This is NOT an inducement for your group to leave Yahoo. I have just moved my Photogravure Yahoo group to .io. There is a thriving photogravure group on Facebook but some people would rather eat nails than join Facebook. That's what this new group on io is about. If you know anyone interested in any approach to the photogravure process who will not join facebook, please steer them in this direction. Otherwise the facebook photogravure group is the place to be.Thanks.
https://groups.io/g/photogravure/topics
David Kachel