Snapmaker U1 Temperature-Controlled Heater

🔥 Snapmaker U1 Temperature-Controlled Heater

A temperature-controlled heater designed specifically for the Snapmaker U1, utilizing a PTC heating element combined with an EC blower fan to improve chamber temperature stability and airflow circulation.

By maintaining a warmer and more consistent enclosure environment, this setup helps reduce warping, improve layer adhesion, and enhance print reliability when working with temperature-sensitive materials.

The design features a modular structure for easy assembly, maintenance, and future upgrades, making it a practical chamber-heating solution for U1 users. It also mounts to the factory mounting points (bottom + side panel).

✨ Features

Improves enclosure temperature stability
Uses a PTC heater for reliable and self-regulating heat generation
EC blower fan provides consistent airflow circulation
Modular design for easy assembly and maintenance
Supports external temperature controller modules
Ideal for materials such as ABS, ASA, PA, PC, and other engineering filaments

📦 Additional Components Required

This project includes printed parts only. The following components must be purchased separately:

Component	Specification
PTC Heater	150W PTC Heater (220V, 92 × 31 × 25 mm), AMZ Keyword: “PTC 200w 92x31x25mm”
Blower Fan	7530 AC (EC) Blower Fan
Temperature Controller	AC Temperature Controller Module (XY-SA10-W, AC Powered, 10A Relay). AMZ Keyword: “XY-SA10-W”
Power Cable	Suitable for your local voltage standard (shown in the images: 0.75 mm² pure copper 2-core power cord with plug and stripped wire ends)
Wiring Terminals	High-temperature rated terminals recommended (6.3 mm female spade terminals × 3)
Fasteners & Accessories	As required for assembly (zip ties × several, 3 mm thick foam sealing strip × several)
Power Switch	Rocker Switch (2-position, 20A, panel cutout size: 28.5 × 10.5 mm)
Screws	M3×10 Countersunk Screws × 4M3×40 Button Head Screws × 2M3×12 Countersunk Screws × 2

🛠️ Assembly Overview

Print all required parts.
Install the 150W PTC heater into the heater housing.
Install the 7530 AC (EC) blower fan.
Complete wiring according to the temperature controller specifications.
Mount the assembly in the designated location on the Snapmaker U1.
Set the desired temperature and begin operation.

Basic electrical knowledge is recommended for assembly and wiring.

建议在热风出口处黏贴隔热胶带 — Heat reflection/insulation tape is almost required for low temperature materials.

Fan duct needs to have 3mm foam padding to secure and block.

Model has existing mounting for cable management, makes it easy to route cables.

Wifi module can be mounted in the bottom. PTC heater installation as pictured. Foam insulation tape recommended to cover the top side of the fan.

The heater unit can be secured by bottom and side mounting.

Screw mounting per image, also available in instruction manual.

M3*12 screw mounts the side mount into the side panel

Assembly instructions are attached below in the attachments, wiring diagram can be referenced here:

📸 Performance

Air is drawn through the blower, passes across the PTC heater, and is then distributed into the enclosure to provide stable and even chamber heating.

This helps create a more controlled printing environment and can improve print quality when using temperature-sensitive materials.

When pairing with XY-SA10-W's App, temperature range can be controlled; cold to full 60+ chamber in 30 minutes. Temperature also stable at per-setting.

⚠️ Disclaimer

This project involves AC power and heating elements. Please ensure you have the necessary electrical knowledge before assembly and operation.

Improper installation or use may result in electric shock, short circuits, overheating, equipment damage, or fire hazards. Always ensure proper insulation, wiring, and temperature monitoring, and never operate the device unattended.

By downloading, printing, assembling, or using this model, you acknowledge and accept all associated risks. The author provides this design for informational and educational purposes only and assumes no responsibility for any damage, injury, or loss resulting from its use.

The Snapmaker U1 top cover shown in the images is a Beta version. The final production version may differ in appearance, shape, color, and overall finish. Images are for reference only.