Wrist Chronicles

How to fix wrist watch glass

Learn easy steps to repair your wrist watch glass, from removing the old glass to installing a new one, ensuring your timepiece looks great and functions well.

Begin by assessing the damage. If the material is cracked or shattered, replacing it is the most reliable solution. Choose a replacement component that matches the dimensions of the original to ensure proper fit and functionality.

To proceed, gather the necessary tools: a soft cloth to prevent scratches, a pair of tweezers, and a plastic opening tool. Carefully remove the back casing of the timepiece using the plastic tool to avoid damaging the casing. Once open, gently detach the existing cover by lifting it away from the framework.

If the surface is merely scratched, consider a polishing compound specifically designed for mineral or sapphire surfaces. Applying this substance with a soft cloth can restore clarity and shine without the need for a complete replacement. Always follow the manufacturer’s guidelines to ensure compatibility and avoid further damage.

Repairing Timepiece Crystal

Employ a soft cloth to clean the area surrounding the breakage. Ensure that the surface is free from dust and oils, which can interfere with the adhesion process.

For minor scratches, consider utilizing a polishing compound specifically designed for acrylic surfaces. Apply a small amount on a microfibre cloth and gently buff the scratch in a circular motion until it diminishes.

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In cases of significant damage, replacing the cover may be necessary. Measure the dimensions accurately and source a compatible replacement from a reliable supplier. Use tweezers for careful manipulation of small components to avoid further harm.

Adhesives designed for glass or crystals are ideal for reattachment tasks. Apply a thin layer to the edges of the fracture and press firmly. Allow the adhesive to set according to the manufacturer’s instructions, typically requiring 24 hours for a sturdy bond.

If the crystal is shattered, consider visiting a professional for extraction and installation of a new cover, as this may require specialized tools and skills.


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Conduct a final inspection post-repair to ensure watertightness and overall integrity. Testing under controlled conditions can prevent potential issues later.

Identifying the Type of Watch Glass Damage

Assess the damage closely. Identify if it’s a scratch, crack, or complete shatter. Scratches usually appear as thin, shallow lines; a crack is more pronounced, spreading from one point, while shattering involves multiple fragments.

Scratches

These are often superficial and can be treated with polishing techniques. Use a suitable polishing compound designed for acrylic or mineral surfaces, as applicable. Check if the scratch is deep before proceeding.

Cracks and Breakage

For cracks, evaluate their length and depth. Small, hairline fractures may sometimes be repaired with adhesives. If there’s significant damage or multiple fractures, replacement might be necessary. Confirm the type of material: synthetic, mineral, or sapphire, to ensure proper matching during replacement.

Gathering Necessary Tools for the Repair

Begin with a small, flathead screwdriver to carefully pry open the casing if applicable. Depending on the model, a case back opener may be required for a secure approach.

A pair of tweezers is beneficial for handling tiny components without causing damage. Ensure they are non-magnetic to prevent interference with any mechanisms.

A suitable replacement for the transparent covering must be sourced, which can typically be acrylic, mineral, or sapphire. Research dimensions to ensure a proper fit.

Keep a soft cloth on hand to prevent scratches during the process.


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Use a magnifying glass or loupe to inspect the area closely for any additional concerns.

Gather the following items:

  • Flathead screwdriver or case back opener
  • Non-magnetic tweezers
  • Replacement lens
  • Soft cloth
  • Magnifying glass or loupe
  • Glue or sealant suitable for the material

Confirm the workspace is clean and well-lit to facilitate precision and accuracy throughout the procedure.

Steps to Remove the Damaged Timepiece Cover

First, ensure the timepiece is powered off or completely unwound to prevent any movement-related issues during the procedure.

Utilize a small, flat-head screwdriver or a specialized case opener to gently pry off the damaged cover. Insert the tool in the seam between the case and the crystal, applying steady pressure. Avoid sudden force to prevent further damage to the casing.

If a snap-on design is present, you may need to carefully slide the tool around the edge, working your way around the circumference. For glued models, a designated crystal remover can be applied with heat to soften the adhesive for easier removal.

Be vigilant of any small components or gaskets that might also be dislodged in the process. Collect these to prevent loss before placing the new cover.

After successfully detaching the faulty part, clean the area thoroughly using a lint-free cloth or a soft brush to eliminate dust or residue. This ensures a secure seal for the new covering.

Installing a New Timepiece Crystal Correctly

Ensure the replacement crystal matches the dimensions of the original component to avoid fitting issues. Begin by carefully cleaning the case to remove any dust or residue, ensuring a secure bond.

Preparing the New Crystal

Before installation, check the new crystal for any imperfections. If necessary, lightly polish the edges with a fine-grit sandpaper for a snug fit. Degrease the surface using isopropyl alcohol to promote adhesion.

Securing the Crystal

Apply a small amount of adhesive around the perimeter of the crystal seat. Align the new crystal precisely and press down firmly to ensure it seals properly. Allow adequate curing time as indicated by the adhesive manufacturer’s instructions before reassembling the timepiece.

Testing the Water Resistance After Repair

Use a pressure testing device to ensure the newly installed lens is fully sealed. Submerge the timepiece in water after the initial inspection to check for leaks. If using a pressure tester, select a model that matches the water resistance rating specified by the manufacturer.

For a basic method, fill a container with water and gently lower the instrument inside, ensuring its depth remains within the recommended limits. Look for bubbles that might indicate a breach. If bubbles appear, reapply the sealant and install the lens again.

After passing the pressure test, allow the device to sit at room temperature for 24 hours. This helps affirm that moisture has not entered the case. Assess seals and gaskets–if any are damaged, replacements are necessary.

Finally, conduct a functional test to check if all features operate correctly without water interference. This encompasses any chronograph functions and date adjustments. Confirm that there are no signs of moisture beneath the newly fitted element before returning it for regular use.

Ethan Cole
Ethan Cole

Ethan Cole is a watch enthusiast and lifestyle writer based in New York. With over a decade of experience exploring the world of horology, he brings expert insights into timepieces that blend craftsmanship, innovation, and personal style. When he’s not reviewing the latest releases, Ethan enjoys vintage watch hunting and photographing timeless moments.

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