I tried both cased leather - had grooved it before when it was dry , then cased, then used stitcher while tooliing, and like stitcher I usualy used to use - groove, then damp the only that groove and finally used stitcher. In both cases I got nothing mora than just a serie of pinholes
May be I should omit a grooving?
PS: Next time I going for practice I'll take a shots of what I get with stitcher.