SCIGRIP Weld-On 3 Cement

Weld-On 3 Acrylic Cement – Water-Thin Solvent for Precision Bonding | TAP Plastics

SCIGRIP^® Weld-On 3 is a professional-grade, fast-setting acrylic cement designed to deliver ultra-clear, high-strength bonds in just minutes. Ideal for bonding cast and extruded acrylic (PMMA) to itself, Weld-On 3 is widely trusted by display fabricators, sign makers, POP (point-of-purchase) installers, and DIY crafters for its ease of use and reliable performance.

This water-thin, non-flammable adhesive works through a solvent-welding process—softening the surfaces to be joined and fusing them on contact. It is particularly effective in precision applications such as cementing letters to acrylic signs, plastic containers, housewares, display cases, and trim-capping. Thanks to its rapid set time and strong capillary action, Weld-On 3 is perfect for applications requiring tight seams and high optical clarity.

Key Features:

• High Clarity Bonding: Produces optically clear bonds ideal for transparent acrylic constructions.

• Fast-Setting: Initial bond forms in seconds; 65–80% of strength is achieved within 24 hours.

• Water-Thin Viscosity: Flows into tight joints with precision via capillary action—perfect for clean seams.

• Easy Application: Apply with syringe, dropper, or applicator bottle.

• Trusted by Professionals: Popular in sign-making, plastic fabrication, model building, crafts, and industrial manufacturing.

• Non-Flammable Formula: Safer to use in shop environments than traditional flammable solvents.

• Available Sizes: 1/4 Pint (4 fl oz), Pint (16 fl oz), and Quart (32 fl oz) metal cans.

Ideal For:

• Acrylic Signage & Displays

• Plastic Model Construction

• Retail Fixtures & POP Displays

• Plastic Containers & Packaging

• DIY Acrylic Projects & Repairs

Application Methods:

• Capillary Method: Place clean, dry parts together and apply cement at the joint edge; flows into gaps and fuses parts. Use with Small BD-25/2 Hypo Applicator.

• Soak Method: Dip surfaces for 2–5 minutes, then join for stronger bonding in flat sheet or butt joint applications.

Note: Weld-On 3 is not recommended for use with cross-linked acrylic or where extended working time is needed—consider Weld-On 4 for those projects.

Professional Tips:

• Use in a well-ventilated area and wear protective gloves.

• Prevent "blushing" (white marks) by avoiding high humidity conditions.

• For enhanced safety, always test fit parts before applying cement.

TAP Plastics proudly offers SCIGRIP Weld-On 3 to customers across industrial, commercial, and creative sectors. Whether you're bonding intricate display cases, repairing acrylic furniture, or constructing museum-quality exhibits, Weld-On 3 offers unmatched performance and clarity.

Order online or visit your nearest TAP Plastics location to find the right size for your project.
Questions? Contact us for expert assistance with plastic adhesives and fabrication supplies.

Not for sale in California South Coast Air Quality Management District (SCAQMD), due to rule 1168.

Click here for Cementing Instructions.

Click here on How to Open & Pour Solvent Cement. 

Click here for SCIGRIP Weld-On 3 Cement Technical Data Sheet.

Click here for SCIGRIP Weld-On 3 Cement Safety Data Sheet.