LOCAL

Allied Plastics Supply

    10828 Shady Trail
    Dallas, TX 75220
    http://www.alliedplastic.org/
    Notes from themitch22: "Allied Plastics Supply has been my go-to for plastics. It’s also 5mi from DMS."
    Notes from various: called in orders works better than walk-up; will deliver if over $50.00;
    Notes from talkers: gives away scrap, if any available
    Notes from john_marlow: the second location that Allied lists on their website is only an office, with no materials available.
    Noted as (possible) supplier for "dual color 2 layer" plastic

E & D Plastics

    1010 E Levee St
    Dallas, TX 75207
    Phone (214) 742-6032
    https://www.edplastics.com/
    Primarily a fabricator

E & T Plastics

    1174 Security Drive
    Dallas, TX 75247
    Phone (214) 622-6263
    https://www.e-tplastics.com/

estreetplastics.com

    151 Mark Ln
    Royse City, Tx 75189
    Phone: 972-722-2513
    http://estreetplastics.com/
    Notes from Lampy: "Don’t think they carry ABS sheet, just Acrylic (Plexiglass), Polycarbonate (Lexan) and Polystyrene."

Grimco, Inc.

    1625 Crescent Cir #310
    Carrollton, TX 75006
    Phone (800) 542-9941
    Fax (800) 760-5575
    Notes from Haley Moore: Vinyl supplier, mostly warehouse, but happy with walk-up customers, too; reference transfer vinyl paper.

Johnson Plastics

    3361 Boyington Drive, Suite 200
    Carrollton, TX 75006
    972-418-8634
    800-869-7830
    800-869-7800
    https://www.johnsonplastics.com/locations
    Notes from NickSilva: "Do a will-call for [address above]."
    Noted as distributor for Rowmark (dual color, 2 layer, etc.)

Nationwide Plastics, Inc.

    2001 Timberlake Dr
    Arlington, TX 76010
    P 214-239-3870 
    P 800-782-1836 
    F 214-239-38710
    https://www.nationwideplastics.net

Port Plastics

    6312 Airport Fwy Bld C
    Dallas/Ft Worth, Texas 76117
    P 817-834-7678 
    P 800-834-9391 
    F 817-834-7680
    http://www.portplastics.com/
    Listed as "acrylics" supplier

Professional Plastics

    2060 Luna Rd #120
    Carrollton TX 75006
    214-575-5400
    http://www.professionalplastics.com

Regal Plastics

    9200 N Royal Ln
    Irving, TX 750631
    (800) 441-1553
    http://www.regal-plastics.com/
    Notes: appears to require a minimum order


Masking Paper

https://www.amazon.com/Transfer-Layflat-Adhesive-American-Made-Application/dp/B085635HFN


ONLINE
Note that some suppliers above are also "online" but should have physical, walk up windows.

Amazon.com

    Address 1
    Address 2
    Phone
    https://www.amazon.com/
    Notes: be specific when searching, e.g. "polystyrene sheets" or "pvc pellets" as opposed to "vacuum former plastic".

Inventables.com

    Address 1
    Address 2
    Phone
    https://www.inventables.com/
    Notes: offers 2-layer, 2 color ABS sheets

TAPPlastics

    Hours of Operation: 8 am – 5:00 pm PST, Monday-Friday
    Address 2
    P (888) TAP 7330 (US Only)
    P (209) 944-7432
    F (209) 944-7424
    https://www.tapplastics.com/about/contact


As a reminder:

(1) DMS accounts are not to be used for personal material purchases.
(2) DMS accounts are not to be used to get tax-free sales for personal purchases. Some vendors may offer this but you must insist on paying the tax.
(3) This means you. Reimbursing DMS for a personal material purchase is not even an option.