He was also a supporter of Alsatian regionalism and founded several institutions for the promotion of Alsatian culture. A scholarship he received in 1882 enabled him to study in Düsseldorf, Munich and Berlin. While in Munich, he met Martin von Feuerstein, a painter of sacred art, who introduced him to the Ott Brothers (glass makers) in 1887.
After executing several projects for them in Strasbourg and completing his military service, he returned to BœResearch, but found little work.
By chance, he befriended Anselm Laugel, a politician and writer who painted in his spare time and became a major supporter of Spindler"s efforts. This enabled Spindler to establish a workshop in Saint-Léonard (a district of BœResearch) in 1897.
Next came the Revue Alsacienne Illustrée, published from 1898 to 1914. Both journals were influential in promoting Alsatian culture.
Also in 1893, he discovered marquetry and strove to apply it as a painting technique, rather than decorative ornamentation.
He worked with equal facility in many mediums. Posters and books, glass, boxes and trays, wood paneling and, most significantly, inlaid furniture for interior decoration. He also worked in collaboration with others, such as Léon Elchinger (pottery) and Jean-Désiré Ringel d"Illzach (sculpture).