joint-locking bolts for zero-flex stability.
• Reversible Inside & Outside Corner Rails: Modular rail layout easily inverts, enabling you to set inside corners and outside miter joints using the same hardware set.
• Single-Operator Hands-Free Assembly: Eliminates the need for a second installer to hold heavy slabs or panels while epoxies, silicones, or adhesives set.
• Full Face-Grip Vacuum Holding Power: Applies vacuum suction across the panel face rather than applying pressure to delicate edges, preventing chipping and material breakage on fragile stone or porcelain.

Versatile Applications

• Stone & Quartz Countertops: Seamlessly join mitered waterfall edges, laminated aprons, and stone seams on granite, marble, quartz, and porcelain slabs.
• Tile & Shower Enclosures: Align and set large-format porcelain tile wall corners and glass/tile shower enclosures at exact right angles.
• Woodworking & Metal Fabrication: Clamp dense sheet materials, plywood, and metal panels for glue-ups, fabrication, and corner fastening.

Specifications & Features

What's Included in the Box

• 1× GRABO 90 Degree Seam Setter V2 Base & Rail System
• 6× 5mm Anchor Plate Mounting Bolts
• 8× 4mm Angle Joint Locking Bolts
• User Operational Guide

GRABO 90 Degree Seam Setter V2 Specifications

FAQs

• Are GRABO tools included with this seam setter?

  No. This product is an accessory right-angle seam setter jig. GRABO vacuum tools are sold separately (two GRABO units are required to operate the seam setter).

• Can I set both inside and outside 90-degree corners with this jig?

  Yes. The V2 hardware features reversible rails that easily invert, allowing you to set inside wall corners and outside mitered edges using the exact same components.

• How does this jig fasten to the GRABO tools?

  The seam setter secures using six 5mm bolts that thread directly into the built-in metal corner anchor points on each GRABO base unit, ensuring rigid alignment without slippage.

• Is this seam setter compatible with all GRABO tools?

  This accessory works with all official GRABO tool models equipped with corner anchor points. Please note that accessories manufactured or sold for GRABO tools are not compatible with the DeWalt GRABO model.