Hello dear nice people, thank you everyone for your help and advice, the product used was wood varnish with polyurethane, I used soda ash lightly moist, rubbed the wood with brush and left to act 5 Minutes and wash with water jet, scraped with glass wool, wash, dried 1 week outdoors, I am very satisfied with the result, it no longer smells the varnish, only the wood, later I would like Made of oil with linseed to protect it, this is my adventure that ends well, great respect and thank you to you cough, good continuation.