A lot of knowledge and help here. This group had been over-run with off topic discussions but they seem to have cleaned up their act.

A great resource for owners of any size Asian-made mini-lathe. This is a popular group and they do a good job of keeping messages "on-topic".

A Yahoo Group group that was started to help those interested in electroplating as a hobby or as a small business.

Although primarily about topics related to model engine building of all types, there is a lot of information and expertise here about machining and metalworking

One of the best discussion groups about small Asian made mills

A nice place for discussing machining and metalworking. The forum for machine and tool manuals, books and videos seems particularly good. So does the forum for machine and tool reviews.

A comprehensive list of links, including many not found here.

A lot of members but not much message traffic. However, the archives and photo and file directories contain a lot of useful information about mini-lathe modifications and improvements.

A treasure trove of knowledge and information about metalworking and machine shops. Although this forum is mostly populated by those who are, or have been, in the business professionally, hobbyists will also probably find it to be a good resource.

This Usenet newsgroup is a good source of useful and interesting information about all aspects of metalworking (if you can ignore the spam). You can either read the messages in your browser or subscribe to receive them via email.

For owners and users of Taig lathes and/or mills

A forum for all skill levels and disciplines of the metalworking hobby.

A search of Yahoo Groups for "metalworking" results in dozens of discussion groups about all kinds of metalworking.