The starting point have been the design of several frames with same external shape and with press-fit joints similar to that I designed furing the week of mechanical design.
I looked at the data sheet of the DC motor that I had in order to match the motor frame of my model with the holes of the motor.
I drew the holes of the DC motor in the 3D model
I drew the impeller with square holes to fix it to the hub of the motor and to fix the blades.
I drew the blades with a chamfer in the teeth to allow a better fixation.
For this part I followed the settings I described in the Exercise 03.
Just to refresh my memory: every line needs specific layer and color.
Clicking simply on print and then on Propreties I set for 4 mm of playwood the speed at 3,4 and power at 100%.
Finally I clicked on Set.. to place the view according to the position of the pieces on the file and according to the position of the wooden sheet in the laser machine.
I needed a new support for the DC motor because I had a mechanical interfernece between the screws that were fixing together the impeller and the screws that should fix the motor to the frame. So I had to fix the motor with some screws placed farer from the center point. To do this job I thought to design a support with OnShape and to make it with an additive processing like 3D printing.
This time I used a new 3D printing machine: the Delta 2040.
Here below I saved in the pictures the settings that worked fine for my object.
I drilled two holes, I put two M3 bolts and this was the result.