Computer Controlled Machining

Computer Controlled Machining

  • Group assignment:
    • Complete your lab's safety training
    • Test runout, alignment, speeds, feeds, and toolpaths for your machine
    • Document your work to the group work page and reflect on your individual page what you learned
  • Individual assignments:
    • Make (design+mill+assemble) something big

This week's assignment required designing, milling, and assembling a large object. Since I am in need of a piece of furniture at home, I decided to make one. But I think it was too big to do so I designed a table for my living room.

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For the group assignment, we characterized the ShopBot CNC router. We tested the runout (machine tolerance) and calibrated the speeds and feeds for the local plywood material.

Individual Assignment:

  • Machine: ShopBot PRSalpha 96-48-6
  • Tooling: 1/4" down-cut bit for traces and 1/4" up-cut for thru-holes.
  • Feeds & Speeds: Spindle 18000 RPM, Feed rate 3.0 ips, Plunge rate 1.5 ips.

I designed a multi-purpose table using V-carve Pro to generate the toolpaths. I included dog-bone fillets in the slots to allow the round bit to clear the corners, ensuring a perfect press-fit without manual chiseling.

3D design

I designed the mini storage drawer. Here is a glimpse of my work:

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Video

Reference

Process Video

DOCUMENTING MY WEEK - FAB LAB CINDY de Cindy Marilyn