grinding and polishing

1. Grinding & Polishing Products
PART 1: GRINDING
May 2022

2. OPENING STATEMENT
This presentation is designed to serve as a stand-alone
training piece, as well as act as a companion piece to
Lackmond’s hands on diamond training program..
Classroom instruction is important, but there is no
substitute for hands on training to reinforce academic
concepts. Contact your Lackmond representative to
schedule hands-on training: 800-850-2044.
Grinding & Polishing course includes :
• Grinding
• Polishing

3. COURSE OVERVIEW
Grinding
• Tool Overview
• General cup wheel features and uses
• Proper mounting of cup wheel on tool
• Proper grinding techniques
• F5 Flexible Grinding Wheel
• Spike Grinding Wheel
Polishing
• Tool Overview
• General features and uses
• Proper polishing techniques

4. Blade Guard
Threaded Spindle
TOOL OVERVIEW
Important Terms and Features for a typical Hand Grinder:
Spindle Lock
Reversible Handle
On / Off Switch

5. Cup wheels come in two main arbor configurations:
5/8”-11 Threaded Nut
• Screws on to the 5/8”-11 threaded spindle found on most
industry hand grinders
• Does not require additional tool for mounting / removing cup
wheel from grinder
7/8” – 5/8” Arbor
• Utilizes a threaded flange and/or nut to secure cup wheel to tool
• Requires additional tool to tighten flange
• Lower profile set up more conducive to use with dust collection
systems
THREADED VS. STANDARD ARBOR
Arbor (5/8”-11)

6. One piece molded body eliminates potential error in hub-to-body weld
and results in less felt vibration
No weld between threaded
nut and cup wheel body
Material removed to balance
cup wheel if needed
CUP WHEEL FEATURES
Each cup wheel is individually balanced at the factory
for minimal vibration and optimal performance

7. SINGLE ROW CUP WHEELS
Typical Uses
• Most effective where minimal grinding is necessary
• Most price conscious diamond product available for grinding
• Usually first transition point from customers using traditional bonded
abrasives
• Available in 4” – 7” diameters
Advantages
• Lower cost makes this ideal for smaller jobs
Other Considerations
• Very aggressive style and prone to gouging
• Only one “ring” of diamond segments touching at any given time
• Not a very stable grinding platform

8. DOUBLE ROW CUP WHEELS
Typical Uses
• Most popular style of cup wheel in the industry
• Excellent cost / performance value
• Used in a wide variety of applications and often employed in
correcting mistakes or repairing concrete and masonry surfaces
• Available in 4” – 7” diameters
Advantages
• Provides roughly twice the life and surface removal over traditional
single row cup wheel designs
• Provides a more stable grinding platform than single row cup wheels
Other Considerations
• Finished surface may not be smooth enough for polishing

9. Typical Uses
• Most popular style for heavy use applications, leveling, & heavy
grinding
• Leaves a smoother, swirl pattern that is a great foundation for
polishing
• Popular in renovation and restoration applications
• Available in 4” – 7” diameters
Advantages
• More segments means faster removal, smoother surface, and longer
cup wheel life
• Segment orientation creates stable grinding platform available
• Best cost/performance value over the life of the tool
Other Considerations
• More expensive than both single and double row cup wheels
SEGMENTED TURBO CUP WHEELS

10. Typical Uses
• Popular in decorative concrete applications and as a precursor to
polishing
• Very popular in stone industries with the proper bond
• Available in 4” – 7” diameters
Advantages
• Provides an extremely smooth finish ready for final polish
• Not nearly as aggressive as other styles of cup wheels, allowing
for finer control
Other Considerations
• Not nearly as aggressive as other styles of cup wheels, resulting
in slower grinding
• Most expensive style of cup wheel
• Must be spec’d to application type when used in stone, granite,
or marble applications.
TURBO CUP WHEELS

11. Typical Uses
• Popular in tile, stone, and restoration industries
• Excellent for removing thinset from wood subfloor
• Very popular for removing mortar, paint, or other coatings from
brick, concrete, and many other materials
• Available in 5” diameter, and Coarse, Medium and Fine Grits
Advantages
• Flexible rubber backer greatly reduces vibration and user fatigue
• Extremely controllable; aggressiveness depends on pressure,
angle, and grit type
• Available in Coarse, Medium, and Fine grits
Other Considerations
• Diamond spirals can separate from wheel if flexed too
aggressively
• Longevity issues on some materials
F5 GRINDING WHEEL

12. Typical Uses
• Popular in tile, stone, concrete and restoration industries
• Excellent for removing coatings such as thin-set , paint, mastic
and epoxy from concrete and masonry surfaces
• Ideal for removing mesh from the back of stone
• Works well for grinding and stock removal on concrete, masonry
and stone surfaces
• Available in 4” – 7” diameters
Advantages
• Unique diamond spike configuration
• Extremely controllable; aggressiveness depends on pressure,
angle, and grit type
• Durable steel body
Other Considerations
• Diamond spike may wear easily on softer abrasive materials
• Longevity issues on some materials
BEAST SPIKE GRINDING WHEEL

13. Grinding & Polishing Products
PART 2: POLISHING

14. Threaded Spindle
On / Off Switch
Reversible Handle
Polishing Pad
Water Inlet / Valve
TOOL OVERVIEW
Important Terms and Features for a typical Wet Polisher:
• Water is dispersed through the spindle

15. Polishing pads come in a variety of grits ranging from
50 – 3000 and final buffs
• As a reference: common, dry “dirt” is 400 grit
• Pads should be used starting with the lowest grit an working
progressively higher
• Final buff pads must be matched to stone by color
Available in both Wet and Dry configurations
• Application specific
o Ex: Granite pads will not perform well on Marble or Concrete
• Wet pads MUST be used wet; Dry pads may be used Wet or Dry
• During use, keep polishing tool moving in small circles
o Optimal tool speed is 3,000 RPM
DISCUSSION POINTS

16. Typical Uses
• Used in polishing granite, stone, and concrete countertops
• Variety of configurations and bonds allow excellent performance
in most any surface
Advantages
• Most cost effective way to polish most hard surfaces
• Excellent life and polishing speed when spec’d correctly
Other Considerations
• Must be used wet and can create a mess
• Must be matched to specific applications
• Require multiple specialized tools to reach full performance
potential
• Insufficient water flow can ruin a pad and damage work surface
WET POLISHING PADS

17. Typical Uses
• Popular when repairing and refinishing granite surfaces where
water containment is an issue
Advantages
• Dry polishing is much cleaner than wet polishing
• Does not require specialized tool for use
Other Considerations
• Less life than wet polishing pads
• Must be matched to specific applications
DRY POLISHING PADS

18. Variety of types and styles available depending on use
• Stiff backer pads most popular in flat polishing
• Flexible and Ultra-flexible pads popular for curved or rounded
surfaces
5/8”-11 threaded for mounting on hand grinders or popular
industry wet polishing tools
Velcro backed for easy attachment / removal of pads when
progressing through grits
BACK UP PADS

19. Thank you for completing the Grinding & Polishing training
module.
For any questions on this and other products offered by
Lackmond Products, Inc. please contact our customer service
department at 1-800-850-2044.
Also, please see all these products and more on our website:
Lackmond.com.
THE END
THANK YOU!