If you want a clean and professional leather logo impression, the quality of the custom brass stamp matters just as much as the machine and stamping settings. One of the most common questions buyers ask is simple: what file format should I send for a custom brass die?
The short answer is this: AI, PDF, and other clear vector-based artwork files are usually the best options. A high-resolution JPG can also work for simple logos, and some 3D or technical projects may use STP files. The better the artwork file, the faster the design confirmation and the better the final brass stamp result.
The most commonly accepted file formats for leather logo brass dies are:
AIPDFJPGSTPEach format has a different use case.
AI files are usually the best option for custom brass stamp production.
Why they work well:
If your logo was created by a designer, ask for the original AI file whenever possible.
PDF files are also very useful, especially if they contain vector artwork.
Why they work well:
A vector PDF is usually much better than a screenshot exported into PDF format.
JPG files can work for simple logos, especially when the image is large and clear.
They are acceptable when:
But JPG files are not ideal for fine detail, small text, or precise logo geometry.
STP files are more specialized and are usually used for technical or 3D-related mold work.
They may be useful when:
For most standard leather logo brass stamps, AI or vector PDF is still the better choice.
If your logo includes very small text, line thickness and spacing become even more important in production. You can also read how to stamp small letters on leather without blurry edges.
No matter which file format you send, the artwork should be:
For best results, your file should also show:
This helps avoid delays during design confirmation.
Many delays happen because the artwork is usable for printing, but not ideal for engraving a brass die.
Common problems include:
If the original logo file is not available, a factory may still be able to redraw it, but that adds time and may slightly change the artwork.
For small leather goods such as:
the best file is usually a clean AI or vector PDF.
Small logos need:
This is especially important when the brass die will be used on PU leather or soft genuine leather, where too much detail can fill in during stamping.
To speed up custom brass stamp production, do not send only the logo file. It helps to send:
For example, a logo for a wallet corner and a logo for a bag center may need different die layout and mounting suggestions.
A custom brass stamp is engraved based on your artwork. If the artwork is unclear, the die may still be made, but the final result may show:
A better file leads to:
At Zhengfei, custom brass stamp projects usually follow this process:
For standard custom brass stamp projects, AI, PDF, JPG, and STP files can all be reviewed. If the artwork is not fully production-ready, the design team can help adjust the file before engraving.
A good file is only one part of the result. For leather logo stamping, it is also important to match the file with the right setup:
custom brass die for the logoFor example:
EC-27 is practical for many PU leather logo applications and finished leather products90XTS is a strong choice for repeat stamping and stable small-batch productionThe right machine and die combination helps turn good artwork into a clean final impression.
Once the die is ready, correct machine settings are the next step. For PU leather projects, start with this guide on the best temperature for foil stamping on PU leather.
If your current stamping result looks incomplete even with a good die file, the next thing to review is transfer performance. See why foil does not transfer on leather and how to fix it.
If you want to order a custom brass stamp for leather logos, the best file format is usually AI or vector PDF. A clear JPG can work for simple artwork, and STP may be used for more technical mold projects.
The key is not only the file extension, but the actual quality of the artwork. Clear lines, correct size, and complete project information make production faster and stamping results better.
Need help checking whether your logo file is suitable for a brass stamp?
ZHENGFEI provides custom brass dies, interchangeable brass letters, and manual hot stamping machine solutions for leather branding and foil stamping. You can send your logo, size, and product photo for file review and production advice.
AI is usually the best format because it preserves clean vector lines. Vector PDF is also a strong option.
Yes, but only if the image is clear and high resolution. For small logos and fine text, AI or vector PDF is better.
Yes, that is usually recommended. Outlined text helps prevent font issues and keeps the design stable during production review.
A screenshot may work for simple designs, but it is not ideal. It often needs redrawing before brass die production.
Send the stamp size, material, application method, and product photo if possible. This helps the factory recommend the right die structure and machine setup.
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