1384 Bungalow Rd.
Morris, Illinois, U.S.A.
Substrate Technology, Inc.
Prep/Master® Grinders, Dust Collectors, and Diamond Systems
Substrate Technology
This is our own line — the equipment and tooling we build, brand, and stand behind. As the makers of the Prep/Master® grinder and the source for STI diamond tooling, polishing systems, and patented terrazzo pads, we bring you products engineered from decades of real-world surface prep experience — and backed by experts who actually know the work. Call and talk to a real surface-prep expert, not a call center.
The Prep/Master® Grinder
The heart of our line: the Prep/Master® grinder — our own low-maintenance, gear-to-gear concrete grinder and polisher, built to last and available in a range of sizes. We design it, build it, and support it in-house. Learn more about the Prep/Master.
FL-07 Diamond Pads — Our #1 Patented Pad
Our best-selling pads, period: the FL-07 diamond pads are patented and exclusive to Substrate Technology — you can't buy them anywhere else. They're the go-to polishing pad for contractors who know them, fitting a wide range of grinders, and they deliver a consistent, high-quality polish step after step. We also offer them in a ring-type version for hand grinders for edges and detail work. There's one source for FL-07 — and it's us.
STI Diamond Systems & Tooling
Our color-coded diamond polishing systems (CLC, EGT, and TPS) take you from grind to polish on concrete and terrazzo — and we make the full range of STI diamond tooling to go with them:
- Diamond tooling — grinding segments, prep tools, and polishing pads
- Surface prep tooling — for coating and adhesive removal
- EG attachment holders, adapters, and the parts that tie it all together
STI Edge Plate – Prep Master 2807 & 2818
- For the Prep/Master 2807 grinding machine
- Holds all STI tooling & diamonds
- Cuts within 1/2 inch (1.27cm) from edge
- Covers 66% more SF/M2 than STI’s previous tool plate
Prep/Master EG Metal Adapter – Velcro Attachment
- Female adapter for EG “Quick Change” system
- Metal casing with velcro attachment of resin insert
- For use with 3-inch EG Resin Insert to prevent scratches on the surface of the floor
Prep/Master EG Resin Insert
- Extra support secures tool to velcro head to prevent scratches in the floor surface
- Grooved side fits into 3-inch “EG Metal Adapter – Velcro Attachment”
Prep/Master EG Adapter Plate – Quick Change
- Attaches to STI Edge Plates and STI Tool Plates for after-market assembly
- EG Diamonds easily slide in and out of slots for quick change of tooling
- Designed for use with the EG “quick change” diamonds and adapters
STI Tool Plate – 2420 & 4430 Prep Master
- Holds all STI tooling & diamonds
- Gives the flattest possible floor finish
- Standard tool plate for 2420 or 4430 models
Morflex Coupler
- Provides flexibility for the tools to follow the contour of the floor
- Attaches to STI Edge Plate and STI gearbox
- Good replacement part to have on hand for less downtime (see PM Repair Kit for spare parts)
- Available in various sizes and flexibilities
STI Quick Change Bush Hammer – Concrete Surface Prep
- Aggressive profiling tool
- Provides CSP 4 to CSP 5 profile
- Creates slip-resistant finish on concrete, granite, and marble
- Long lasting tool – 15,000 SF (1,500 m2)
- Breaks down the surface that standard diamonds can’t touch
- Quick Change
STI 10-Seg Diamond Segments
- Use for opening steps on uncoated concrete
- Excellent scratch pattern for old or new concrete
- Use wet or dry
- Attaches in 3 different configurations for multiple machines
STI CASH Pads – Concrete, Terrazzo, & Marble Polishing
- Excellent for light-use polishing maintenance
- Use on auto-scrubbers and swing machines to remove dust, dirt, and resin swirl
- For concrete, terrazzo, and marble floors
- Life expectancy: 15,000 SF (1,500 m2)
- A 3-step system used with water
STI Terrazzo REDZ – Terrazzo Polishing Pads
- For wet polishing epoxy and portland-based terrazzo & stone floors
- Use for closing & polishing steps
- No center hole eliminates collection of debris and spent diamonds
Patented, Exclusive Terrazzo Pads
Some of our products you can’t get anywhere else. Our patented STI terrazzo pads — like Terrazzo+, Terrazzo REDZ, and our terrazzo polishing pads — are exclusive to Substrate Technology. We hold the patent, so no other supplier can offer them. See our terrazzo tooling.
Built and Backed by STI
When you buy STI, you get more than a product — you get the company behind it: in-house engineering, Lavina-certified, nationwide service, a 1-year repair warranty, and real experts on the phone. Service. Support. Success.
Order STI Equipment Today
Call (815) 941-4800 x 1 or fill out our contact form. See our machines, diamond systems, and diamond tooling.