GFRC Rollers blackmarbles separately approximately 10 to 15

separately approximately 10 to 15 minutes after the face coat slurry

but you may want to wait until the unthickened coat becomes tacky so a thick application of fairing compound does not slide on the surface

lustrous protective coating

This stone effect is not suitable for outdoor objects

Remember the middle (core) of the casting takes a while to fully solidify

GFRC Rollers blackmarbles separately approximately 10 to 15These GFRC Compaction Rollers are used to: Help remove air and compact GFRC Help ensure a good bond between face mist coats and backer coats Smooth, spread and level GFRC Help orient AR fibers in the mix