EXHIBIT 23.1 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated May 19, 2000, relating to the consolidated financial statements of Soligen Technologies, Inc. included in its Form 10-KSB. SINGER LEWAK GREENBAUM & GOLDSTEIN LLP Los Angeles, California September 26, 2000 7