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3D CAD drawing:
Motor focuser bracket


Contents:

  1. CAD for motor focuser bracket
  2. CAD bracket version 2
  3. Timing belt length calculation
  4. CAD bracket version 3.0, part 1
  5. CAD bracket version 3.0, part 2
  6. CAD bracket version 3.0, part 3
  7. CAD bracket version 3.0, part 4
  8. CAD bracket version 4.1, part 1
  9. To be continued

Note:
I take no responsibility or liability for what are written here, you use the information at your own risk!


6, CAD bracket version 3.0, part 3:

Info:

Plastic material isn't as strong as metal, but with some support along the sides it could be much better.


Reinforcement of bracket:

3D CAD: motor focuser bracket

Here I have started to draw a line that follow the main plane's outer edge. I tried first to copy it from that under laying 2D drawing, but couldn't find it possible. I have added a lot of connection points on the under laying block.


3D CAD: motor focuser bracket

I have it offset by 0.5 mm from the edge, copy the first line and offset it by 2.5 mm.


3D CAD: motor focuser bracket

Close Sketch and open Pad Design.


3D CAD: motor focuser bracket

Now I found that the motor's gearbox protrude outside the edge, I must limit the upper extend of the support.


3D CAD: motor focuser bracket

I could have make it wider and added a hole for the motor, but I think this will be strong enough.


Adding text info:

3D CAD: motor focuser bracket

I have also added some text with information about the bracket and where to find it (later as a free download STL file).


3D CAD: motor focuser bracket

A stop block was added to not let the controller move over the edge. I try to do the design to not have to add support in the slicer, it will waste with the printer time and use more plastic material.


3D CAD: motor focuser bracket

These last fine adjustment and rounding of corner took very long time to get correct. But now it's ready to print, just a 3 hours printing time. Print it with 0.2 mm layers, 30 % fill and 1.5 mm thick walls and add a brim around the object.

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