Enclosed or Open

An enclosure keeps warm air around the part, so ASA and ABS cases don’t warp or crack. PLA and most PETG print fine in the open.

Build Volume

Most ESP32 cases fit in 150 mm. A 220 to 256 mm bed covers wall-mount panels, display bezels and multi-part prints in one go.

Auto Calibration

Automatic bed levelling and flow calibration mean you spend time on your firmware, not on tuning the printer.

Hotend Temperature

300 °C or more opens up ASA, ABS, PC and nylon. A hardened nozzle is needed for carbon-fibre filled filament.

Dimensional Accuracy

Snap-fit lids, M2 and M3 screw bosses and USB cut-outs only work if the printer holds its dimensions within a few tenths of a millimetre.

The K1C is Creality’s enclosed CoreXY printer built with carbon-fibre filament in mind. Its clog-free direct extruder and 300 °C hotend handle PLA-CF and PETG-CF out of the box, which make stiff, matte, very professional-looking cases and brackets. It prints at up to 600 mm/s, levels itself, and an AI camera watches for failures. The 220 x 220 x 250 mm volume is a bit smaller than the P1S, but plenty for ESP32 cases and display housings.

If your projects live indoors and you print mostly PLA and PETG, the A1 gives you the same 256 mm build cube as the P1S in a cheaper, open-frame design. Full automatic calibration and active flow rate compensation give accurate walls and holes with no manual tuning, which matters for tight USB-C cut-outs and screw bosses. It’s quiet (rated at 48 dB or less in silent mode), and the optional AMS lite adds four-colour printing. Being open, it’s not the right tool for ASA or ABS.

Most ESP32 enclosures are smaller than a deck of cards, so the A1 mini covers the vast majority of them in a printer that fits beside your soldering station. Its 180 mm cube is enough for DevKit cases, sensor housings, XIAO and C3 mini cases, OLED bezels and battery holders. It calibrates itself, has a tool-free quick-swap nozzle and makes a great first printer. Large panels and long DIN-rail housings won’t fit, and like the A1 it’s open frame.

A resin printer is a different tool: instead of melted plastic it cures liquid resin with a 7 inch 9K LCD, giving smooth surfaces and detail no FDM printer can match. That makes the Mars 5 Ultra ideal for tiny wearable cases, button caps, light pipes, engraved front panels and prototypes that need to look like a finished product. It levels automatically, sends jobs over Wi-Fi and has an AI camera. The trade-offs are a smaller build area, standard resins that are more brittle than PETG, and the mess of washing and curing with gloves and good ventilation.

The Ender 3 V3 SE is the lowest-cost way into 3D printing that’s still pleasant to use. It adds the upgrades older Enders lacked: CR Touch automatic levelling, a Sprite direct extruder that handles PETG and TPU well, dual Z-axis motors and automatic filament loading, with speeds up to 250 mm/s. It assembles in a few minutes and prints good PLA and PETG cases. Expect a little more hands-on tuning than the Bambu Lab printers, and its hotend isn’t meant for high-temperature materials.

When you need big parts, the K2 Plus offers a huge 350 mm build cube inside a heated enclosure. That’s room for full control panels, 7 inch display housings, multi-board racks, wall plates and robot chassis in a single piece. A 350 °C hotend and active chamber heating handle engineering filaments, dual AI cameras monitor the print, and Creality’s CFS filament system adds multi-colour and multi-material printing. It’s large, heavy and an investment, so it only makes sense if you regularly print beyond 256 mm.

One printer that does it all

The Bambu Lab P1S: enclosed, fast and reliable for every common filament.

Outdoor and high-heat projects

The QIDI Q1 Pro with its heated chamber for ASA and ABS.

Indoor cases on a budget

The Bambu Lab A1, or the A1 mini if space is tight.

Product-quality prototypes

Add the ELEGOO Mars 5 Ultra for tiny, detailed parts.

Do I need an enclosed printer for ESP32 cases?

Not for indoor projects. PLA and PETG print well on open-frame printers like the A1. You need an enclosure when you want ASA or ABS, which are the right materials for outdoor, sunny or hot locations.

Which filament is best for electronics enclosures?

PETG is the best all-rounder: tougher and more heat resistant than PLA and easy to print. Use ASA for outdoor parts because it resists UV. PLA is fine for prototypes and indoor cases that stay cool.

Can a 3D printed case affect Wi-Fi or Bluetooth range?

Plain plastics like PLA, PETG and ASA have very little effect on 2.4 GHz signals. Avoid carbon-fibre filled filaments and metal-filled filaments directly over the ESP32 antenna, as they can attenuate the signal.

How do I mount an ESP32 board inside a printed case?

Measure the board’s mounting holes with calipers and print standoffs with holes sized for M2 or M2.5 heat-set inserts or self-tapping screws. For boards without holes, print a slot or clip rail that grips the PCB edges.

Should I choose FDM or resin?

Choose FDM (every pick except the Mars 5 Ultra) for most enclosures: it’s cleaner, cheaper per part and the materials are tougher. Resin is best as a second printer for small, highly detailed parts.