Sorry- We do not provide services to the public

We are a small family owned manufacturing company located in San Angelo, TX. All of our products are engineered, prototyped, built, marketed, and distributed in house. Our state of the art facility uses the most modern 3D modeling software. Additive and subtractive manufacturing processes are utilized to create prototypes and short run production parts. We private label for several billion dollar companies.
Our manufacturing facility consists of the following:
3 - 4 axis cnc mills
CNC router
4- 36" laser machines
Various 3D printers
Mig, tig, and arc welders
Powder coating and anodizing capabilities
Metal lathes, drills, iron-workers, hydraulic punches
Too many small machines to list

​We manufacture the following:

Fill-O-Matic 2000

Swimming Pool Water Level control valve

Twin Hornet/Hornet 45 & 66 Heaters

Intrinsically safe waterproof heaters.

These are the only waterproof engine room heaters on the market!

The Twin Hornet model contains two of each operational component.

Twin Hornet 22 & Quad Hornet 24

Safe aircraft engine pre-heaters & in-flight DC heaters

12V DC, 24V DC, 120V AC, 240V AC

SuperCool Slide Rule &

SuperCool HVAC APP

#1 slide rule and app in the HVAC industry

Various tools used in the HVAC industry:


WB - DB wet bulb thermocouple

4020 Sul Ross St.

San Angelo, TX 76904


© 2016 by DesignStein LLC