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Hi Jon/Geoff, Many thanks for all the advice and help. I've decided to call it quits on the saw vibration for the moment. In truth it is unlikely that I will need to run at more than half speed anyway and at this speed the vibration level is acceptable

Hi Jon, Assuming I have done everything correctly here are a couple of pics of the Diamond saw. The balance weight really does not seem to do much in terms of reducing vibration no matter which orientation it is set in. AS soon as I get hold of a puller I will remove it and see what happens...

Hi Jon, I guess my word pictures are not as lucid as they could be:-) The balance weight is a 3" metal bar with a hole about 1/2" from one end. The shaft for the pulley passes through the hole and a grub screw secures the bar to the shaft. The bar extends from the centre of the pulley to the...

The saga continues. I've had a chance to try out a few things so, Jon, if you read this I'd very much appreciate your thoughts. The balance weight is a solid rectangular piece of steel 3" x 1" x 1/2" and is fixed to the pulley shaft so that it is vertical when the arms are at their lowest...

Many thanks for the reply Jon. It has certainly given me a few things to think about. I will strip the saw down this week and have a bit of a fiddle:)

I have an old Diamond 19 scrollsaw and it has severe vibration at anything over half speed. The counterweight on the drive shaft seems to be in the correct position (ie vertical when the saw is at its lowest point). The saw is bolted down well to a rock solid bench Does anybody have any ideas...