Bench Grinder Introduction: Difference between revisions

From CoMakingSpace Wiki

(→‎Wet Stone Grinding: Front is back...)
m (removed overspecific manual link)
Line 1: Line 1:
This is the content required for an introduction to our [[Bench Grinder|bench grinder]] - '''reading this does NOT replace the mandatory session with a [[tutor]]!''' It will make it a lot quicker though ;-)
This is the content required for an introduction to our [[Bench Grinder|bench grinder]] - '''reading this does NOT replace the mandatory session with a [[tutor]]!''' It will make it a lot quicker though ;-)


Let's begin! First off, make sure you have read the machine's [http://files.voelkner.de/800000-824999/823939-an-01-de-Doppelschleifer_125mm.pdf manual].
Let's begin! First off, make sure you have read the machine's manual (see InfoBoxes).


== Safety ==
== Safety ==

Revision as of 18:16, 23 May 2019

This is the content required for an introduction to our bench grinder - reading this does NOT replace the mandatory session with a tutor! It will make it a lot quicker though ;-)

Let's begin! First off, make sure you have read the machine's manual (see InfoBoxes).

Safety

Dangers

  • generation of hot sparks that are expelled in varying directions
  • sparks can fly far and deposit themselves as fine dust
  • the workpiece heats up and stays hot for a while
  • has no prevention of turning on after loss & restoration of power (keine Anlaufsicherung)
  • metal dust can be a health hazard when inhaled
  • aluminum can clog an abrasive wheel and cause it to overheat until it breaks
  • the workpiece can get caught on the wheel and get jerked from your hand

Precautions

  • always wear goggles to protect your eyes
  • depending on the work you have planned:
    • wear a proper dust mask if your material is harmful when inhaled
    • wear suitable gloves to prevent burns from sparks or the workpiece when you remove a lot of material
    • wear ear defenders if the noise level becomes uncomfortable
  • do not attempt to vacuum up sparks! The dust collection bag could catch fire
  • do not attempt to grind aluminum
  • let the wheels get to full speed before you start grinding
  • use the tool rests whenever possible
  • make use of the grinder's plastic spark guards, if available
  • do not force your workpiece on the grinding wheels, it will just overheat them and increase the risk of kickback
  • the blades you are sharpening become sharp. Do NOT test the sharpness with your finger or other body parts you want to remain intact.

Wet Stone Grinding

  • Before you start:
    • Ensure the water trough is filled properly with cold water before you start to grind (there is a "MAX WATER LEVEL" sign).
    • Tighten the knob on the front of the machine (turn it clockwise until the wheel begins to drive)
  • Keep an eye on the water level during grinding. Refill if needed.
  • Do NOT grind a blade with the stone being dry.
  • When you are done:
    • Remove the water. The stone is not supposed to be kept wet!
    • Disengage the drive system with the knob (turn it counter-clockwise) on the back of the machine.