About Me
My Project
FabAcademy

Sergio Subrizi

About Me

The Assignments
  1. Principles and Practices, Project Management
  2. Computer-Aided Design
  3. Computer-Controlled Cutting
  4. Electronics Production
  5. 3D Scanning and Printing
  6. Electronics Design
  7. Embedded Programming
  8. Computer-Controlled Machining
  9. Molding and Casting
  10. Input Devices
  11. Output Devices
  12. Composites
  13. Networking and Communications
  14. Mechanical Design, Machine Design
  15. Interface and Application Programming
  16. Applications and Implications
  17. Invention, Intellectual Property, and Income
  18. Project Development
  19. Project Presentation

Computer-Controlled Cutting

Go parametric !!! I started this week assignement with a tough thing to design: a heart-box with press-fit joint and kerf bending. My software learning curve is very slow :-( so I started with a program I know well:Vectric Aspire and I get the job done! Then I thought that this kind of work need to be controlled parametrically to easy change dimensions without doing a totally new design. I think Inkscape with the clone tool could do it, my plans is to learn how to do similar things also with Antimony and Solidworks, but as I said .... my learnig curve is slow.
Although I'm still in "beta testing" phase, the cloning procedure worked well. I'am able to do fine adjustment without starting a new design, the result is quite good but better settings are needed. I choosed to have a different size for male/female joint, this is a nice feature, but much more complicated to tune with Inkscape (at least with my knowledge level). The kerf bending is nice and create no problems it's easy to design. The press-fit joint precision of the curved part is a bit different from the straight parts of the heart, I have to think who is responsible of the problem and how to solve it.

A next step is to try to separate the curved part to the curved one
Heart Box Inkscape

I did some test for the Rotala Logo, in the first picture three study were made. The first one was the most voted by friends. To realize that logo at least two colors were needed, as we don't have a printer/cutter I decided to do two sticker, one for the graphic background and the other for the name. The use of the Summa Cutter it's very easy, the only attention needed is to properly load the material paying attention to have at least two contact/pressure wheels on the material. The cut force is just a question of a few test, with 185g I obtained a perfect result, cutting the adesive but not le layer base. I think this is the easiest of the machine we use in the FabLab, and it's not one of the newest model available.

The Rotala Logo