Entropy Reduction

Personal log of yet another digital native.

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Project maintained by andre-abadi Hosted on GitHub Pages — Theme by mattgraham

Purpose

• Fix the bridge from a Brio Style toy train set, that had been partially squashed
• Make something that would keep it strong

References

• Self made design:
  • Thingiverse: Toy Bridge Splint Fix
  • Github: Toy Bridge Fix

Actions

• Calipers to measure up the dimensions
• Simple design prototyped on TinkerCAD
• Printed in PolyMaker PolyTerra PLA Cotton White
• Functionally ended up being 100% infill
• Slid into place and filled with much more polyurethane than typical, to fill the large spaces
• Waited 12hrs
• Used a sharp knife to cut off protruding parts of expanded foam

Pictures

Observations

• Was probably too thing and flexible (walls only 2mm thick)
• A thicker design would have put more pressure on the glue to make it stronger
• It ended up being strong enough to do the job
• 3mm wall thickness would have probably been the perfect balance between strength and material use
• Still worked really well with generous amounts of polyurethane to make a strong part
• Polyurethane filling gaps in PLA can make very strong structures