 In the years he spent in Timișoara he produced "The Apostolic Milk", a catechism dedicated to his infant son in 1763.In 1764, Orfelin came to Dimitrios Theodosios's publishing house in Venice, where he spent the next six years before moving back to Karlovci.Theodosios, who began to print Serbian books in Venice in 1758, needed Orfelin to edit and proofread the abundant material being brought to him.