The hammer head is made from Gidgee and brass. The striking faces are Maple and Ebony, which are attached by a sliding dovetail. For adjusting a plane, I use the Maple face for tapping the plane body and the Ebony face to tap and laterally adjust the blade. The handle is made from a piece of Victoria Ash, which is mortised through the head and wedged with Ebony. The hammer head weighs 6.5 oz.
Here are some links for other plane hammers:
Sterling Tool Works, http://www.sterlingtoolworks.com/sample-page/plane-hammer/
Lee Valley Plane Hammer, http://www.leevalley.com/en/Wood/page.aspx?p=46540&cat=1,41182
Glen-Drake Toolworks, http://www.glen-drake.com/Plane-Adjusting-Hammers/
