3D Files

What are the file formats supported by Proto21 for 3D printing services?

We prefer receiving STL and OBJ formats but we welcome almost all common file formats. Following is the list of softwares that we can work with:

  • SolidWorks (.SLDPRT, .SLDASM)
  • 3Ds Max (3DS, ASE)
  • Fusion 360
  • Inventor (IAM / .IPT)
  • AutoCAD (DXF)
  • Maya
  • Blender (.BLEND)
  • Google Sketchup(.SKP)
  • Rhinoceros (3DM)
  • STEP (ISO 10303)

What is the maximum file size of a 3D file upload?

Our maximum upload size is 50MB. We highly recommend to keep your 3D files under this limit, otherwise display of such a large file results in a slower interface and longer delays in repairs etc.

Who owns the intellectual property rights of my design once I upload it?

Your upload’s intellectual property remains yours, now and always. Your files are deleted from our website’s secure database after 15 calendar days.

Why do some designs require fixing before they can be made?

Every 3D File is not 3D Printable. We have written brief guidelines to fix your files in order to make them printable. If you want our designers to do these fixes for you, we will be happy to do it.

What formats are accepted in the zip file for the textures?

The accepted formats are as follows: jpg, gif, png, bmp, tiff, xpm, tga, ico, wmf, pcx, xbm

My file is in .obj format: how can I make colours and textures appear?

For this particular format, you must attach, along with the .obj model, the indexation file for colours and textures (..mtl), the texture files (image formats .jpg, .png, .gif or others) and include them together in a zip archive.

It’s this .zip that you have to upload to the website.

So .zip = .obj + .mtl + .jpg (or other picture formats).

3D Print

What is the maximum size of a 3D print?

Size of 3D printing a model depends upon the technology/printer used. Following are printing envelope capacity of each technology:

  • Binder Jetting: 38cm x 25cm x 20cm
  • Fused Deposition Modeling: 1m x 1m x 1m
  • Selective Laser Sintering: 60cm x 32cm x 30cm
  • Stereolithography: 14.5cm × 14x5cm × 17.5 mm

We can also produce larger models by dissecting your 3D designs into parts, printing them
separately and then assembling them.

What is the level of detail of objects produced?

The level of detail of 3D Printing objects depend upon selected size of the object, technology and material used. The resolution of the print depends upon the layer height of the print. Which is different in different technologies as listed below:

  • SLA: 35 microns – 0.03mm
  • FDM: 60 microns – 0.06mm
  • SLS: 60 microns – 0.06mm
  • Binder Jetting: 100 microns – 0.1mm

How does Proto21 process reprints?

Only upon establishing and analyzing from our team, we shall be able to reprint if there is a manufacturing defect established.

Are there any finishes I can apply myself on my 3D prints?

With a little preparation, you can paint or polish 3D printed parts yourself.

Do you print in ABS or PLA plastic material?

Yes, we print in ABS and PLA plastics beside TPU.

I have a 3D printer(s) – can I offer it for my services to Proto21?

Yes, sometimes our production facilities are too busy and we look for vendors and services that can cater to our customers’ requirements. Please register your services with us in order to have a business relationship. Contact at

What materials do you offer?

We offer the following materials:

  • PLA
  • ABS
  • TPU
  • PA12
  • Sandstone Full Color
  • Castable Resin
  • Grey Resin


What forms of payment do you accept?

  • Cheques
  • Cash
  • Bank Transfer

How are prices calculated?

The price depends on several criteria, including (but not limited to):

  • The physical quantity of material used for the end objects
  • The total quantity of material used during the manufacturing process (supports, offcuts)
  • Total machine time for the manufacturing process
  • Time spent in post-processing, quality control and packaging
  • The material and finish chosen

Do I need to pay VAT?

As per the UAE law, all our services are liable to 5% VAT.

What is the delivery time once I have placed my order?

Depending upon the technology, quantity, size and finish.

Do you deliver to PO box addresses?

No, we do not deliver. We prefer every single time our customer to pick up from our office to make sure the quality, finish and all other manufacturing design requirements are achieved.

I have an idea – can you design it for me?

We enjoy turning concept models into reality. Our CAD Engineers can transform your concepts from sketches to 3D Models which can then be 3D Printed. Please contact us at info@www.proto21.ae to further discuss your ideas.

Working hours

We’re open from 8 am to 5 pm, but our Whatsapp number is available 24/7, who needs sleep!

What do you need to get a quote?

Following are the details we require. They are listed top to bottom as per priority

  • 3D Files, Drawings, images or the concept
  • Size of the model
  • Application of the model (Material & Technology required)
  • Lead Time
  • Quantity of the items
  • Color and finishes
  • Installation and Delivery (if required)

IP protection

To ensure that your files are protected during the manufacturing process, every Manufacturing
Partner agreed to and signed an NDA. If you need additional, please contact gaby@www.proto21.ae