3/8 Diameter Jr. Pull Rods

Mayer wire wound rod.
l Total length: 12.
Film Width: 8-1/2.

Applicator wands are stainless steel tightly wound with stainless steel wire. The diameters of the rods and wires vary in size depending on the type of application. The diameters of the wires, in coiled form, regulate the thickness of the coating. During the manufacturing process, strict tolerances are maintained along with strict quality control. Each item is 100% inspected and individually packaged.

Characteristics:
The thickness of the coating is governed by the slot area between the wire coils. This slot or space allows the correct amount of coating to pass through. The amount that has passed flows out or freezes, leaving a smooth, uniform thickness on the substrate.
The slot area is determined by the size of the cable, so the larger the cable, the larger the slot. With this coating method, an exact coating thickness of fractions of a thousand and more can be achieved.
The desired thickness can be repeated over and over again with little waste of time and money. Applicator wands are available in any length, a variety of diameters and almost any wire size. They are made of ground and polished steel and the finest wires.

Drags are an economical method of making laboratory samples to determine coating thickness, substrate penetration, fluid compatibility, bond strength, etc. Drag rods allow the technician to perform these tests with a minimum of effort. The procedure is the next:

1. Attach (or tape) a sample of the most suitable substrate to the glass surface of the Drawdown plate.
   
   
2. Using a spatula, place a small puddle of coating liquid near the top of the sample sheet.
   
   
3. Immediately grab the ends of the reduction rod. Using the thumbs of both hands to prevent the rod from bowing or bending away from the sample, pull the rod down through the liquid pool spreading and metering the fluid across the sample sheet. As stretching is performed, observe the behavior of the coating and any possible reaction with the substrate. (Note: It may be convenient to construct a small cardboard tray to catch excess liquid as it is drawn toward the bottom edge of the drawing board.) Immerse the wand in the cleaning tray after use.
   
   
4. The coated sample is now ready for testing.
   
   
5. If the coating application is too thin, use a rod with a larger diameter wire. Therefore, if the coating is too thick, use a rod with a smaller diameter wire.