Humbrol PP-DA Precision Poly Cement (solidified inside the bottle)

Solidified inside the bottle (unused)
Usually not recoverable: Most model glues (like Tamiya, Revell, etc.) can't be restored once dried, as the solvent has completely evaporated, leaving only the resin.
Trying to add thinner (not recommended): Some people attempt to add the original manufacturer's thinner or similar solvents (like MEK or acetone), but this is risky and may change the formula, bonding strength, or stability.

Recommendation: Click here to purchase an intact product.