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A boost or gel is typically done using infrared heating technology. Boosting is common with thick substrate parts, and the infrared helps get a part to a desired temperature faster and more efficiently than convection by transferring the heat to the part directly, not with the use of air. Multiple coats of powder can benefit from the use of a gel oven between coats to force the coating to begin cross-linking and bonding without curing fully. This allows for the second coat to be applied on top of the first, without cross-contamination of powder coatings.