How do I prepare surfaces for maximum strength?

Cleanliness is Key

Start by ensuring both surfaces are thoroughly cleaned. Remove all traces of grease, oil, dust or fingerprints using a suitable solvent (like isopropyl alcohol) or warm, soapy water. Allow the surfaces to dry completely. Any lingering contaminants can interfere with adhesion and reduce bond strength.

Improve Bond with Light Abrasion

For most materials—especially metals, plastics, and glass—lightly abrade the surfaces using fine sandpaper (typically 120–220 grit). This creates a slightly rough texture, increasing the area for epoxy to grip. After sanding, wipe away dust with a lint-free cloth and check for residue before you proceed to gluing.

When Preparation Matters Most

• Bonding critical repairs, high-load or moving parts.
• Adhering non-porous materials like metals or plastics.
• Applications where longevity and water resistance are necessary.

Proper prep helps products like “Klebfix” Fast Epoxy Glue achieve their rated performance on a variety of surfaces.