1. Alternate (9)
6. Exculpation (5)
9. A method of painting using emulsions (7)
10. Threatening (7)
11. Plunder (7)
12. Unvarying (7)
13. For what reason (9)
15. Lacquer ingredient (5)
16. Tiny parallel grooves (5)
19. Extraneous (9)
22. Shoulder board (7)
23. Operation (7)
25. Retaliator (7)
26. Glowing (7)
27. Repeat an action or statement (5)
28. Turning point (9)
Down
1. A stringed instrument of India (5)
2. Woo (7)
3. Perform surgery on (7)
4. By surprise (5)
5. Compensation (9)
6. Devoid of intelligence (7)
7. A variant of an element (7)
8. One who can't sleep (9)
13. Barren (9)
14. Depose (9)
17. Any chemical used in reactions (7)
18. A brisk and lively tempo (7)
20. He's in on the secrets (7)
21. Popeye ate this (7)
23. Excellence (5)
24. Famous (5)