Patent ID: 7267187

Claim:
A method for building a down hole cutting tool, the cutting tool including a cutting element support structure having at least one cavity formed therein to support a cutting element, the method comprising: inserting a base portion of the cutting element into the cavity; locating a braze alloy such that when heated the braze alloy melts and fills a space in the cavity between the cutting element and the cutting element support structure, the braze alloy comprising silver in an amount of at least 40% by weight, copper in an amount of at least about 10% by weight, at least one selected from the group of zinc and tin, and about 0.5% to about 10% by weight of thallium (Tl) or thallium (Tl) and at least one selected from the group of gallium (Ga) and indium (In); and heating the braze alloy such that it melts.