Unused disposable 5ml syringes for injection casting with epoxy resin or polyester resin. Ideal for bubble free degassed resin in small parts castings. Basically degass the resin and pressure inject the resin. Provide air vents with tiny plastic tubes if design is intricate.
Other uses are with superglue to fill or glue wood cracks, oiling small tools joints and hinges, marbling with color concentrates.