Festool pdc 18/4 made a loud SNAP

Joined
Nov 21, 2015
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1
Hi everyone. I have 2 questions.
1. I tried to drive a lag bolt (high torque, low speed) and I heard a loud SNAP coming from what I suspect the clutch (regular clutch for hex head). What happens then, the clutch won't open and my bit was left. A day later I tried to open it and there was no problem. What do you suppose happened?

2. I tried to make a hole using a 13mm spade bit into a 3cm stock, using max speed and max torque. Apparently it's not strong enough. Is this acceptable/ normal?

Thanks
 
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