Is there a recommended surface preparation method for applying Smooth-On epoxy adhesives?

Article courtesy of Smooth-On, Inc.

A clean, dry surface is a necessary prerequisite for adhesive bonding. Porous materials are simple to bond to, providing they are dry. Non-porous surfaces, as found on metal and plastic materials, should be degreased, dried, and roughened by sanding, sandblasting or chemical etching.

We have prepared an extensive guide detailing how to prepare various substrates for epoxy adhesive bonding, which you can review here:

View our epoxy adhesive guide ›


This FAQ article is offered as a guideline and offers possible solutions to problems encountered during mold making and casting. No warranty is implied and it is up to the end user to determine suitability for any specific application. Always refer to the provided Technical Bulletins (TB) & Safety Data Sheets (SDS) before using any material. A small scale test is suggested to determine suitability of any recommendation before trying on a larger scale for any application.