Custom fabrication

From CAD file to finished fiberglass.

This is the heart of Pro-Glas. Bring us a drawing, a 3D model, or a part that needs reproducing — we cut the pattern, build the mold, and deliver production-ready parts. All in-house, all in Rogers, Arkansas.

CNC router cutting a full-size tooling pattern at Pro-Glas

How it works

01

Define the part

Use case, environment, size, loads, finish, and how many you need. A drawing helps — a napkin sketch works too.

02

Engineer the tooling

We match the mold strategy to the part: open mold, closed mold, or a CNC-cut pattern for complex geometry.

03

Fabricate & validate

First articles are checked for fit, laminate quality, and finish before production runs begin.

04

Deliver production-ready

Parts ship finished, assembled where needed, and packaged for real-world installation.

CNC-cut foam pattern for a large custom part
Pattern
Production mold halves standing in the shop
Mold
Light RTM infusion under a purple membrane
Molding
Finished molded shells staged across the production floor
Production

Molding methods

01

Open Molding

Chop-and-spray and hand-laid laminating for large parts, deep draws, and production runs that need proven, economical tooling.

02

Closed Molding

RTM, Light RTM, and closed-cavity bag molding for two-sided finishes, tighter tolerances, and cleaner, more repeatable parts.

03

CNC Patterns & Tooling

Client CAD data becomes full-size CNC-cut patterns, plugs, and production molds — complex shapes without hand-carving guesswork.

04

Finish & Assembly

Gelcoat, paint-ready surfaces, bonded assemblies, and hardware installation so parts arrive ready for the field.

Chop-spray application into an open mold
Closed-cavity membrane molding on panel tooling

Common questions

What do you need from me to quote a custom fiberglass part?

The use case, rough size, quantity, and finish requirements. CAD data is great, but a drawing, a sketch, or the existing part you want reproduced works too — we translate it into CNC patterns and tooling in-house.

Do you build one-off parts or only production runs?

Both. We build one-off prototypes and concept pieces, and we build repeatable production tooling for ongoing runs. Many projects start as a single part and grow into a production line.

Do you make your own molds?

Yes. Patterns are cut on our CNC equipment, and molds are built and maintained in our own shop in Rogers, Arkansas — no outside tooling vendors required.

What molding methods do you offer?

Open molding (chop-spray and hand layup), RTM, Light RTM, and closed-cavity bag molding. We match the method to the part's size, finish requirements, and volume.

How finished do parts arrive?

Your choice: gelcoat finish, paint-ready surface, or fully finished and assembled with hardware installed. Every part is checked against the first article before production ships.

Where are you located, and who do you work with?

We're in Rogers, Arkansas, and we work with manufacturers, municipalities, and product developers across the United States — from equipment enclosures to full vehicle bodies.

Recent custom projects

Finished white fiberglass modular building outside the Pro-Glas facility

Modular Fiberglass Structures

Complete seamless-panel buildings — molded walls, roof systems, doors, and interiors — assembled at the shop and delivered by flatbed.

Race car body in gray primer

Full-Size Race Car Bodies

CNC-patterned, molded, and painted complete stock car replica shells — from digital model to rolling display body.

Fiberglass rover pods lined up in the shop

Autonomous Delivery Rovers

Client CAD data became CNC foam patterns, molds, and a fleet of finished fiberglass pods for a delivery train concept vehicle.

Glossy black fiberglass spa shell

Commercial Spa & Tub Shells

Closed-molded shells with two-sided finishes, produced on repeatable RTM tooling for consistent quality at volume.