A variety of thought screen helmets and hats
A variety of hats and helmets with their Velostat shielding.


Although leather aviator type hats work the best because they cover the whole head and enable tape to secure the Velostat, almost any type of hat that holds eight sheets of Velostat over your head will work.

You can also sew the Velostat to a cloth hat by using a sewing needle for leather which can be purchased at a fabric shop. Large hats with a band on the inside make good thought screens because all you have to do is cut and insert the Velostat into the inside hat band. You can then sew or tape the Velostat to the hat band.

Contact this website if you need directions for making thought screens from other types of hats.


Tape can be purchased at any hardware store, 2 inch wide tape is recommended. Suggested tape is Nashua All-Weather Duct Tape, part number 398 HVAC. If you use duct tape, try to purchase a professional grade duct tape, which has better adhesive and is stronger than cheap duct tape.

Leather Hats

The hat shown above (bottom center), a leather aviator's hat, also known by Motorcyclists as a "Rocky Bullwinkle Hat," is manufactured by Henschel Hat Company, Part number SKU 10-4. This hat is available at some motorcycle stores. The helmet also comes in size small/medium for small children. Similar leather hats are available from the suppliers listed below.

Amazon.com: search under leather aviator helmet or leather aviator hat.

Ebay: search under leather aviator hat, leather aviator helmet, or leather motorcycle hat.

Try to purchase hats from Amazon or Ebay without zippers, straps, or pockets because they are easier to work with.

Leather Pilot Helmet
Aviation Leathercraft - Flying Jackets - a Division of Moto-Lita Ltd.
Thruxton Airport, Near Andover,
Hampshire, SP11 8PW, England.
Telephone: +44 (0)1954 718686

Unlined Snoopy Leather Flying Cap
U.S. Wings
3390 Kent Road
Stow, OH 44224
Sales: 1-330-686-5973
Fax: 1-330-686-5970

Excellent source for cloth hats for day wear
7519 Convoy Court
San Diego, CA 92111
Tel: 888-970-1600

PLEASE NOTE: Amazon says they sell velostat hats but they are just plain hats without velostat. None of the hats are lined with velostat. Amazon will sell you velostat separately in sheets or rolls.

The ruler, scissors, sharp knife, and felt tip pens are available in any stationery store, craft store, or drug store.


Michael Menkin holding a roll of Velostat
Michael Menkin holds a 150 foot long, 40 pound roll of Velostat which costs $200. Some suppliers sell Velostat by the yard for a good price. Shop around for the best deal.

Michael Menkin is 6 feet two inches tall and weighs 220 pounds. He is a college graduate, honor student, former military officer, and a technical writer.



Velostat is sold by DESCO products.

Most suppliers only sell Velostat by the 150 foot roll. Some suppliers may sell Velostat by the linear foot or yard. You must contact individual suppliers to determine if they sell Velostat by the linear foot or yard.

DESCO sells Velostat but they still use the 3M part number 1704, 1706, or 1708.

Purchase a minimum of 3 linear yards if you are using 4 mil Velostat. It's a good idea to purchase an additional yard of Velostat just in case you make mistakes. If you use 4 mil Velostat, part number 1704, you must use 12 sheets for an effective thought screen. If you purchase 6 mil Velostat part number 1706, you need two linear yards for 8 sheets. If you purchase 8 mil Velostat, part number 1708, you only need a yard and a half for 6 sheets. Part number 1708 is thicker and harder to work with — and to sleep with.

To purchase Velostat in your area, search the internet by entering SCS Velostat 1706 36 X 150ft into a search engine. You cannot purchase Velostat in a hardware store or an electronics store.

You can get different widths, lengths and thicknesses of Velostat. Part 1706, 36" X 150' is recommended.

Here is the 2024 DESCO link

Ebay and Amazon.com are not recommended suppliers of Velostat.



Adafruit Industries sells thin Velostat, part number 1704, for $3.95 for an 11” X 11” sheet which is not large enough to line a thought screen helmet.
You need at 12 sheets if you try to make a thought screen helmet from these sheets. See https://www.adafruit.com/.

R.S. Hughes Company
7031 South 193rd St.
Kent, WA  98032

For a salesperson - info@hisoinc.com
6650 Concord Park Dr
Houston, TX 77040-4098
Phone 877-447-2650

Micro Parts and Supplies, Inc.
9606 Fox Shores Dr.
Algonquin, IL 60102
Phone 800-336-2131
Fax 847-516-0491

Less EMF Inc.
Sells Velostat by the foot
776B Watervliet Shaker Rd.
Latham, NY 12110
Phone 888-LESS-EFM (888-537-7363)
Outside USA: +1 (518) 608-6479
Fax: +1 (309) 422-4355
Email: lessemf@lessemf.com
Web: www.lessemf.com

NeutronCanada  (American Company)
220 Reese Road
State College, PA 16801
Sales: 800-813-4218
Tech Support and Returns: 1-814-231-3292
Fax: 814-861-8137

Industrial Electronics by Ross LLC
3256 S. 92nd St.
Milwaukee, WI 53227
(414) 276-1212
(414) 276-9778 (FAX)
(800) 242-7204 (within Wisconsin)
Email: indelect@execpc.com

General Tool and Supply
355 Treck Dr # 110
Tukwila, WA 98188

RS Americas
19625 61st Ave. S., Suite C105
Kent, WA  98032

Radar Electric
22214 20th Ave. S.E., Suite 101
Bothell, WA  98021

Platt Electric Supply
2757 6th Ave. S.
Seattle, WA 98134
Platt Electric Supply

Global Test Supply
312 Raleigh Street, Suite 9
Wilmington, NC 28412

In Canada contact:

Joli Dist. F. Hendel, Inc. Montreal, Quebec
Tel: 514.335.3172
Tel: 1.800.335.3172
Fax: 514.335.4013
Ottawa, Ontario
Tel: 613.224.4707
Fax: 613.224.4371

In the UK contact:

The Pi Hut

Raspberry Pi Store

Mann Enterprises LTD
Homefield Road
Haverhill, Suffolk
UK: GB15466199
Velostat page at The Pi Hut
For information on Velostat, go to Support Portal/Contact Us, select "submit a request," and fill in the form.

Cool Components Ltd.
250 York Road, Unit 208
London, SW113SJ
United Kingdom
Phone: 0871 288 7685
Email: sales @ coolcomponents.co.uk
Search for Velostat

Note: The two English companies above sell the same Adafruit small pieces of velostat (11" X 11") for a high price. You will need about 12 sheets to make a thought screen helmet.

2A Dunhams Lane
Letchworth Garden City
Hertfordshire SG6 1BE
United Kingdom
01462 672005
Desco Europe

If you have trouble obtaining materials for the thought screen helmet, email the inventor at contact. All requests for information will be answered.

This is a nonprofit, public service, do-it-yourself website. Michael Menkin has no financial connection or relationship with any sources listed on this website.