Symptoms
- Saw shakes much more than usual
- Hard to control or aim accurately
- Vibration increases as the cut progresses
- Hands feel numb after short use
Likely causes
- CommonShoe not held firmly against the workpieceThe shoe stabilizes the saw; letting it float increases vibration a lot.
- CommonWrong or dull blade for the materialA struggling blade transmits more shock back through the tool.
- CommonCutting unsupported, flexing materialMaterial that bounces with each stroke amplifies vibration.
- PossibleWorn counterbalance mechanism inside the sawOver years of use, the internal balancing weight can wear and vibrate more.
- PossibleBlade bent from previous bindingA bent blade will vibrate noticeably even in good material.
What to do
- Press the saw's shoe firmly against the workpiece throughout the cut rather than holding the saw away from the surface.
- Switch to a sharp blade matched to the material being cut.
- Support or clamp the workpiece so it can't flex or bounce during cutting.
- Inspect the blade for visible bending and replace it if found.
- Use both hands and a firm grip to help absorb vibration and improve control.
- If vibration is excessive even with a good blade and firm shoe contact, have the saw's internal mechanism inspected.
Tools and parts
- Reciprocating saw
- Sharp blade for material
- Clamps
When to call a pro
If vibration remains excessive after checking blade and technique, a tool repair shop can inspect the counterbalance mechanism.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.