The right way to make a plastic part depends on its shape and how many you need. Here’s how we think about it, and we’ll tell you if printing isn’t the answer.
Short answer: printing shines on complex shapes in low volumes, and on large parts a desktop printer can’t make. Simple parts from sheet or panels are often better made another way.
| Method | Pick it when | Keep in mind |
|---|---|---|
| Large-format 3D printing | One-offs or low volumes. Complex curves, compound shapes or internal detail. A part too big for a desktop printer. You want to review the design and change it before production. | New for us. Layered surface (we can mill it smooth). |
| CNC routing and cutting from sheet | Flat or simple parts from sheet or panel. Sharp, accurate cut edges. | Complex 3D shapes need extra setup or a mold. |
| Fabricated sheet and panel | Mostly flat sides with few curves. Reliable and quick to make. | Compound curves are hard to make this way. |
| Thermoforming | Several of the same curved part, where a mold pays off. | Needs a mold first, which takes setup time and money. |
| Traditional molding (injection or composite) | High volume of the same part. | Tooling makes one-offs expensive. |
| Ordering from the mainland | Standard parts and large volumes. | Ocean freight adds time and cost, and you don’t control the schedule. |
| Desktop 3D printing | Small parts. | Too small for large work. |
We’ve cut, formed and finished plastic in Iwilei since 1950. One shop prints, mills, welds and finishes, so quality stays in our hands. Nothing ships across the ocean, and you can review visual edits before production starts.
Printing is not for every job. If a CNC-cut or fabricated part is the better answer, we’ll say so.
Do you still do CNC and fabrication? Yes. We cut, route, form and finish plastic in our own shop, and printing is one more way to make a part.
Is printing cheaper than a mold? For one custom piece it often avoids the cost and time of a mold. For many of the same part, a mold or thermoforming can make more sense.
Can I send a drawing and ask which method fits? Yes. Send it on our Contact Us page and we’ll tell you what we’d use.
Send us your measurements on our Contact Us page. You can attach files. Prefer to talk it through? Call our office and speak with a friendly, helpful representative, or visit our showroom.
See what we’re adding: Large-format 3D printing, made in Honolulu.
