If you are developing an electronic product, you need two parts: a working board (PCB) and a custom plastic enclosure that surrounds it. Most companies have these two made in separate places — and that is exactly where the trouble begins: when the board is designed in one place and the enclosure in another, the connector holes do not line up, the mounting points are off, and the lid will not close. MARG’s difference is this: we produce both the board and the enclosure under one roof, so the two are designed to fit each other from the very start.

Why a Custom Mold? Why Isn’t an Off-the-Shelf Enclosure Enough?

Off-the-shelf (standard) plastic enclosures are cheap, but:

  • You are forced to lay out the connectors, buttons, LEDs and display according to the enclosure, not your board.
  • Your device’s appearance/brand stays generic.
  • Custom mounting, IP sealing and custom dimensions are usually not possible.

With a custom aluminum mold + injection molding, the housing comes out to fit your device exactly — and it is economical even at low volumes.

Board + Enclosure Under One Roof: MARG’s Difference

When the same team does the electronic PCB assembly (PCB + SMD) and the plastic injection mold:

  • Assembly fit: Screw lugs (bosses), standoffs, board height clearance and connector cutouts are designed together with the board — you never run into the “the board won’t fit in the enclosure” problem.
  • Tolerance control: Because the board dimensions and mold dimensions are matched in one place, tolerance stack-up is managed from the start.
  • A single point of contact: Coordination, delays and “whose fault is it” arguments between two separate suppliers disappear.
  • Fast iteration: When there is a small change to the board, the enclosure side is updated instantly.

This is an advantage you do not get at a standard mold shop or a standard board manufacturer — because the two are usually separate industries. MARG does both.

The Process: From Board to Enclosure

  1. Board + enclosure joint assessment — PCB dimensions, connector/button placement, target volume, environment (indoor/outdoor, IP).
  2. Housing design + DFM — wall thickness, draft angles, bosses/standoffs, lid fit, and a gasket groove if required.
  3. Material selection — usually ABS (economical) or PC (impact/temperature); a UL94 grade if flame retardancy is required.
  4. Aluminum mold fabrication — typically 500–2,000 USD, days to a few weeks.
  5. T0–T1 trial + production — 10–5,000 units; real assembly verification with the board installed.

For Which Products?

Sensor devices, control boxes, IoT modules, measurement/calibration devices, handheld terminals, in-panel modules — in short, any product with a custom PCB and low-to-medium volume. If you had the board produced at MARG, the enclosure design is even faster.

Let’s Talk About Your Board + Enclosure Project

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Frequently Asked Questions

Can I have a custom plastic enclosure made for my electronic device?
Yes. We produce a custom housing for your device with an aluminum mold + benchtop injection molding: the mold is typically 500–2,000 USD, for 10–5,000 real plastic parts (usually ABS or PC). It is ideal for products that do not fit a standard off-the-shelf enclosure and whose connector/button/LED placement must match your board exactly.
What is the advantage of having the board and the enclosure made in the same place?
When the fit between the housing and the PCB (mounting bosses, connector cutouts, screw lugs, height clearance) is designed by a single team, board-enclosure mismatches, tolerance errors and coordination loss between companies disappear. Because MARG does electronic PCB assembly + plastic molding under one roof, the board and the enclosure are designed together from the start.
Which plastic is used for the enclosure?
The most common in electronic enclosures are ABS (economical, easy to process) and PC/polycarbonate (high impact and temperature resistance); depending on the need, an ABS+PC blend or flame-retardant (UL94) grades can also be used. For outdoor/dusty environments, IP sealing is designed with a gasket.
Does an enclosure mold make sense for low-volume electronic devices?
At low-to-medium volumes (10–5,000), an aluminum mold is economical for exactly this range: without waiting for the tens of thousands of dollars and 8–12 weeks of a steel mold, you get an enclosure in the real production material and with a series-production surface finish. In some cases at very low volumes, 3D printing is also considered; we tell you transparently which one is right.