Engineered quartz countertops are a popular choice for kitchen and bathroom remodeling projects due to their durability, aesthetic appeal, and easy maintenance. When it comes time to cut and install quartz countertops, having the right tools is essential for a clean, precise cut. Here is an overview of the best kinds of blades to use when cutting engineered quartz.
Diamond Blades Are Ideal for Cutting Quartz
Diamond blades designed specifically for cutting stone materials like quartz, granite, and marble are the optimal choice. The diamonds along the edge of the blade allow for smooth, clean cuts through the quartz without chipping or cracking. There are a few types of diamond blades:
Continuous Rim Diamond Blades
- These have diamonds across the entire cutting edge and are best for straight cuts along the length of the quartz slab.
Segmented Diamond Blades
- Have diamonds embedded in segmented sections and are ideal for curved, shaped, or angled cuts. The spaces between diamond segments allow for swarf (ground material) to dissipate.
Turbo Rim Diamond Blades
- Feature a continuous rim of diamonds but with recesses between segments to clear away debris. This allows faster cutting through thick slabs.
For best results, choose a diamond blade size that is appropriate for your specific saw or angle grinder. Proper blade size will lead to smooth, accurate cuts.
Wet Cutting Methods Are Recommended
It is highly advisable to use the “wet cutting” method when cutting quartz countertops. This entails running water over the diamond blade and countertop during cutting to cool the blade and control dust. Wet cutting prevents the quartz from overheating and cracking while keeping blade temperatures down for a longer blade life.
Always check the manual for your saw to determine recommended water flow rates and cutting speed settings when wet cutting engineered quartz.
What About Ceramic Blades?
Ceramic blades are not suitable for cutting quartz countertops. While ceramic blades stay sharp for longer than steel blades, they lack the hardness needed to cut through engineered quartz without chipping or cracking the slab. At best, ceramic blades will quickly become dull when used on quartz.
Avoid Cutting Quartz Dry
It’s possible but not ideal to cut quartz countertops “dry” without water. This increases blade wear, usually burns or mars the cut edge of the quartz, and creates a dangerous dust cloud. Only cut quartz dry in areas with excellent ventilation and dust collection systems in place. Even occasional dry cuts will shorten the life of diamond blades.
Proper Handling Prevents Cracks
In addition to using the right diamond blade, it’s important to properly support the quartz during cutting to prevent cracks. Allow the quartz to overhang the saw table evenly on both sides of the blade. Never cut pieces that are too small to be properly held in place.
Final Tips
- Check blade condition often and replace worn blades for best performance.
- Allow the saw and blade to reach full speed before starting cuts.
- Advance the blade slowly through the quartz for smooth, chip-free cuts.
- Apply even pressure when cutting; forcing or twisting the blade may cause cracks.
With the proper diamond blade and careful handling, engineered quartz can be cut and fabricated into beautiful countertops for any home or business. Investing in quality tools and learning best practices for cutting quartz will lead to stunning results.
Frequently Asked Questions About Cutting Quartz Countertops
What rpm should I run the blade at for cutting quartz?
For wet cutting quartz slabs, the blade should run between 900-1100 surface feet per minute (SFPM). Refer to your saw manual for the proper rpm rate to achieve this SFPM. Slowing the blade rpm for quartz cuts will help control chipping.
Can I cut quartz countertops with a circular saw?
Yes, a circular saw with a diamond masonry blade is suitable for straight cuts in quartz. Ensure adequate water supply and take precautions against silica dust. An angle grinder with diamond blade can be used for shaped cuts.
How long do diamond blades last when cutting engineered quartz?
On average, one diamond blade will last 30 to 60 linear feet of quartz cuts if used properly. Higher quality diamond blades may last longer. Replace blades as soon as cutting performance declines.
What causes chipping when cutting quartz countertops?
The main causes of chipping are worn diamond blades, cutting too fast, not wetting the blade adequately, or applying too much pressure. Maintaining proper blade condition and follows best practices will minimize chipping.
Should I cut quartz countertops inside or outside?
Outside is ideal to control the large amount of silica dust produced. Use a wet saw with integrated water supply. An indoor garage can work if sufficient dust extraction or filtering is used to capture silica particles.
How thick of an engineered quartz slab should be used for countertops?
The industry standard thickness for quartz countertops is 3 cm (1.2 inches). Thicker 2 cm slabs are prone to cracking while thinner slabs lack durability. Larger expanses may require thicker quartz.
Conclusion
Cutting engineered quartz countertops involves unique considerations compared to other materials. Investing in the proper diamond cutting blades designed specifically for quartz is the best way to achieve clean, smooth cuts in this hard stone. Combining the right blades with wet cutting methods, proper saw setup, and handling precautions will lead to professional-looking quartz countertop installations. With some basic knowledge about diamond blades and practice cutting quartz, homeowners and contractors can take full advantage of this popular material.