Views: 0 Author: ZHUOSHI Technical Team Publish Time: 2026-08-29 Origin: Original
Drilling porcelain tile, ceramic tile, sintered stone and marble requires a tool that can remove hard, brittle material without relying on impact force. A wet sintered diamond core drill bit is designed for this type of application.
The ZHUOSHI thin-wall wet sintered diamond core drill bit features a 0.95 mm cutting rim and a straight shank. It is intended for use with a hand drill or suitable drilling machine under continuous water cooling. It is not an M14 angle-grinder drill bit and must not be used in hammer or percussion mode.
A diamond core drill bit removes a circular ring of material and leaves a core plug inside the bit. This drilling method requires less material removal than drilling out the entire hole.
The diamond cutting rim grinds through the hard surface rather than cutting it with conventional teeth. The one-step sintered rim is intended for repeat wet drilling, while continuous water cooling controls heat and helps carry abrasive slurry away from the drilling area.
Porcelain tile
Ceramic tile
Sintered stone and large-format porcelain slabs
Marble tiles and panels
Material composition, surface hardness and thickness can vary. Carry out a drilling test before processing valuable finished panels or starting a large production batch.
Wet diamond core drill bits are commonly used by tile installers, plumbers, electricians, kitchen and bathroom installers and building-material fabricators.
Water supply and drainage pipe openings
Shower fittings and faucet connections
Bathroom accessories and sanitary installations
Cable and conduit pass-through openings
Switch, socket and lighting connections
Cabinet, furniture and appliance installation holes
The 0.95 mm thin-wall design produces a narrow drilling path and removes less material. Because the cutting rim is thin, the operator must keep the drill correctly aligned and avoid side loading.
The straight shank is designed for compatible corded or cordless hand drills and stationary drilling machines. Check that the drill chuck securely holds the shank before starting.
This product is not suitable for:
Angle grinders or M14 grinder connections
Hammer drills operating in hammer mode
Rotary hammers operating in percussion mode
Dry drilling without water
Identify the surface material, its thickness and the substrate behind it. A bit intended for porcelain or marble may not be suitable for concrete, brick, cement board or other backing materials.
Choose a diameter that provides sufficient clearance for the pipe, cable or fitting. Consider the outside diameter, installation tolerance, edge distance and material thickness.
Check the cutting rim, shank, body roundness and inside of the bit. Do not use a cracked, damaged or visibly distorted drill bit.
Place loose tiles and slabs on a flat, stable support. Insufficient support can contribute to cracking or breakout when the bit reaches the back surface.
A rigid drilling guide or template is recommended, particularly for large diameters and smooth glazed surfaces. It prevents the cutting rim from sliding and improves hole positioning.
Mark the hole. Confirm the position against fixtures, material edges and possible concealed services.
Secure the workpiece and guide. Neither should move during drilling.
Install the bit correctly. Insert the straight shank fully into the drill chuck and check that it rotates concentrically.
Turn off hammer mode. Use standard rotary mode only.
Start the water supply. Apply clean water before the rim contacts the material and maintain continuous flow.
Begin inside the guide. Allow the diamond rim to establish a complete circular groove.
Use controlled speed. Follow the confirmed speed range for the diameter, material and machine. Do not assume that one speed is suitable for every size.
Apply moderate pressure. Let the diamond rim grind the material. Excessive force increases heat and mechanical stress.
Maintain alignment and cooling. Keep the drill perpendicular, avoid side pressure and ensure slurry can leave the cut.
Reduce pressure before breakthrough. This helps limit breakout on the exit side.
Clean the bit. Disconnect the machine, remove the core plug and flush away slurry after drilling.
Never strike or lever against the 0.95 mm cutting rim when removing a trapped core.
When drilling a tile already installed over concrete, brick, cement board or another substrate, use the wet diamond core bit only for the approved finish material. Once the tile or slab has been penetrated, change to the correct drill bit for the backing material.
Before drilling an installed surface, check for concealed electrical cables, water pipes and structural components.
Dry operation creates excessive heat and may rapidly damage a wet-rated diamond rim.
Impact action can crack ceramic, porcelain and sintered slabs and may damage the core bit.
Forcing the bit does not necessarily improve drilling speed. It can overload the machine, distort the thin rim and damage the workpiece.
Side loading is particularly harmful to a 0.95 mm thin-wall rim. Keep the drill aligned throughout the hole.
A straight-shank wet core bit is intended for a drill or drilling machine. Do not fit it to an angle grinder or improvised threaded adapter.
Remove the core plug and clean the inside after every hole. Accumulated material can restrict cooling and make subsequent drilling more difficult.
Wear eye protection, hearing protection and suitable gloves.
Use equipment approved for the working environment.
Keep electrical connections away from water.
Use suitable GFCI or RCD protection when required.
Disconnect the machine before installing, inspecting or cleaning the bit.
For correct product selection, provide the required hole diameter, material type, material thickness, drilling depth, machine model, chuck capacity, shank diameter, expected quantity and water-supply method.
A thin-wall wet sintered diamond core drill bit is a practical solution for controlled openings in porcelain, ceramic tile, sintered stone and marble. For consistent results, use continuous water cooling, rotary mode, correct alignment, moderate feed pressure and adequate workpiece support.
Contact ZHUOSHI with your required diameter, application material, drilling depth, machine type and order quantity for product selection, samples and OEM or private-label solutions.
