Machining a Hollow Brass Easter Egg

This project includes an official tutorial video for production. Everyone is welcome to refer to it for replication and collaborative creation.

This is an Machining a Hollow Brass Easter Egg project — a brass hollow Easter egg jewelry box designed to store small items such as rings and earrings. It also serves as a benchmark 4-axis simultaneous machining case for the Carvera Air desktop CNC machine, an artistic piece that combines precision manufacturing with vintage aesthetics.

You can complete the project using materials of your own choice. The uploaded model files include the overall assembly drawing, part drawings, and tooling drawings. The production process is relatively complex, suitable for experienced maker enthusiasts and long-term users of MAKERA devices. You may also further optimize the model based on your needs.

The core challenge of this project lies in 4-axis simultaneous curved surface machining, hollowing precision control, and thread fitting, rather than the finished product itself. Hopefully this brings you inspiration. Let’s unlock more creative gameplay together, and you are also welcome to co-create and iterate on this project.

Below is the project procedure description. You may download the NC toolpath files for this project, then complete machining by following the video tutorial and the procedures below:

Procedure 1: 4-Axis Raw Material Preprocessing

Clamp two brass bars on the 4-axis fixture: one 50 mm diameter × 60 mm length, and the other 50 mm diameter × 34 mm length. Upload and select the program: 1_GD. Start the machining task and wait for the machine to finish this procedure.

Procedure 2: Upper Cover – Internal Hollowing & Thread Engraving

Install the 3-axis module tool according to the video tutorial. Use a pressure plate to clamp a standard brass bar of 50 mm diameter × 34 mm length. Upload and select the program: 2_F3.175T1-Q3.175T3-M4T6. Start the machining task and wait for the machine to finish this procedure.

Procedure 3: Lower Base – Internal Hollowing & Thread Engraving

Install the 3-axis module tool according to the video tutorial. Use a pressure plate to clamp a standard brass bar of 50 mm diameter × 34 mm length. Upload and select the program: 3_F3.175T1-Q3.175T3-M4T6. Start the machining task and wait for the machine to finish this procedure.

Procedure 4: 4-Axis Hollow Engraving

Screw together the internal and external threads of the egg cover and base to form a spiral opening-and-closing structure. Follow the video tutorial to clamp the part using the 4-axis unit and an additional 4-jaw chuck. Perform tool setting and coaxial alignment calibration for the 4-axis rotary table.

The 3D probe forms electrical connection with the engraving machine frame and 4-axis accessories, enabling automatic workpiece zero-point detection by sensing the metal material.

Upload and select the program: 4_F3.175T1B3.175T3B2T2F1T5. Start the machining task and wait for the machine to finish this procedure。

個人化禮品 CNC 專案

木質戒指盒

傳統曼陀羅花紋樣木質杯墊

世界地圖戒指

雙面木製龍牌

木質盤龍柱飾

加工空心黃銅復活節彩蛋

爐石戰記鑰匙扣

禮盒 - 拉門

貓爪形狀鑰匙扣

火星塞鑰匙扣

亡靈圖騰鑰匙扣

刻有名字的結婚戒指托盤

重量片鑰匙扣

胖貓鑰匙扣

禮物收納盒

專用鑰匙扣

木發簪

馬頭鑰匙扣

無痛無收穫鑰匙扣

聖誕雪球