Most home sewing machines can handle neoprene between two to three millimeters. Once you get to 4 millimeters or higher in thickness you might need to use a heavy-duty sewing machine. If the fabric is called neoprene but it’s thin, chances are you’re using a scuba net.
Insert a 16/100 jean/denim needle into the needle casing. Smaller, weaker needles will cause tangles and break during stitching because they are not sharp enough to pierce through the layers of neoprene. Wind two or three bobbins and thread your machine with 100% polyester or heavy-duty nylon thread.
The typically process for using these glues/cements are cover both surfaces with the cement, let it dry completely, and then stick them together (good luck getting them apart). In this case, if you want a less permanent solution, use rubber cement only on the neoprene rubber side.
Because scuba fabric is prone to snagging or slipping on a sewing machine, due to its unique, smooth texture, it is best to use either a ballpoint or stretch needle when sewing scuba fabric.
Scuba is made with a very fine knit gauge and smooth thread, which gives it an extremely smooth finish. The finish also gives the color a matte quality. The term scuba is often used interchangeably with the term neoprene.
Neoprene does not tend to wrinkle so there is usually no need to iron. If required you can iron briefly with a pressing cloth. Keep in mind that it is an insulating material so it will suddenly get extremely hot. Therefore do it with extreme caution and do not stay in the same place for long.
Most wetsuits are made from neoprene, and this is material that you can’t simply cut and sew in the same way you might adjust a hem at the bottom of a pair of trousers or a skirt. Primary among the differences is the way in which the seams on a wetsuit are stitched.
Originally produced by the American DuPont Corporation, Neoprene is a brand name of polychloroprene, which is used as a substitute for rubber. Among other things, Neoprene is entirely waterproof, which makes it an ideal material for wetsuits and other gear designed to insulate against wet and cold environments.
Wetsuit repair is simple and quick with Aquaseal NEO. Previously known as Seal Cement, this black contact cement is formulated to permanently bond with neoprene and other coated materials. With this flexible liquid adhesive, repairing neoprene gear can be done within half an hour.