Bulkhead fitting

Note: This model is customizable (parametric), this means you can change its characteristics to fit your needs.

This bulkhead fitting serves to safely and tightly route something (liquid, gas, or cable) through a barrier while maintaining the barrier’s integrity, or just simply to make the hole look more polished. It comes with a lid and a TPU sealing ring if you need to keep liquid before draining it… perhaps a diy beer cooler? 😉

Note: The customizable model does not come with a profile. If you need print settings guidance, have a look at the 18mm PETG+TPU print profile to get an idea.

I used the fitting to drain water from an outside planter. I lined the wood with plastic for extended lifespan and used the fitting to let water get out without soaking the wood inside the drilled hole. I used a small amount of sealant between the fitting and the plastic and the bolt nut tightens the seal.

The preset print profiles contain 4 sizes, all 40mm long bolts:

• Large
  • 28mm drill hole diameter, 7-35mm depth
  • 18mm inner hole

  • 38mm bolt top

     

• Medium
  • 24mm drill hole diameter, 7-35mm depth
  • 12mm inner hole

  • 34mm bolt top

     

• Small
  • 20mm drill hole diameter, 7-35mm depth
  • 8mm inner hole

  • 30mm bolt top

     

• Smaller outside, wider inside
  • 18mm drill hole diameter, 7-35mm depth
  • 13mm inner hole
  • 32mm bolt top
  • This profile also includes a screw on cap and a TPU sealing ring.