Exhibit 23.3

Your Vision Our Focus

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use of our report dated May 10, 2024, relating to the financial statements of Evtec Aluminium Limited (the “Company”) as of and for the years ended June 30, 2023 and 2022, in Blackboxstocks Inc. Registration Statement on Form S-4.

We also consent to the reference to our firm under the heading “Experts” in such Registration Statement.

/s/ Turner, Stone & Company, L.L.P. Dallas, Texas

May 10, 2024

Turner, Stone & Company, L.L.P. Accountants and Consultants 12700 Park Central Drive, Suite 1400 Dallas, Texas 75251 Telephone:972-239-1660 ⁄ Facsimile: 972-239-1665 Toll Free: 877-853-4195 Web site: turnerstone.com      INTERNATIONAL ASSOCIATION OF ACCOUNTANTS AND AUDITORS