SCIGRIP WELD-ON 16 Acrylic Cement

WELD-ON 16 is a strong choice where you need a medium-bodied acrylic cement that is easier to place and control than a water-thin capillary cement.

It is particularly useful for acrylic fabrication, assembly, repairs, signs, displays, housings, models and other applications where a controlled bead of cement is useful.

For very close-fitting acrylic joints where you want a water-thin cement to flow into the joint by capillary action, WELD-ON 3 may be the better option.

WELD-ON 16 is formulated primarily for acrylic / PMMA.

Manufacturer information also lists suitability for bonding:

• Acrylic / PMMA
• Butyrate
• PVC
• ABS
• Polycarbonate
• Selected porous plastic surfaces

Bonding performance depends on the exact plastic grade, surface condition, joint design and application method. Test the adhesive where material compatibility or finished appearance is critical.

WELD-ON 16 and WELD-ON 3 are not simply stronger and weaker versions of the same adhesive. Their different viscosities suit different joint designs and application methods.

Surfaces should be clean and the parts should fit together without excessive forcing.

Apply the cement to one or both bonding surfaces, bring the parts together while the cement is still wet, then hold or clamp the assembly until the initial set has developed.

Avoid excessive adhesive and keep the bonding surfaces correctly aligned during assembly.

Always follow the instructions on the product label and current technical data sheet for the adhesive supplied.

WELD-ON 16 is medium-bodied, so it can be easier to use where a water-thin solvent cement would simply run away from the joint.

However, it should not be treated as a structural filler for large gaps or poorly fitted parts.

Good joint preparation and reasonably close-fitting surfaces are still important for a strong, clean bond.

WELD-ON 16 is a fast-curing cement. Initial bonding develops quickly, but bond strength continues to increase after the parts are assembled.

Do not assume that an assembly is at full strength simply because it can be handled. Allow adequate curing time before placing the finished joint under significant load.

Cure behaviour varies with material, joint design, temperature, ventilation and the amount of cement used. Refer to the current technical data sheet for detailed timing information.

Yes. WELD-ON 16 is specifically formulated for bonding acrylic / PMMA.

It is commonly selected for acrylic signs, displays, housings, fabricated components, models and repair work.

Acrylic surface condition, joint fit and application technique can affect the final appearance, so practise on scrap material where a highly visible finished joint is important.

Manufacturer information lists polycarbonate among the plastics that WELD-ON 16 can bond.

Polycarbonate can be sensitive to solvents and stress cracking, so joint design, material condition and application method are important.

Test the adhesive on the actual material where appearance or structural performance is critical.

Yes. ABS and PVC are both included in the manufacturer's recommended substrate list for WELD-ON 16.

Suitability still depends on the particular plastic grade, joint design and service environment, so critical applications should be tested before production use.

WELD-ON 16 is a solvent-based adhesive and should be handled in accordance with the product label and current Safety Data Sheet.

• Use with adequate ventilation.
• Avoid breathing vapours.
• Avoid contact with skin and eyes.
• Keep away from ignition sources.
• Keep the container closed when not in use.
• Use appropriate protective equipment for the application.

Read the Safety Data Sheet and product instructions before use.

A downloadable product data sheet is available near the price at the top of this product page.

Use the current technical and safety documentation when detailed substrate, curing, application or safety information is required.

If you're unsure whether WELD-ON 16 or WELD-ON 3 is better for your joint, tell us the material, thickness and how the pieces will fit together.