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This custom manufacturing project is from our Brazilian client. It is a knob on the seat recliner of a vintage car, which is casted in once from bakelite material. Based on the samples sent by the customer, we replicated the same knobs as before.

Bakelite has a high hardness, is resistant to scratches and wear, and is not prone to deformation even after frequent rotation and adjustment. It can still maintain its appearance after long-term use. It can operate stably in an environment ranging from 120 to 150℃, and can withstand direct sunlight and equipment heat inside the cars.
Here are the 3D drawings of the recliner knob:


The knob structure is simple, the mold is quite easy to design and make, just the screw does require some effort. There are no screws on the market with exactly the same specifications, so they need to be custom-made.
After the drawing confirmed, we move on to make the mold. The process is same as the mold of die casting zamak product. Here are the pictures of the mold:


Belowing is the rought casting with inserted the steel screw:



After that, the knobs are sent for polishing , then get the finished knob:

Ningbo Joyo Metal Product Co.,Ltd. is specialized not only in metal components but also offer a wide range of plastic parts. Equipped with proficiency in multiple manufacturing processes, we are well-positioned to meet diverse custom requirements from clients across industries.
This custom manufacturing project is from our Brazilian client. It is a knob on the seat recliner of a vintage car, which is casted in once from bakelite material. Based on the samples sent by the customer, we replicated the same knobs as before.

Bakelite has a high hardness, is resistant to scratches and wear, and is not prone to deformation even after frequent rotation and adjustment. It can still maintain its appearance after long-term use. It can operate stably in an environment ranging from 120 to 150℃, and can withstand direct sunlight and equipment heat inside the cars.
Here are the 3D drawings of the recliner knob:


The knob structure is simple, the mold is quite easy to design and make, just the screw does require some effort. There are no screws on the market with exactly the same specifications, so they need to be custom-made.
After the drawing confirmed, we move on to make the mold. The process is same as the mold of die casting zamak product. Here are the pictures of the mold:


Belowing is the rought casting with inserted the steel screw:



After that, the knobs are sent for polishing , then get the finished knob:

Ningbo Joyo Metal Product Co.,Ltd. is specialized not only in metal components but also offer a wide range of plastic parts. Equipped with proficiency in multiple manufacturing processes, we are well-positioned to meet diverse custom requirements from clients across industries.
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