STI Grinding & Surface Preparation
STI Grinding & Surface Preparation. Find STI metal-bond diamonds, removal tools, cup wheels and mounting plates for concrete surface preparation. Choose tooling around the slab, coating and machine connection to create a consistent starting point for the next floor finish.
Looking for other equipment and supplies? Browse all four STI product collections.
Categories
- Metal-Bond Diamonds & Grinding Cups: Compare surface prep tools, bar and round segments, Daisy tools, Red Traps and cup wheels.
- Coating Removal & Specialty Prep Tools: Browse PCD tools, carbide cutters, EG removal tools, Perfect 2 tools and bush hammers.
- Tool Plates, Drivers & Mounting Hardware: Complete the tooling setup with the correct Prep/Master plate, edge plate, adapter or mounting hardware.
Metal-Bond Diamonds & Grinding Cups
Compare surface prep tools, bar and round segments, Daisy tools, Red Traps and cup wheels. Tool selection depends on concrete hardness, the required cut and the machine connection.
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Diamond Tooling, Equipment & Instruments
STI #0 Surface Prep Tool
- Metal-bond surface prep tool for concrete
- Also known as the 3SEG Oval Tool
- Removes carpet glue, mastic, adhesives, thin-set, mortar residue, and epoxy coatings up to ~4mm
- Levels surface inequalities/high spots of about ±4mm
- Oval, three-segment design for a consistent finish
- Leaves an 80-grit-sandpaper style profile
- Patented EG attachment for Prep/Master® machines
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Diamond Tooling, Equipment & Instruments
STI #00 Surface Prep Tool
- Combination PCD + metal-bond construction for aggressive surface preparation
- Removes carpet glue, mastic, adhesives, thin-set, mortar residue, and epoxy coatings up to ~4mm
- Levels surface irregularities/high spots of approximately ±4mm
- Leaves a rough profile with grooves up to 1mm deep
- Patented EG attachment for all Prep/Master® floor grinders
- Directional tooling requiring matched #00R and #00L sets
- Dry use only; dust collection required
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Diamond Tooling, Equipment & Instruments
STI 10 Seg Diamond Segments
- Metal-bond diamond grinding tool with a 10-segment design.
- Designed for grinding, leveling, and profiling concrete floors.
- Ideal for surface preparation before coatings or polishing.
- Removes minor high spots and opens the concrete surface.
- Patented EG Quick Change attachment for STI Prep/Master® machines.
- Available in multiple bond hardnesses and grit sizes.
- Soft bond recommended for hard concrete; hard bond for soft concrete.
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Diamond Tooling, Equipment & Instruments
STI 8 Segment Daisy’s
- Metal-bond diamond tool with an 8-segment daisy pattern.
- Designed for grinding, leveling, and profiling concrete floors.
- Provides smooth, even, and consistent surface coverage.
- Ideal for surface preparation before coatings or polishing.
- Suitable for polishing preparation on concrete, granite, and terrazzo.
- Manufactured with sintered diamond technology for smooth cutting performance.
- Patented EG Quick Change attachment for STI Prep/Master® machines.
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Diamond Tooling, Equipment & Instruments
STI Dual Segment Red Traps
- Designed exclusively for Prep/Master® Junior grinders.
- Fast-cutting dual-segment metal-bond diamond tool.
- Removes epoxy, adhesives, thin-set, and cure-and-seal coatings.
- Excellent for grinding, leveling, and profiling concrete surfaces.
- Ideal for preparing hard-troweled concrete floors.
- Available only in 30 Grit Soft Bond.
- Features STI’s EG Quick Change attachment for fast installation.
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Diamond Tooling, Equipment & Instruments
STI Double Bar Prep Tool
- Two bar-shaped metal-bond diamond segments
- Designed for grinding and preparing concrete surfaces
- Ideal for surface profiling before coatings or polishing
- Suitable for the metal-bond grinding stages of surface preparation
- Compatible with planetary grinders, including imported machines
- Available in soft, medium, and hard bond options
- 30-grit configuration for efficient material removal
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Diamond Tooling, Equipment & Instruments
STI Double Round Prep Tool
- Two round metal-bond diamond grinding segments
- Designed for grinding and preparing concrete surfaces
- Greater surface contact and coverage than single-round tooling
- Ideal for surface profiling before coatings or polishing
- Compatible with planetary grinders, including imported machines
- Available in soft, medium, and hard bond options
- Grit options: 16, 30, 60, and 120
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Diamond Tooling, Equipment & Instruments
STI Single Bar Prep Tool
- Single bar metal-bond diamond grinding segment
- Designed for grinding and preparing concrete surfaces
- Ideal for surface profiling before coatings or polishing
- Suitable for the metal-bond grinding stages of surface preparation
- Compatible with planetary grinders, including imported machines
- Available in soft and hard bond options
- 30-grit configuration for efficient material removal
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Diamond Tooling, Equipment & Instruments
STI Single Round Prep Tool
- Single round metal-bond diamond grinding tool
- Designed for grinding and preparing concrete surfaces
- Ideal for surface profiling before coatings, overlays, or polishing
- Compatible with imported (non-STI) planetary grinders
- Available in soft, medium, and hard bond options
- Grit options: 16, 30, 60, and 120
- Coarse grits for rapid stock removal and leveling; finer grits for polishing preparation
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Diamond Tooling, Equipment & Instruments
STI Turbo Cups
- Aggressive turbo segment metal-bond diamond cup wheel.
- Ideal for concrete and terrazzo grinding, leveling, and surface preparation.
- Perfect for first cuts on new epoxy and Portland terrazzo.
- Suitable for closing cuts on new or existing terrazzo before polishing.
- Durable 3-inch brazed/metal-bond diamond wheel.
- Designed for both wet and dry applications.
- Available in 16, 24, 40, and 80 grit.
Brands Carousel
Prep/Master Concrete Grinding
See the Prep/Master 3030 in operation. Select the grinding tools and bond specified for your machine and slab.
Coating Removal & Specialty Prep Tools
Browse PCD tools, carbide cutters, EG removal tools, Perfect 2 tools and bush hammers. Match the tool to the material being removed and the profile required for the next application.
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Diamond Tooling, Equipment & Instruments
STI Directional Double PCD Prep Tool
- Aggressive double PCD (polycrystalline diamond) preparation tool
- Directional design for efficient coating removal
- Removes thick epoxy, coatings, glue, mastic, and heavy adhesives
- Strips concrete surfaces down to bare concrete quickly
- PCD technology shears coatings instead of grinding through them
- Ideal for materials that clog or wear conventional diamond tooling
- Designed for dry coating and adhesive removal
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Diamond Tooling, Equipment & Instruments
STI EG Carbide Cutters
- Carbide-tipped cutters for aggressive adhesive removal
- Patented EG Quick Change attachment for Prep/Master® grinders
- Removes carpet glue, mastic, tile adhesive, and built-up residue
- Ideal for soft, gummy coatings that clog diamond tooling
- Cuts through adhesives instead of smearing or redepositing them
- Helps extend the service life of diamond tooling
- Mounted on a trap-style tool for Prep/Master® machines
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Diamond Tooling, Equipment & Instruments
STI EG Prep Tools for Removal
- Complete surface preparation tool line for concrete
- Removes epoxy, urethane, coatings, glue, mastic, adhesives, thin-set, mortar residue, and surface buildup
- Patented EG attachment system for Prep/Master® grinders
- Designed for dry operation with dust collection
- Prepares clean, bare concrete before grinding or polishing
- Multiple aggression levels to suit different applications
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Diamond Tooling, Equipment & Instruments
STI Perfect 2 Prep Tool
- Metal bond diamond prep tool for concrete surface preparation
- Standard EG attachment system compatible with Prep/Master (P/M) machines
- Designed for dry-use applications only
- Removes adhesives, thin-set, and epoxy coatings up to 4 mm thick
- Levels surface irregularities up to ±4 mm
- Leaves a smooth, consistent profile comparable to an 80-grit finish
- Ideal for preparing concrete before polishing or floor installation
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Diamond Tooling, Equipment & Instruments
STI Quick Change Bush Hammer
- Aggressive profiling tool for concrete, granite, and marble
- Produces a CSP 4–5 surface profile
- Creates durable slip-resistant and anti-slip finishes
- Replicates a decorative flamed surface texture
- Improves adhesion for coatings and overlays
- Breaks down hard surfaces that standard diamond tools cannot profile
- Quick-change design for Prep/Master® floor grinders
Brands Carousel
Prep/Master Junior: Edge Preparation
Watch a floor preparation application with the Prep/Master Junior. Refer to the instructions for the exact removal tool you select.
Tool Plates, Drivers & Mounting Hardware
Complete the tooling setup with the correct Prep/Master plate, edge plate, adapter or mounting hardware. Verify model compatibility and the number of tools required.
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Diamond Tooling, Equipment & Instruments
STI Bolt for Oversized Tool Plates
- Replacement bolt for oversized tool plates
- Designed for IMPACTS® Prep/Master 2807 and Prep/Master 3030 floor grinders
- Secures the oversized tool plate during operation
- Direct-fit replacement component
- Replaces worn, damaged, or missing hardware
- Two bolts required per oversized tool plate
- Supports secure installation and reliable grinding performance
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Diamond Tooling, Equipment & Instruments
STI Diamond Disc Driver
- Round driver plate for grinding and surface preparation applications
- Accommodates up to six rubber pad holders or prep tools
- High-impact polyethylene construction for durability
- Universal mounting arbor with twist-lock attachment
- Quick and secure tool installation
- Designed for reliable performance in demanding applications
- Available in 17 in., 20 in., and 20 in. with aluminum pad holders
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Diamond Tooling, Equipment & Instruments
STI Edge Plate – Prep Master 2807 & 2818
- Cuts within ½” (1.27 cm) of walls and edges.
- Eliminates the need for hand grinding along room perimeters.
- Holds all STI tooling and diamond accessories.
- Covers 66% more floor area than STI’s previous tool plate.
- Designed specifically for Prep/Master® 2807 & 2818 grinders.
- Genuine STI replacement part.
- Improves productivity by enabling complete floor grinding with a single machine.
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Diamond Tooling, Equipment & Instruments
STI Edge Plate – Prep Master 3030 & 3038
- Genuine STI edge-grinding tool plate
- Designed for Prep/Master® 3030 (Serial #1255 and newer)
- Compatible with Prep/Master® 3038
- Grinds within ½” (1.27 cm) of walls
- Eliminates most hand-grinding at edges
- Holds all STI tooling and diamond accessories
- Covers 66% more square footage than the previous STI tool plate
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Diamond Tooling, Equipment & Instruments
STI EG Prep/Master Adapter Plate
- Converts EG tool plates to accept Quick Change (QC) tooling
- Compatible with Prep/Master® machines equipped with EG tool plates
- Fast slide-in/slide-out design for tool-free changes
- Reduces downtime during tooling changes
- Securely mounts to existing EG tool plates
- Genuine STI accessory for reliable fit and performance
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Diamond Tooling, Equipment & Instruments
STI Standard Tool Plate – Prep Master 2807 and 3030
- Genuine STI standard replacement tool plate
- Designed for Prep/Master® 2807 and 3030 grinders
- Holds all STI tooling and diamond accessories
- Ideal for everyday grinding and polishing
- Optimized for open-floor applications
- OEM precision fit
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Diamond Tooling, Equipment & Instruments
STI Tool Plate – 2420 & 4430 Prep Master
- Genuine STI replacement tool plate
- Designed for Prep/Master® 2420 and 4430 grinders
- Holds all STI tooling and diamond accessories
- Compatible with grinding and polishing applications
- Standard tool plate configuration for 2420 and 4430 models
- Precision OEM fit
- Durable construction for demanding job sites
Brands Carousel
Explore the Full STI Collection
Find the Right STI Products for Your Application
- Start with the application: Metal-bond diamonds, coating removal tools, cup wheels and mounting plates.
- Check compatibility: Match the machine, attachment, dimensions and exact part number to the listing.
- Review the specifications: Product pages provide the available options and operating requirements.
- Need help? Contact USA Granite Tools with your equipment model and project details.
STI Grinding & Surface Preparation — FAQs
Find answers about this STI collection and choosing compatible products.
Choose metal-bond diamonds for the grinding stage specified for your slab. For coatings or adhesives, review the appropriate removal tool and its limitations before moving to the grinding sequence.
No. Attachment style, plate configuration and tool quantity vary by machine. Check the exact model and the individual product specifications.
EGT, CLC, TPS and finishing pads are organized in the Polishing & Concrete Care collection, so you can continue from preparation into the finish sequence.
Explore manufacturer information on the official Substrate Technology website.