I know all of you have discovered things you should not have done in clock repair. I wish someone would have told me about some of these years ago. I will offer a few and hopefully some of you will add to the list.
DO NOT:
1. Use WD-40 on a clock
2. Open a box of bushings up side down
3. Use a loose key to wind a clock
4. Open a movement without springs let down
5. Disassemble without many photos
6. Punch holes in plates to close holes
7. Force pivots into position
8. Oil anything but the pivots and pallets
9. Work in low lighted area
10. Bend levers without knowing their function
DO NOT:
1. Use WD-40 on a clock
2. Open a box of bushings up side down
3. Use a loose key to wind a clock
4. Open a movement without springs let down
5. Disassemble without many photos
6. Punch holes in plates to close holes
7. Force pivots into position
8. Oil anything but the pivots and pallets
9. Work in low lighted area
10. Bend levers without knowing their function