Evolution of a Blog

This blog has evolved as I have as a maker. It starts at the beginning of my journey where I began to re-tread my tires in the useful lore of micro electronics and the open-source software that can drive them. While building solutions around micro-electronics are still an occasional topic my more recent focus has been on the 3D Printing side of making.

Saturday, July 11, 2015

3D Hubs

3D Hubs is a cloud based service that allows people with a 3D Printer to make that printer available to the wider community.   People without a 3D Printer, or even someone who has one but has a capacity issue, can find a local printer to which their models can be sent.

I have made my printers available to this service and while business is not brisk I have gotten two jobs that I have learned from having completed.

Below is a chart that illustrates the cost versus time to print pricing model that I have on 3D Hubs.  The model is based on the time and plastic that it takes to print a "Marvin".


3D Hubs Resolution Layer Height Speed (mm/m) Startup Cost Cost per cm^3 Cost Time to Print
Ultimaker 2 Low 0.25 2500 7 0.5 7.99 24

Medium 0.15 2200 8 0.7 9.39 40

High 0.1 2000 10 0.85 11.79 60

Duplicator 4S Low 0.25 2500 5 0.4 5.89 32

Medium 0.2 2200 6 0.5 7.09 40

Medium 0.15 2000 7 0.6 8.29 54

There are two factors at work in the above model.   Resolution of the print is governed by the layer height.   The smaller the layer the higher the resolution, and of course, the longer it takes to print.  The speed that the printer moves while extruding plastic does not impact resolution, however, it has an impact on print quality though this can vary from print to print.  Obviously speed has an impact on the time to complete the print!

In either case, the longer a printer is tied up the more one needs to charge!

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