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My Plastic Cement Glue Is Slow to Dry

Plastic cement acts as any other type of adhesive by gluing two objects together. Hobbyists use plastic cement for different craft projects, including model building and working with plastic toys. When the glue dries slower than you would like, you may have a problem with the humidity level in the room. Other factors also relate to the time required for plastic cement to finish drying.
  1. Humidity Problems

    • When you work with glue in a room or space with a high humidity level, the drying process naturally takes longer. Read the label on the plastic cement, checking for manufacturer recommendations on humidity. The high humidity adds moisture to the plastic cement and the liquid must evaporate before the glue dries. A simple remedy involves using a small fan. Place a circulating fan near the object and once you finish gluing, turn the fan on its lowest setting. Keep the fan placed near the object until it dries. The fan pulls moisture out of the glue and helps speed up the drying process.

    Wrong Usage

    • Using too much plastic cement may cause a longer drying process. Plastic cement is strong enough that it welds two objects together and creates a near-permanent bond. When gluing two objects together, apply a thin layer of the plastic cement to one piece and press the pieces together. If the glue spills out of the sides, then you used too much adhesive. Use only a small amount and add more as needed. It is far easier to add more glue than to remove glue from the object. Only use the glue on products the manufacturer recommends, as it will not work as effectively on wood or glass.

    Clamping Objects

    • Depending on the size and shape of your project, you may find it helpful to add clamps. Once you glue the two pieces together, attach a clamp to the sides. The clamp presses the two objects closer together and applies more pressure than your own hands. The clamps remain on the object until the glue finishes curing and keeps the glue in place, which forms a better bond.

    Warning

    • Check the label of the plastic cement carefully, looking for an expiration date. Many glues and adhesives now have an expiration date that indicates the best time frame to use the product. If the expiration date passed, then throw away the plastic cement and purchase a new bottle. The expired product does not work as effectively as newer adhesives.