The Right Diamonds for the Onfloor 20 Pro: How to Properly Prep a Garage Floor for a Torginol Resinous Floor

A resinous garage floor is only as good as the concrete preparation underneath it. You can install the highest-quality Torginol resinous floor system available, but if the concrete isn't properly prepared, even the best coating can fail.

 

At Paint Life Supply Co., we believe that proper surface preparation is the single most important step in creating a long-lasting garage floor. One of the most effective machines for residential garage floor preparation is the Onfloor 20 Pro, but getting the most out of this machine comes down to choosing the right diamonds.

Why Diamond Selection Matters

Many contractors assume all diamond tooling performs the same. In reality, the diamond configuration you choose dramatically changes how efficiently your grinder cuts concrete.

 

The Onfloor 20 Pro delivers up to 302 pounds of grinding pressure, but how effectively that pressure is transferred into the concrete depends entirely on the tooling mounted underneath the machine.

The difference between a single-bar and double-bar diamond can significantly impact:

• Production speed
• Coating removal
• Concrete profiling
• Tool life
• Final scratch pattern

 

Understanding these differences helps you work faster while producing the ideal Concrete Surface Profile (CSP) needed for a Torginol resinous floor.

Understanding Machine Pressure

Think of grinding pressure like standing on snow.

 

If you stand in boots, your weight is spread over a large area and you don't sink very far.

 

If you stand on the tip of a shovel, all of your weight is concentrated into a tiny point and it sinks much deeper.

 

Diamond tooling works the same way.

Single Bar Diamonds

A single-bar diamond has less contact surface touching the concrete. Because the machine's weight is concentrated into a much smaller area, the pounds per square inch (PSI) increase dramatically.

Higher PSI means:

• Faster cutting
• More aggressive grinding
• Quicker coating removal
• Deeper penetration into hard concrete

Double Bar Diamonds

Double-bar tooling doubles the amount of contact surface.

 

Instead of concentrating the weight, it spreads the machine's pressure across a larger footprint.

This results in:

• Smoother grinding
• More controlled cutting
• More consistent scratch patterns
• Longer diamond life

Single Bar vs. Double Bar

Single Bar Advantages

Single-bar diamonds are the most aggressive tooling available for the Onfloor 20 Pro.

Benefits include:

• Highest PSI pressure
• Faster stock removal
• Excellent for hard concrete
• Cuts stubborn coatings quickly
• Maximizes the machine's grinding power
• Ideal for lighter planetary grinders

 

The tradeoff is that they wear faster because each diamond experiences more concentrated friction.

Double Bar Advantages

Double-bar diamonds excel when you want more control.

Benefits include:

• Larger contact footprint
• More uniform scratch pattern
• Longer tool life
• Better on softer concrete
• Reduced chance of gouging
• Excellent for refining the concrete profile

How They Perform on the Onfloor 20 Pro

The Onfloor 20 Pro is a mid-weight planetary grinder capable of producing up to 302 pounds of grinding pressure. Because of this, tooling selection has a tremendous impact on productivity.

Single Bar Cha-Ching Diamonds

When equipped with 25 Grit Quick Tool Single Bar Cha-Ching Diamonds, the machine focuses its entire grinding pressure onto just three narrow contact points.

 

This allows the diamonds to bite aggressively into the concrete.

 

These are the diamonds we recommend when:

• Removing old epoxy coatings
• Grinding away polyaspartic coatings
• Removing urethane coatings
• Eliminating thin-mil epoxy systems
• Grinding hard concrete
• Creating an aggressive CSP profile

 

For residential garage floors, these diamonds deliver the fastest production and make full use of the Onfloor 20 Pro's available grinding pressure.

Double Bar Cha-Ching Diamonds

Double-bar tooling increases the surface area contacting the floor.

Instead of digging aggressively, the machine glides more evenly across the slab.

These diamonds are best when:

• Working on softer concrete
• Preventing excessive gouging
• Creating a more uniform scratch pattern
• Performing controlled initial grinding

 

If the concrete is soft, a single bar can sometimes cut too aggressively. Double bars provide greater control while still creating the proper profile for coatings.

Our Recommendation for Residential Garage Floors

When preparing concrete for a Torginol resinous floor system, our preferred setup on the Onfloor 20 Pro is:

25 Grit Quick Tool Single Bar Cha-Ching Diamonds

These diamonds provide:

• Maximum cutting speed
• Excellent coating removal
• Efficient profiling
• Better productivity
• Ideal CSP for resinous flooring

 

For most residential garages, this combination allows contractors to prep floors quickly while producing the surface profile necessary for outstanding coating adhesion.

Why Proper Concrete Prep Matters

A resinous floor doesn't bond to smooth concrete.

It bonds by mechanically locking itself into thousands of microscopic scratches created during grinding. This is known as the Concrete Surface Profile (CSP).

Proper diamond tooling creates:

• Better mechanical adhesion
• Longer coating life
• Reduced risk of delamination
• Improved impact resistance
• Better resistance to hot tire pickup

 

Without the proper CSP, even premium coatings cannot perform as designed.

Pair the Right Diamonds with the Right Coating

Torginol resinous floor systems are engineered for exceptional durability, chemical resistance, and long-term performance. However, every great floor starts with proper preparation.

 

By matching the Onfloor 20 Pro with 25 Grit Quick Tool Single Bar Cha-Ching Diamonds, you'll maximize the machine's 302 pounds of grinding pressure, increase production rates, and create the ideal surface profile for long-lasting adhesion.

 

The result is a professional-quality garage floor that not only looks incredible but also stands up to years of vehicle traffic, chemicals, abrasion, and hot tires.