Crafting with Concrete

Table of Contents Why blow-through happens: causes and mechanics Planning and safety checklist before you drill Choosing the right drill and settings Selecting the optimal drill bit for each substrate Techniques to control the exit and prevent chipping Workholding, supports, and jigs for consistent results Substrate-by-substrate step-by-step methods Accessories and shop solutions that make prevention […]

Table of Contents What “expired” epoxy means (chemical and practical definitions) Safety first: PPE, ventilation, and handling old epoxy Preparing a reliable small-sample test (materials, environment, and controls) Step-by-step mini-cup cure test (the core small-sample method) Quick qualitative checks before doing destructive tests (visual, smell, viscosity) Mechanical and functional small-sample tests (brittleness, hardness, adhesion) Diagnosing