=====CNSI Innovation Workshop Benchtop Grinder User Outline===== This guide may be found online through the Innovation Workshop and microfluidics wiki. ====Location==== The benchtop grinder is located in 2448 Elings Hall next to Fume Hood #3. ====Safety==== * Part not secure and becoming a projectile * Thin parts (less than 0.07 in or 1.7 mm in thickness) can be pulled into the gap between the wheel and guide and cause the machine to seize. * Flying sparks, metal dust. * Metal reaches a high temperature during grinding. Apply coolant while grinding and let part cool before making skin contact. * Keep body parts clear of grinding discs. Use a tool to hold small parts. * Don’t wear bracelets, dangling articles of clothing, gloves or long sleeves while using the benchtop grinder. ====Training==== Attend the in-person training. ====Overview==== The grinder is a benchtop grinder with two abrasive discs. It is used to remove material ====User Guide==== **Sequence of operation:** - Wear proper PPE (safety glasses), face shield if needed - Mark workpiece, for example with a marker or scribe tool. - Turn on grinder. Stand to one side of the grinder until the wheel reaches operating speed. - Bring work into contact with the grinding wheel slowly and smoothly, without bumping. - Apply gradual pressure to allow the wheel to warm up evenly. Use only the pressure required to complete a job. - Move the work back and forth across the face of the wheel. This movement prevents grooves from forming. - Remove workpiece, turn off grinder - Use the shop vacuum to clean metal dust from work area. ====Frequently Asked Questions==== * What materials can I grind? * Ferrous (iron containing) metals such as steel and cast iron * Never grind softer metals such as aluminum or magnesium. * Never grind plastics or wood ====Accident Response==== * In the event of injury, contact lab staff and emergency services if necessary (?) ====Maintenance==== * Use wire brushes to clear metal residue out of grinding wheel * Adjust grinding wheel guide as wheel wears ====Supplies (In drawer labeled “Grinder Accessories”)==== * 2 silicon carbide 8” grinding wheels * 1 buffing wheel * Wire bristle brushes * Grinding compounds