Description

Key Features

Premium Aluminum Oxide Blend

A superior-grade abrasive formulation that cuts fast and holds up through extended sanding sessions – you get more surface covered before the sheet wears out.

StickFast PSA Backing

Industrial-grade Pressure Sensitive Adhesive backing holds the sheet firmly to the platen with no slipping mid-pass – peel, stick, and get to work.

Clog-Shield + ENDURA-BOND

A stearate anti-loading coating keeps pitch and resin from building up on the grit surface, while ENDURA-BOND resin locks the abrasive to the backing so grains don’t shed prematurely.

Overview

The Diablo DCS120120P01W is a 12 in. x 18 in. 120-grit fine sanding sheet designed for use with large-format floor and cabinet sanders that accept adhesive-backed sheets. This is a sander accessory built for light stock removal, surface leveling, and final prep work before applying a top coat on wood surfaces.

The abrasive layer uses a premium aluminum oxide blend – the same mineral class pros trust for consistent cut rate and predictable wear. At 120-grit, this sheet sits squarely in the fine range: aggressive enough to knock down rough spots or scratch patterns left by coarser grits, but smooth enough to leave a surface ready for stain, sealer, or finish without additional hand sanding.

Diablo’s Clog-Shield is a high-performance stearate coating applied over the abrasive surface. When you’re sanding resinous woods like pine or working over old finish, that coating is what keeps the sheet from glazing over. Less clogging means longer sheet life and fewer stops to swap out abrasives. Combined with ENDURA-BOND – a specialized high-strength resin bond system – the grit stays where it’s supposed to be throughout the sheet’s usable life, rather than shedding mid-session.

The StickFast backing uses an industrial-grade Pressure Sensitive Adhesive that attaches directly to compatible sander platens. Peel the liner, press it down, and it holds. It’s specifically designed for the Clarke-American OBS18 orbital sander – a common machine found in tool rental departments – making this sheet an easy drop-in replacement for rental shop work, flooring prep, and large-panel sanding tasks.

This sheet is ideal for woodworkers, flooring contractors, and remodelers who are doing final prep sanding on wood floors, cabinet panels, or large flat surfaces. If you’re prepping a surface for any kind of top coat – whether that’s polyurethane, stain, or paint – this is the grit and format to have on hand.

Diablo DCS120120P01W – Clean Surface, Every Pass

One sheet covers a lot of ground. At 12 in. x 18 in., this is a large-format abrasive built for machines that do real work – not palm sanders or hand blocks. The StickFast PSA backing makes swapping sheets quick and clean, with no clips or clamps to deal with.

• 120-grit fine grade – removes sanding scratches and preps wood for top coat
• Clog-Shield coating extends sheet life when sanding resinous or finish-coated wood
• ENDURA-BOND resin keeps grit bonded to backing for the full life of the sheet
• Designed for the Clarke-American OBS18 and compatible PSA-platen sanders

What’s in the Box

• (1) 12 in. x 18 in. 120-grit fine sanding sheet with StickFast PSA backing

Key Specifications

Grit	120
Sanding Grade	Fine
Sheet Size	12 in. x 18 in.
Abrasive Material	Premium Aluminum Oxide Blend
Backing Type	StickFast PSA (Pressure Sensitive Adhesive)
Attachment Method	Adhesive
Package Quantity	1 sheet
Weight	0.2 lb

Compatibility

Clarke-American OBS18 Orbital Sander

Designed as a direct fit for the Clarke-American OBS18 – a floor orbital sander widely available through tool rental departments.

PSA-Platen Sheet Sanders (12 in. x 18 in.)

Compatible with any large-format sheet sander that uses a 12 in. x 18 in. Pressure Sensitive Adhesive platen interface.

Built For

Wood Floor Preparation Cabinet Sanding Pre-Finish Prep Woodworking Flooring Contractors Remodeling DIY / Hobbyist Rental Tool Users

Pro Tip

When attaching the StickFast sheet, press firmly from center outward to eliminate air pockets – a lifted edge mid-pass will cause chatter marks that take longer to fix than getting the stick-down right the first time. If you’re renting a Clarke-American OBS18, keep a few extra sheets on hand because 120-grit on bare wood floors moves faster than most people expect.

Tool Nut’s Take

Tool Nut’s Take

The Sheet That Does the Dirty Work Before the Finish Goes On

The Diablo DCS120120P01W is a workhorse abrasive for anyone prepping large wood surfaces – floors, panels, or cabinet faces – before the final coat goes down.

• Who it’s for: Flooring contractors, woodworkers, and anyone renting a Clarke-American OBS18 who needs a quality replacement sheet that lasts longer than the bargain-bin options.
• Why it stands out: The Clog-Shield coating is the real differentiator – it keeps this sheet working on resinous and finish-coated wood where cheaper aluminum oxide sheets glaze over and stop cutting within minutes.
• Worth knowing: This is a single-sheet pack, so order multiples if you’re doing a full floor – one sheet won’t cover a room.

Common Questions

• What sander is this sheet designed for? It’s specifically designed for the Clarke-American OBS18 orbital sander, which is commonly found in tool rental departments. It will also work with any large-format sander that accepts 12 in. x 18 in. PSA-backed sheets.
• Is this sheet for bare wood or previously finished surfaces? Both. At 120-grit fine, it’s suitable for light stock removal on bare wood and for scuff-sanding between coats of finish. It’s the right grit for final prep before top coat application.
• How does the StickFast backing attach to the sander? It uses a Pressure Sensitive Adhesive – peel the liner off the back of the sheet and press it firmly onto the sander’s platen. No clips or fasteners needed.
• Can I use this sheet by hand? The 12 in. x 18 in. format is intended for machine use. For hand sanding, smaller sheets or cut-down pieces would be more practical.