Comparison

Cyanoacrylate vs Solvent cement: which should you use?

Both are fast and both need a close fit. One glues surfaces together, the other melts them into one piece.

The short answer

Solvent cement on the plastics it actually dissolves, where it gives you a weld rather than a joint. Superglue on everything else, and on anything where a solvent would craze the surface.

Side by side

	Cyanoacrylate	Solvent cement
Strength	Medium	High
Flexibility	Rigid	Rigid
Gap filling	Low	Low
Water resistance	Water resistant	Not established
UV resistance	Not established	Not established
How it cures	Moisture cure	Solvent evaporation
Clarity	Clear	Varies
Typical working time	A few seconds	1 to 6 minutes
Typical full cure	24 hours	24 hours to several weeks
Maximum temperature	80C	60C
Needs clamping	No	Yes
Two part	No	No
Removable later	No	No

Highlighted rows are where the two genuinely differ. These describe the families in general, not any particular product, so check the datasheet of whatever you buy.

Choose Cyanoacrylate when

The materials are not solvent weldable: metal, ceramic, rubber, wood, most composites. A visible surface that a solvent would fog. Anything where you cannot hold the parts still for the full set.

Choose Solvent cement when

Both parts are the same solvent-weldable plastic: acrylic, ABS, polystyrene, PVC. You want the strongest possible joint in that plastic, and you can hold it closed while it welds.

What actually separates them

Solvent cement contains no adhesive. It dissolves the surface of both parts so they fuse and the plastic itself becomes the joint, which is why it only works on plastics it can dissolve and why it is stronger than any glue on those. Superglue sticks to the surface instead, so it works on far more materials and is far weaker on those two.

Cyanoacrylate

The full guide: what it is for, where it fails, and which materials it suits.

Solvent cement