Joining | Dog Bone

SUMMARY:

  • A Dog Bone Joint is a friction fit joint used to join two pieces of sheet material.  Typically, dog-bone joints are made using a CNC machine.  They are called dog-bone joints because the corners are rounded out and resemble a cartoon-like bone.  The reason for the rounded out corners is to remove the extra material that is left by a round bit at the corners.
  • When designing a dog-bone joint, it is important to test tolerances with scrap material.  The scrap material should be the same type of material, preferably the same exact material that will be used for the final product.  This is because different materials and even similar materials from different batches can produce different results.  The tolerance needed to create a friction-fit joint is delicate.  You may be able to cut to the exact size of the needed joint, but you may need to add material or subtract extra material to make the joint a tight fit.

MATERIALS:

  • Your choice of cutting material Wood, MDF, etc
  • Desired Rhino/PartWorks File

TOOLS:

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  • CNC Machine
  • Screw Driver
  • Screws

SAFETY EQUIPMENT:

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  • Earplugs
  • Safety Glasses
  • Dust Mask

 

CLEAN UP:

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  • Power blast dust from machine
  • Use dustpan and mop to clean up floor

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