Applying Thermobond-3 Powder Coating Filler

powder coating filler product

Listed below is the procedure for applying Thermobond-3 powder coating filler for proper adhesion.

Thermobond-3 may seem hard and difficult to spread when it’s cold. It may also appear to be caking. To make the product easier to stir, spread and achieve a smoother surface without having to sand, simply follow these
instructions:

Remove lid and place 1 lb. jar into a common microwave oven for 15-20 seconds at a time. Not to exceed three intervals of 15-20 seconds. Stir product with a stiff (clean) instrument after each interval until the product becomes smooth and soft. Silly Putty consistency works best.

Do not leave the product in the microwave longer than 20 seconds at an interval, as material may begin to cross link and become very hard and thermocure.

When material is pliable and soft you may proceed with the application.

Thermobond-3 should be applied as follows:

Using a clean gloved hand (oils from your skin can effect product), place Thermobond-3 into cavity to be filled. Hold product under light pressure for 20-30 seconds. This pressure will allow product to conform to cavity shape resulting in excellent adhesion and no outgassing. Swiping product onto surface of metal will not produce the desired results.

Note: Do not apply more than 1/4 inch of Thermobond-3 at a time. Applying a thickness greater than 1/4 inch will result in product not curing properly.

Apply 1/4 inch of the product by holding it in cavity until it conforms, then cure according to the instructions listed on the website (see "Curing Instructions" page). This process can be repeated as many times as necessary to fill deeper cavities.

Please feel free to contact our office with any technical questions: 800-447-5008