Exhibit 32.1




Pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Sigma Labs, Inc. (the “Company”) hereby certifies that, to his knowledge:


(i)           The Annual Report on Form 10-K of the Company for the fiscal year ended December 31, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d), as applicable, of the Securities Exchange Act of 1934, as amended; and


(ii)          The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


Date: April 16, 2013 By:   /s/ Mark J. Cola
    Name: Mark J. Cola

Title: President and Chief Executive Officer

(Principal Executive Officer)