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What are the risks of continuing to use this motor, in its current state? (Pardon the pun.)

Glad you could see the video, Joe. Sadly for me, it's not a pretty diagnosis. However, your thoughts are greatly appreciated.

I've found the Bosch good for the last 18 months, but now the motor is playing up: https://www.woodworkforums.com/f155/motor-problem-bosch-gcm-12-sd-professional-157036/

Hi Jeff,

Thanks for your thoughts.

The first thing I did was replaced the brushes, even though they don't seem too worn to me. The problem persisted.

Hopefully you can see the video, because...

The motor of my 18-month old Bosch GCM 12 SD Professional mitre saw is sparking. New carbon brushes don't make a difference. See the video here:

Sparking motor? Bosch GCM 12SD Professional -...