• Kudo3D Titan 1 SLA 3D printer PSP (Passive Self-Peeling) Technology

We have printed many 3D models during the development of our 3D printer Titan1. Preparing a 3D image file before printing is not as straightforward as preparing a 2D image file. Here we are going to share our experiences for preparing a 3D printable model. If you design your own 3D models, you may skip step 1.

1. Locate 3D models online

There are many websites providing a variety of 3D files you can download for free. If the file extension is not ‘stl’, you would need a 3D software to convert the model to stl format. “Thingiverse” is our most favorite site, because most of the files contributed are in stl format for free. We look for 3D models with higher resolutions to avoid limitations posed by the image itself. We use 3D Eiffel Tower as our main testing model for tuning printing parameters of our machine and our PSP (Passive Self-Peeling) mechanism. We have printed more than 80 of them with different sizes. The tallest one is about 9.4 inches, whereas the smallest one is 3.5 inches tall with pillars as tiny as a strand of hair.

2. Check and fix files

All downloaded 3D files need to be checked before slicing and printing. A lot of them may even require repairs. Check your STL files to ensure:

  • all objects maintain “outside” orientation.
  • the surface of all objects is closed and there are no overlapped faces.

We use “Netfabb basic” to repair models. If the number of shells is too high or “Netfabb basic” fails to fix the model, you would need to upload the stl file to “Netfabb cloud” for further repair.
Sometimes, multiple shells could get you a problematic hollowed model in the following step.

3. Hollow 3D models if necessary
Most of the models require hollowing to save printing materials. In addition, hollowing minimizes light exposure area and greatly reduces layer separation force. The printing time is thus shortened and the printing quality is enhanced.

We use “Meshlab” to hollow our 3D models by building a smaller offset model with inverted surface.
(To Be Continued….)



  1. Tyler Panka November 17, 2016 at 1:58 am - Reply

    So I just have a question. The Titan comes with no software to program the machine…The machine itself uses patented tech self peeling which ultimately states that you are using dlp and sla tech together…Then why is there no custom software to run and program (slice) models?
    Just curious if there is something I am missing, there is a good job being done wiping this information from the public?
    I have no way to load a model to run it? the Kudo3d titan software runs the machine but cant input a model?
    Or I have been know to be very blind and I am just not seeing (getting it_)
    Thank you.

    • Kudo3D Tech Support December 10, 2016 at 7:14 am - Reply

      The software is a tool chain including support generation, slicing and controlling. You would need to slice the model and then input the slices to the controlling software. The controlling software does not take the stl file.
      If you need more technical information, please send an email to contact@kudo3d.com. You can also download software manual under http://www.kudo3d.com/downloads/ Thank you.

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3D 이미지 파일 준비하는 것이 2D 이미지 파일보다 좀 더 복잡합니다. 이 블로그에서 저희가 3D 모델 준비하는 과정과 경험을 공유하겠습니다. 직접 3D모델을 디자인하시면 1단계를 건너 뛰어도 됩니다.

1. 3D 모델 찾기

무료로 3D 파일을 다운로드할 수 있는 웹 사이트가 많습니다. (만약 파일이 “STL” 형식이 아니면 “STL” 로 모델을 바꾸는 3D 소프트웨어를 사용해야 합니다.) 저희는 “Thingiverse” 라는 무료 STL 제공 사이트를 제일 좋아합니다. 이미지를 찾을 때는 높은 해상도인 3D 모델을 찾는게 가장 좋습니다. 저희는 기계의 매개 변수와 PSP (수동 자가 필링) 방식을 시험하려 다른 크기에 에펠탑 모델을 80개 넘게 출력해봤습니다. 제일 크게 출력된 탑의 길이가 24.13cm, 제일 작게 출력된 탑의 길이가 8.89cm 입니다.

2. 파일 수정

Slice와 출력 하기 전에 다운로드한 3D 파일을 수정하고 수리 해야됩니다.

STL 파일이:

  • 오브젝트가 “외부” 방향을 유지합니다
  • 모든 오브젝트 면은 닫힌 상태이고 겹치는 면이 없도록 합니다

저희는 모델 수리에 “Netfabb basic” 을 사용합니다. 만약 shell 수가 너무 높거나 “Netfabb basic”이 모델 수리에 실패하면 STL 파일을 “Netfabb cloud” 로 업로드해 수리해야 할 수도 있습니다. Shell이 여러게 있으면 다음 단계에서 문제 생깁니다.

3. (필요하면) 3D 모델 속 비워내기
레진 재료를 아끼기 위해 모델 속을 비우는 게 좋습니다. 모델 속을 비우면 노광 영역을 최소화시켜서 층간 분리력을 크게 줄어지고 출력시간 단축시키고 출력물 품질을 향상할 수가 있습니다.

저희는 “Meshlab” 사용해 모델을 비웁니다.

(다음에 계속…)


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