SCIGRIP IPS Weld-On #3 Acrylic Solvent Cement

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  • This product is not for general consumer use.  It is an industrial product intended for use by industry.  Plastic-Craft Products reserves the right to substitute similar quantity Weld-On 4SC for Weld-On 3 or Weld-On 4 when ordered by an individual consumer.
  • This product must ship via ground transport.
  • This product may not be shipped into Los Angeles, San Bernardino, Orange, or Riverside Counties.  Plastic-Craft Products reserves the right to substitute similar quantity Weld-On 4SC for Weld-On 3 or Weld-On 4 when ordered for delivery to zip codes in those counties.
  • SCIGRIP® 3 is formulated for cementing acrylic (poly-methyl methacrylate) plastic to itself
  • SCIGRIP® 3 is used extensively in sign fabrication
  • It is also widely used in the POP industry (e.g. display), and in the fabrication and bonding of plastic containers, housewares, bottles and many other applications using the capillary method

IPS's Weld-On #3 is a water thin, very fast set solvent cement for acrylics. It will also bond polystyrene, butyrate, and polycarbonate to themselves. The initial bond forms very quickly but it will be approximately 24 hours before 65-80% of the ultimate bond strength is reached. The bond strength will continue to increase for several weeks.

Download - Technical Data Sheet


Substrate Material Aged Bond Strength, lbs/in2 (kg/cm2)
2 Hours 24 Hours 1 Week
Acrylic (Cast & Extruded) 800 (56.3) 2000 (140.6) 2500 (175.8)

Substrate thickness: 0.25 inch (0.64 cm). Bond area: 1.0 in2(6.45 cm2)


Color Clear Fixture Time 2 Minutes
Viscosity Water Thin Time to reach 80% of ultimate bond strength 24 Hours
Working Time 1 Minute Specific Gravity 1.330 ± 0.01
Shelf Life 2 years


GENERAL: Surfaces to be joined must be clean, dry, and fit intimately without forcing. Apply cement with syringe, eyedropper or brush. Assemble while parts are still wet. If cement is applied to one surface, let the two surfaces be in gentle contact for a few seconds to allow the cement to soften the dry surfaces, then press parts together in firm contact. Initial bonds form very quickly. 65 – 80% of the ultimate bond strength will be obtained within 24 hours. Strength will continue to increase for several weeks.

CAPILLARY METHOD: Parts are placed lightly together and cement is applied to the edge of the joint with syringe or eyedropper. By capillary action, the cement will flow a considerable distance, approximately 0.25 inch (0.64 cm), between two such surfaces. Allow a few seconds for the cement to soften the surfaces. Press parts firmly together.

SOAK METHOD: Vertically dip surfaces until softened (approximately 2 to 5 minutes), then join pieces firmly together.

  • In many cases, this cement dries too fast to apply by brush to the parts before they are joined.
  • If crazing is a problem, we suggest you consider annealing before cementing.
Download - Safety Data Sheet


This product is a non-flammable, very fast evaporating solvent cement. It is considered a hazardous material. In conformance with the Federal Hazardous Substance Labeling Act, the following hazards and precautions are given. Purchasers who may re-package this product must also conform to all local, state, and federal labeling, safety and other regulations.


Keep out of the reach of children. Do not take internally. Keep away from heat, spark, open flame and other sources of ignition. Contact with hot surfaces may produce toxic effects. Keep container closed when not in use. Store away from direct sunlight below 80ºF (27ºC). Use only in adequate ventilation. Avoid breathing of vapors. Atmospheric levels should be maintained below established exposure limit values. See Sections II and VIII of Material Safety Data Sheet. If airborne concentrations exceed these limits, use a supplied air respirator. Do not use a chemical cartridge respirator. For emergencies and other conditions where short-term exposure may be exceeded, use an approved positive pressure self-contained breathing apparatus. In confined areas, use a positive pressure self-contained breathing apparatus (SCBA). Do not smoke, eat or drink while working with this product. Avoid contact with skin, eyes, and clothing. May cause eye injury. Protective equipment such as gloves, safety goggles, and impervious apron should be used. Carefully read Material Safety Data Sheet and follow all precautions. Contains Methylene Chloride (75-09-2), Trichloroethylene (79-01-6) and Methyl Methacrylate Monomer (80-62-6). Methylene Chloride is considered a cancer causing material. OSHA has established special requirements for work place monitoring and protection when Methylene Chloride is used. Extent of health risk depends on level and duration of exposure, as well as individual sensitivity. Do not use this product for other than intended use. “Proposition 65 Warning:” This product contains chemicals known to the State of California to cause cancer. “Title III Section 313 Supplier Notification:” This product contains toxic chemicals subject to the reporting requirements of Section 313 of the Emergency Planning and Community Right-to-Know Act of 1986 and of 40CFR372. This information must be included in all Material Safety Data Sheets that are copied and distributed for this material.


Inhalation: If overcome with vapors, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Call physician.

Eye Contact: Flush with plenty of water for 15 minutes and call a physician.

Skin Contact: Wash skin with plenty of soap and water for at least 15 minutes. If irritation develops, get medical attention.

Ingestion: If swallowed, give 1 or 2 glasses of water or milk. Do not induce vomiting. Contact physician or poison control center immediately.


Shipping Information for One Liter and Above: Proper Shipping Name: Dichloromethane. Hazard Class: 6.1. Identification Number: UN 1593. Packing Group: III. Label Required: Toxic (Domestic USA and International).

Shipping Information for Less than One Liter: Proper Shipping Name: Consumer Commodity. Hazard Class: ORM-D.