Lab-metal and Hi-Temp Lab-metal are used to patch, smooth, repair and seal items that need to be powder coated.
- Lab-metal will air dry in a few hours depending on air temperature, metal surface thickness and thickness of application/repair. Apply Lab-metal @ no thicker than 3/8 inch at a time. For powder coating processes in which the metal parts will NEVER be subject to temperatures higher than 425ºF, for durations NO LONGER THAN 20 minutes, for NO MORE THAN one oven pass, Lab-metal may be used.
- Hi-Temp Lab-metal MUST be used if a part is to be exposed to temperatures above 425ºF for more than 20 minutes in duration (or multiple high-heat exposures).
- Hi-Temp Lab-metal MUST be used in powder coating processes running at temperatures above 425ºF.
- Hi-Temp Lab-metal MUST be applied in thin layers (1/4 inch) and allowed to air dry for A MINIMUM OF 24 HOURS, then heat cured. This will force any remaining solvent out of the repair(about 400F for about 1/2 hour depending on thickness of application). Instructions are guidelines for curing. Alternative cure times may be appropriate depending on the size of the application.
Powder Coaters Important Tip
After Lab metal and Hi Temp Lab metal have fully cured, do not use anything to clean the filler with. These cleaners / solvents will likely attack the filler/repair and then come out through the powder in the oven which will cause bubbles/outgassing in the powder coating surface
PLEASE NOTE: If Hi-Temp Lab-metal is not completely dry when subject to heat, and if the product is not properly heat hardened, outgassing, cracking or bubbling is likely to occur. To speed up the drying process, force curing of Lab-metal and Hi-Temp Lab-metal can be done only after proper testing depending on thickness, temperature and cure time. Force curing may lead to outgassing and poor adhesion.