SDF Writer US-ASCII charset limit

So far so good. It seems like the node adds a bunch of metadata columns which I don’t need, but it’s easy enough to filter them out. Now all I need is a UTF-8 compatible SDF writer - the files I process tend to be large enough that @htsn01 's workaround ends up crashing due to full java heap space (which I can’t expand, because I can’t edit knime.ini…)

Thank you so much for implementing this. I will continue testing it and will let you know if I run into any problems.