In Louvain he cooperated with the engraver and goldsmith Gaspard Van der Heyden (also known as Gaspar à Myrica) in the construction of maps, globes and astronomical instruments.
Sa Louvain siya cooperated sa mga mang-uukit at panday-ginto Gaspard Van der Heyden (kilala rin bilang Gandaan ŕ Myrica) sa pagbubuo ng mga mapa, globes at astronomya instrumento.