Everything between your drawing and your finished part.

We take on the parts of the job that are easy to underquote and hard to deliver on: mold design, material behavior, and the discipline to run the same part the same way, shift after shift.

Injection molding presses on the Quest Plastics production floor

Molding and materials

Production runs across a range of press sizes, with insert molding and unscrewing molds available for parts that need more than a straight-pull cavity.

Ask about your part

Tooling

Custom molds and support tooling built for the production volume you actually need: parting-line and hot-runner molds, hydraulic core pulls, and side actions.

Talk tooling
Injection mold plates on the tool room bench

Design and prototyping

We work from your CAD files, sketches, or an existing part, and 3D-print prototypes in house, as soon as the next day, so you can check fit and form. We help settle material, wall sections, and moldability before a mold is ever cut.

Start a design conversation
Design3D printDelivered

Value-added services

Secondary operations to hand you a finished part, not just a molded one, so the piece that leaves our floor is the piece that goes on your line.

See what we finish in-house
EngraveAssembleKit & packYour line

Finished parts, ready for your line.

Molding is only part of getting a product built. We handle the work after the press, so what reaches you is ready to use.

Assembly

We assemble molded parts, and the components that go with them, into sub-assemblies. That means fewer part numbers for you to buy, receive and track.

Laser engraving

Part numbers, logos, dates or serial numbers engraved permanently into the part, so it arrives identified and traceable.

Kitting

We combine the parts you specify into one kit per assembly, counted and packed, so your line pulls a single package instead of several.

Scheduled local delivery

We bring parts to your door a few times a week, timed to when you are ready to assemble. No warehouse space, no waiting on a container.

Need a different finishing step? Mention it in your quote request and we will tell you whether we can do it.

Already have a mold? Bring it to Quest.

Our tool room receives, inspects, repairs and qualifies molds built in China, Mexico or anywhere overseas, then runs your parts here in Connecticut.

ChinaSE AsiaIndiaTaiwanMexicoEurope Waterbury, CT

24 presses. Running around the clock.

2223 Thomaston Ave, Waterbury. Two shifts keep committed volumes on schedule, and unattended cycles run overnight.

Presses
24
Your job is scheduled a week out with room to spare, and there is open press time to add a program or absorb a rush order without bumping anyone.
Schedule
2 shifts + lights-out
Production beyond a single shift, with unattended cycles extending capacity overnight.
Your files
CAD-native
Send native files, drawings, sketches, or an existing sample part. Whatever you have on hand.
Injection presses under the overhead cranes on the Quest Plastics shop floor
Quality inspection bench with stereo microscopes next to a molding press

Consistency is the product.

A part that is right the first time is worth more than a part that is right eventually. Our process is built around catching drift before it reaches your dock.

Process control

Set parameters are monitored run to run, so the part you approved in the first article matches the part in run five hundred.

Material discipline

Resin handling, drying, and traceability practices built to keep material properties consistent across a production run.

In-process inspection

Parts are checked against print at defined intervals during the run, on our own inspection bench, not just at the end of it.

A local shop that delivers.

We have been molding parts and building tools in Waterbury since 1987. We are close enough to bring your parts to your door ourselves, so we do.

Local delivery
A few times a week
Local manufacturers get their parts straight from our floor on a steady schedule, timed to when they are ready to assemble.
Compared with overseas
Nothing to store
Buying from overseas can mean holding up to nine months of inventory. Ours arrive when you need them, so there is no warehouse space tied up and no waiting on a shipment.

The people who quote your job are the same ones who answer the phone. Call 860-489-1404 and talk to someone who knows your parts.

Aerial view of the Quest Plastics building at 2223 Thomaston Avenue, Waterbury, Connecticut

Send us your part. Get a same-day quote back.

Upload a drawing or tell us what you know. A real person reviews every request and replies the same business day.

About the part

Drawing (optional)

For PDF drawings we read material, weight and quantity off the title block and fill in the fields below. For images, fill in the fields and we will cross-check against the drawing.

Hot runner mold?
Do you already have a mold for this part?

Where to reach you

Not ready to send a part? Let’s talk first.

No drawing, no specs, no files. Tell us what you are working on, or just ask a question. A real person replies the same business day.

Prefer to call?

860-489-1404
Sales@Questplastics.com

2223 Thomaston Avenue
Waterbury, CT 06701