Hi Geoff
That sounds similar to my early experience of the saw. I was cross cutting some softwood and twice had kickback - with pieces (small, unclamped off-cuts) getting thrown about whilst the saw '******' (not too violently) in my hand. I attributed it to not using the clamp at the time but I note you experienced something similar whilst using the clamp. Only 1 kickback made sense to me - a hard knot in the wood - but since then I've not experienced any problems - kickback or otherwise - and I've been using it regularly over the the past few months.
FWIW, my thoughts are:
- The saw is powerful! On start-up the torque reaction pushes the saw upwards, so I tend to grip it a bit more firmly at that stage and then relax my grip. I suspect a sudden obstacle (e.g. the knot I encountered) temporarily halts/slows the blade and as it starts spinning freely again you get the exact same reaction as on start-up i.e. torque pushes the blade up. Add that to a perhaps natural tendency for the user to move backwards/lean back and you have perfect conditions for the blade to move up and back.
- On anything wider than a couple of inches or so I prefer to fully lower the saw past the material and then push the blade through it , rather than just lower it i.e. a chop-saw action.
All I can say in conclusion is that since my experience with the saw has grown (after the first few weeks) I've not experienced any kickback. Be interesting to see if any other non-Bosch SCMS users have had similar experiences.
Mike