STI Edge Plate – Prep Master 3030 & 3038

The STI Edge Plate for the Prep/Master® 3030 lets your machine grind right up to the wall — cutting within just ½ inch (1.27 cm) of the edge and eliminating the need for hand-grinding to finish edges. It holds all STI tooling and diamonds and covers 66% more square footage than our previous tool plate, so you finish floors faster, edge to edge, with one machine.

Call for pricing and availability, or request a quote — you’ll talk to a real surface-prep expert, not a call center — fast answers and real recommendations.

Fits 3030 Machines, Serial #1255 and Newer

Before ordering, check your machine’s serial number. This edge plate is designed for Prep/Master® 3030 machines with serial #1255 and newer. Not sure about your serial number? Call us and we’ll confirm it’s the right fit.

Features

• Cuts within ½ inch (1.27 cm) of the edge — grind right up to walls
• Eliminates the need for hand-grinding to finish edges — one machine does it all
• Holds all STI tooling and diamonds — use your full tooling lineup
• Covers 66% more SF/M² than STI’s previous tool plate — more coverage, faster work
• For Prep/Master® 3030 machines, serial #1255 and newer

Why It Matters

The perimeter is where floor prep slows down — a standard head leaves an unground border at the wall, forcing you to switch to a hand grinder to finish it. This edge plate gets your 3030 within a half inch of the wall, so you skip the hand-grinding step entirely and cover far more floor per pass. Faster jobs, fewer tools, better edges.

Frequently Asked Questions

How close to the edge does it cut? Within ½ inch (1.27 cm) of the wall.

Does it eliminate hand-grinding? Yes — it lets the 3030 finish edges that would otherwise need a hand grinder.

Will it fit my 3030? It fits Prep/Master 3030 machines with serial #1255 and newer. Check your machine’s serial number, or call us and we’ll confirm.

What tooling does it use? It holds all STI tooling and diamonds.

Order Your Prep/Master Parts Today

Call (815) 941-4800 x 1 or fill out our contact form. See our grinder accessories, diamond tooling, and machines.

Item# 885013030