Spring 2016: 3DoT David Printing Time

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BY: Andrew Saprid ( Manufacturing Engineer)

Introduction:

Calculations were done by adding the quantity to the table and adding the total amount of printing time for each part. The calculations for all the parts are then added and highlighted on each of the three tables for the total print time of all the parts.

Related requirements:

  • As part of our level 2 requirements, 3D printing time shall not exceed the 6 hour limit. Each part will not exceed the 2 hour limit of printing. Three tables are shown in the figure below to compare scenarios, if all the parts are to be 3D printed.

All parts printed

If the parts are all printed, it takes 7.78 hours, which exceeds the 6 hour limit of printing.

12 legs to be printed takes 132 minutes to print. Each leg to print takes 11 minutes.

4 connectors takes 8 minutes. Each connector to print takes 2 minutes.

6 joints to be printed takes 6 minutes. Each joint to print is 2 minutes.

6 planks to be printed takes 8 minutes

Each part did not exceed the 2 hour limit print time.

exceedlimitBottom plate and Top plate excluded

By excluding the top and bottom plates to be laser cutted, it takes about 4.49 hours, which goes below the 6 hour limit of printing.
hr4.49Excluding the PCB box and cover

By excluding the PCB box and PCB box cover, it takes about 5.5 hours, which also goes below the 6 hour limit of printing. The PCB Box and the cover makes the PCB invisible to the eye, which does not affect the level 1 requirements, and saves printing time.

hr5.5Conclusion
The best results are excluding the top and bottom plate to be laser cutted, or excluding the PCB box and PCB box cover. The best scenario would be to exclude the PCB box a
nd cover. The rest of the parts will be 3D printed, which takes about 5.5 hours.

Sources:

Thanks to Min, the manufacturing engineer from the Velociraptor Team for printing all the parts, the results are in for the 3D printing time.