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Sintering 3d-printed bronze

  • sintering
  • sinter
  • 3d printing
  • bronze

Note: this is step 2 of a print / sinter / polish process.

I've spent sort a lot of time figuring out how to print and polish metals. Just because it's neat. There was a LOT of trial and error, and very little actual material I could find reliably, so I hope this log helps any others (or future me) reproduce the results.

Read more: Sintering 3d-printed bronze

3D printing metal filaments

  • sintering
  • sinter
  • 3d printing
  • bronze

Note: this is step 1 of a print / sinter / polish process.

This is a quick overview for how to print metal filaments in a "normal" 3D printer: Colorfab (Brassfil, Bronzefil, Copperfil), Proto-Pasta (composite SS, Iron, and Copper), and Virtual Foundry (Filamet in bronze, copper, cluminum) sell filaments with at least 50% metal content. Other "metal" filament with less content can be printed like normal PLA (or whatever base plastic) and is therefore less challenging.

Read more: 3D printing metal filaments

Polishing metals (and metal-filled plastics)

  • 3d printing
  • bronze

Note: this is step 3 of a print / sinter / polish process.

Now that you've successfully printed with "metal" filament, and possibly sintered a solid metal part, you want to make it look nice. These steps are generally chronological, but you can always go out-of-order or do a step again. If you do plan to sinter, I highly recommend a pass of trimming & shaping before the sinter, then further cleanup after.

Read more: Polishing metals (and metal-filled plastics)

Polishing 3d-printed bronze

  • sintering
  • sinter
  • 3d printing
  • bronze

Note: this is an addendum to the 3rd step of a print / sinter / polish process.

Solid bronze can be finished and polished to a bright luster, not unlike jewelry. It's a very hard, beautiful metal with some cool properties. It cleans up similar to metal-filled plastics, but there are a few steps specific to solid metals.

tl;dr: pickle, brush, shape, tumble, maybe brush again, polish, buff, wax.

Read more: Polishing 3d-printed bronze

Math worksheets for homeschoolers

One of my boys is homeschooled, and even before he did well with some warm-up / practice worksheets at home. I made randomized worksheets in Google Sheets that would let us print out the same types of problems, but with different values. Because he could memorize them (at least the earlier, simpler ones).

  • Adding and Subtracting Integers
  • Integer Multiplication / Division
  • Long division (Integer)
  • Fractions I (integer + simple fraction)
  • Fractions II (addition, subtraction, multiplication, division)
  • Decimals (rounding, addition, subtraction, multiplication, division)
  • Scientific Notation & Metric conversion

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