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11. Open Source Hardware - From Fibers to Fabric

Research & Ideation

Continuing with last week's theme where I tried to bend wood, I wanted to do the same but more efficiently so next in line was to make a steam box. The idea behind the steam box is to expose wood to heat and moisture in the form of steam which penetrates the fibres allowing them to be reshaped without breaking.

References & Inspiration

I took some inspiration from some youtube videos. I then combined the 2 to create a steam box with what I had locally.

Video by @WoodshopJunkies

Video by @Bourbonmoth

I then researched material replacements for the palstics and for the steam generator.

We then came up with a sketch of the design.

Steambox Sketch

Now on to the hard work of making it...

Tools

  • Fusion 360 for design work and toolpath/g-code generation
  • CNC Machine (In my case a Forest Scientific router)
  • CNC Control software (To send the toolpath/gcode to the CNC router)
  • 3/4" Plywood

BoM

Materials

Qty Description Price Link Notes
2 MTR Horse pipe 20 $ locally sourced
1 bondex 30.00 $
4 Tank connector 30.00 $
clips 15.00 $
wood inserts 50. 00 $
500g cotton wool 50.00 $
1 Silicone 25.00 $
10 Screws 50 $
8 Nails 5 $

Process

Building the Boiler/Steam Generator

We used a generic immersion heating coil to heat the water and fabricated a cone to guide the steam from the container. A little bit of welding was needed.

Welding the cone

welding the steam box

The final steam box with no insulation was assembled

Assembled Box with no insulation

We then had to design the insulation box which was all done in Fusion 360 Insulation box 1st Design

Insulation box final Design

I then generated the toolpaths using Fusion CAM

We then did the final assembly, putting the stembox into it's insulation box.

Insert into box

Insert into box

3D Model of mold/jig

We then added the insulation

Added insulation

We then had to fabricat the door, so attached the steambox door plate to the wood cover.

Attach to door

We then attached some springs to keep the door closed

3D Model of mold/jig

3D Model of mold/jig

We the tested the door spring mechanism 3D Model of mold/jig 3D Model of mold/jig 3D Model of mold/jig 3D Model of mold/jig

We then made an inclined stand for the box. We started with the side pieces. 3D Model of mold/jig

Then created the holders 3D Model of mold/jig 3D Model of mold/jig 3D Model of mold/jig

Then attached them to the stand, yes they are under there... 3D Model of mold/jig 3D Model of mold/jig

The stands looked like this before installation 3D Model of mold/jig

and after installation 3D Model of mold/jig

and we obviously tested...

Final full setup 3D Model of mold/jig 3D Model of mold/jig

Once that was done, the steam box was complete. Time for some more testing. and of course we did this by putting some bamboo in it.

and... RESULT!

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Fabrication files


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