Fabrication kits are general-purpose plastic welding kits for workshops, tank-building and one-off repairs. Each kit pairs a hot-air welder with a matched selection of welding rods, the welding shoes (speed nozzles) for the job, and supporting accessories — pressure rollers, brass brushes and a carry case — so you have a single, calibrated system rather than a box of mismatched parts.A fabrication kit is the right starting point if you weld a variety of plastics and want one outfit that handles most jobs. It removes the guesswork of building a setup piece by piece and gets you a strong, lasting weld first time. If you’re not sure which kit suits your work, see our guide on how to identify the plastic you’re welding and what to consider before you buy.