POWER OF ATTORNEY
(For Executing Form ID and Forms 3, 4 and 5)

       Know all by these presents, that the undersigned hereby constitutes and
appoints each of Kristie Scott and Randy Altschuler of Xometry, Inc. (the
"Company"), signing individually, the undersigned's true and lawful
attorneys-in-fact and agents to:

       (1) Prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to the Securities and Exchange Commission (the "SEC"), a
Form ID and Forms 3, 4 and 5 (including amendments thereto and joint filing
agreements in connection therewith) in accordance with Section 16 of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the
rules thereunder, in the undersigned's capacity as an officer, director or
beneficial owner of more than 10% of a registered class of securities of
the Company;

       (2) Do and perform any and all acts for and on behalf of the
undersigned that may be necessary or desirable to prepare and execute any
such Form ID and Forms 3, 4 or 5 (including amendments thereto and joint
filing agreements in connection therewith) and file such forms with the SEC
and any stock exchange, self-regulatory association or any similar authority;
and

       (3) Take any other action of any type whatsoever in connection with
the foregoing that, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of, or legally required of the undersigned, it being
understood that the documents executed by the attorney-in-fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as the attorney-in-fact may approve
in the attorney-in-fact's discretion.

       The undersigned hereby grants to each such attorney in fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney in fact, or such attorney in fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this power of attorney and
the rights and powers herein granted. The undersigned acknowledges that the
foregoing attorneys-in-fact, and their substitutes, in serving in such
capacity at the request of the undersigned, are not assuming (nor is the
Company assuming) any of the undersigned's responsibilities to comply with
Section 16 of the Exchange Act.

       This Power of Attorney shall remain in full force and effect until
the earliest to occur of (a) the undersigned is no longer required to file
Forms 3, 4 and 5 with respect to the undersigned's holdings of and
transactions in securities issued by the Company, (b) revocation by the
undersigned in a signed writing delivered to the Company and the foregoing
attorneys-in fact or (c) as to any attorney-in-fact individually, until such
attorney-in-fact is no longer employed by the Company.

       IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of March 1, 2024.


By: 	_/s/James Miln___________________
       James Miln