Handheld Circular Saw Introduction

From CoMakingSpace Wiki

This is the content required for an introduction to our circular saws - 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:

Safety

Dangers

  • sawdust and small splinters can fly towards the operator and others
  • sharp and rotating exposed blade - will keep spinning for a bit after turning the power off!
  • kickback: if the blade binds with the material it can push the saw back towards the user - this happens usually, when the blade is pinched. Example video: https://youtu.be/OdW7vhYYSdM?t=95

Precautions

general:

  • hook up a shop vac, but be aware the dust extraction from our "Herkules" saw is very incomplete
  • wear goggles and ear defenders!
  • dust mask: depending on the material you're cutting
  • get a helper who can hold your cutoff (depending on the size it) so it doesn't fall down
  • make sure the cutting path is free of obstacles (except your workpiece of course)
  • let the saw start before touching the workpiece
  • keep the saw secure after your cut until is has come to a complete stop

plunge saw (Festool TS 75):

  • when doing a plunge cut make sure the rail/workpiece can't move sideways. This could cause the blade to bind and kickback.
    • attach the endstop to the rail to reduce the chance of kickback
  • use an appropriately sized riving knife (DE: Spaltkeil) when using a different blade
    • remove the riving knife for plunge cuts, otherwise it can get in the way

Demonstration

The tutor will show you these steps in detail:


Festool TS 75:

  • change cutting angle
  • change and lock cutting depth