My name is Cory Kaufman. I was surprised to see this string on the forum. I made the test website a while ago and posted to my personal Comcast webspace. I haven't gone live with selling the hammers quite yet. I've made quite a few pairs but only sold locally in Portland, OR so far. I do own the domain name "kaufmanhammers.com" and will be posting a new site in a month or so.
It was very encouraging for me to see your comments. I have a day job working in IT Support, but a real passion for woodworking and music. My wife and I have three kids under the age of Six (Twin 3yr old boys, and 5yr old daughter) so woodworking is also my "sanity" time in the evenings...
Regarding the hammers, I have three models I intend to make/sell:
1) Double-sided Wood inlay (like the current website)
2) Double-sided laminated head
3) Single-sided arc head
If you would like to be notified when I post the new website please send me an email at: firstname.lastname@example.org
Also, to answer a previous question the weight of the individual hammer is 0.2 oz. Sorry for the confusion, I didn't think anyone would really see the site yet.
Thanks again for the encouragement! Take care.