How Early Manufacturability Reviews Prevent Timeline Surprises

Let’s walk through a common manufacturing scenario: a product team finishes a part design and sends it to a manufacturer, expecting production to move quickly. Then the surprises start.

A feature doesn’t form the way the CAD model suggested it would.

A material behaves differently than it was expected to.

Tooling needs to be adjusted before production can begin.

What looked like a straightforward project suddenly adds weeks to the timeline.

Situations like this are common in plastic manufacturing, especially when designs move directly from CAD into tooling without a manufacturability review. Early Design for Manufacturability (DFM) reviews exist to catch those issues before they become schedule problems.

Where Timeline Surprises Usually Come From

Most manufacturing delays don’t appear out of nowhere. They’re often telegraphed early – if you know what to look for. These "surprises" usually come from:

• Design that is functional, but doesn’t work with the chosen manufacturing process
• Material selections that are not a good fit for the part design
• Tolerance expectations that aren’t a fit for the process
• Unexpected tooling modifications or new tooling needed

By the time these problems appear, project schedules are already moving. Fixing them can mean delays that ripple through the rest of the launch timeline.

How Does a Design for Manufacturability Review Prevent Timeline Surprises?

A Design for Manufacturability review is a structured check of whether a part design can be produced efficiently and reliably.

During this stage, the manufacturer reviews the design and evaluates how it will behave in the real manufacturing process. For thermoformed parts, this means considering how the material will stretch, where trimming will be needed, and whether the design introduces unnecessary complexity during production.

The goal is not to completely redesign the product. The goal is to confirm that the design can move smoothly into tooling and production without creating avoidable complications.

Why Early Reviews Save Weeks of Project Time

The timing of a manufacturability review is what determines its impact.

When the review happens early in the design phase, adjustments are typically small. A slight change can often eliminate a manufacturing issue before it causes problems. When the same issue is discovered later, the situation changes. Tooling may already be underway, prototypes may already exist, and production schedules may already be set. Going back to the design at that point creates delays.

Many timeline surprises come from discovering manufacturability challenges too late in the process.

When Should Teams Request a Manufacturability Review?

The best time to request a manufacturability review is before tooling begins, when the design is close to final but still flexible enough to adjust.

This often happens when a new plastic part is being prepared for production or when a team is transitioning from prototype to manufacturing.

Early collaboration gives manufacturers the chance to identify potential issues and recommend practical adjustments before they affect production schedules.

Related Content: Designing for Manufacturability During Product Development

How ICP Helps Teams Move from Design to Production Faster

ICP works with product teams during the early stages of production planning to review designs and identify manufacturability risks. By evaluating geometry, materials, and tooling approaches early, we help customers avoid problems that typically surface later in the process.

This early review allows teams to address potential production challenges before they affect tooling timelines or launch schedules. Instead of reacting to problems once production has already started, teams can move forward with a clearer path into manufacturing.

An early DFM review gives teams the opportunity to identify those risks while changes are still simple and inexpensive. For many projects, that early review is what keeps production timelines predictable and product launches on track.

If you're preparing a new part for production or exploring thermoforming as a fabrication method, a Design for Manufacturability review can help you move forward with greater confidence.

Request a DFM review from ICP to identify risks early and keep your project on schedule.

Industrial Custom Products is a one-stop-shop for custom manufacturing and plastic fabrication, including: prototyping and product development, die cutting and dieless knife cutting, thermoforming and vacuum forming, large part thermoforming, CNC plastic routing, fabrication and assembly and drape forming.