Many two-part adhesives color each component differently so a uniform final color proves good mixing. Streaks of the resin or hardener color mean poor mixing from too few mixer elements, too fast a dispense, a hand mix that skipped the cup edges or a leading side on a cartridge. Marbled areas cure soft or not at all.
Bead's marbling white and gray, that mixer's too short for this ratio, grab the long ones.
Also heard as
- streaking
- swirling
Related terms
Static mixer
A disposable nozzle full of fixed baffles that mixes two adhesive components as they are pushed through.
Off-ratio
Describing a two-part adhesive dispensed with the wrong proportion of resin to hardener.
Gummy
Describing an adhesive that stayed soft and rubbery instead of curing hard.
Mix ratio
The proportion of resin to hardener in a two-part adhesive, given by volume or by weight.