
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 Swing Machine 17-inch – Rotary Floor Machine
- 17-inch diameter
- Planetary steel helical-cut gear drive for superior reliability
- 1.5 HP / 120V
- Dual Electric Motor: 175 & 300 RPM
STI Swing Machine 20-inch – Rotary Floor Machine
- 20-inch diameter
- Planetary steel helical-cut gear drive for superior reliability
- 1.5 HP / 120V
- Dual Electric Motor: 175 & 300 RPM
Vacuum Hoses – Various Sizes
- For use with dust collectors and wands
- Available in 2-, 3-, 5-, and 6-inch diameters
- 2- & 3-in. hoses sold in 25-ft increments
- 5- & 6-in. hoses sold in 50-ft lengths only
Longopac Dust Collection Bags
- Replacement / backup package of four liners
- For Prep/Master®Â HEPA dust collectors or similar brands
- 72-foot long continuous liner
- 5.5 mil thickness
- Makes up to 25-30 bags
PLP Diamond System – Planetary Polishing – Dry Process
- For dry planetary polishing
- Coordinated metal and resin bonded diamond system (steps #1-#9)
- 3-inch diameter
- Performs concrete polishing using any planetary machine sized 770mm-950mm, 15-24HP, & weighing between 800 and 1,000 pounds
- Color: yellow
TPS Diamond System – Terrazzo Polishing – Wet Process
- For wet terrazzo polishing
- Coordinated metal and resin bonded diamond system (steps #1-#7)
- 3-inch diameter
- Creates a highly polished concrete floor
- Color: orange
#0 Surface Prep Tool – Concrete Surface Preparation
- Leaves a smooth profile for further polishing or installation of floor material
- Dry removal tool only
- 3-in. metal bond diamond
- Available in four bonds: standard, soft, hard, and extra hard
Slurry Slayer – Concrete Slurry Solidifier
- Turns slurry into a non-hazardous, landfill-accepted solid — scoop it up and bag it
- No fillers — you’re not paying for added weight
- Reacts faster and with less material than competitors’ products
- Highly efficient — one 55 lb bag absorbs up to 550 gallons of slurry
- Developed by a working contractor — built for real job-site conditions
#00 Surface Prep Tool – Concrete Surface Preparation
- Leaves a rough profile
- Aggressive, super fast PCD tool for removal of coatings, mastics, or rough concrete
- Dry removal tool only
- 3-in. metal bond diamond
STI Edge Plate – Prep Master 3030 & 3038
- For the Prep/Master 3030 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
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.









