BDU-33 Practice Bomb Model Replica (Replacement Parts Only)

This listing is for replacements parts of our full size 3D printed replica of the BDU-33/MK-76 practice bomb weapons munition.

When ordering a completed BDU-33 model, the objects with threads (main body, tail body, and fins) must be pre-broke in/settled in order for the fins and lug to align properly. This can take 10-20 mins of manual labor. When ordering individual parts, we are not able to break the threads in for you. To break the threads in/get them settled, follow these steps:

  1. Tighten the new part against your existing part a little tighter than you normally would, but not so tight that you break the threads. Do this about 5-10 times. checking alignment as you go. If alignment is good, stop here.
    •         When breaking in the tail body threads to the main body threads, they can become seized/hard to disassemble. Grabbing it with rubber like material wrapped around it, or using 2 people can help break it free again. Do not use the lug as leverage when twisting the main body.
  2. After completing the above step, If the lug does not align with the fins, back the threads off about 1/2 to 1 full turn. Now while pulling the objects away from each other, twist the threads back and forth rigorously (imagine you are sanding/smoothing the surface of the threads against each other). Continue this for a 30-60 seconds, then assemble the parts fully to check alignment.
  3. Does the same as above, but instead of pulling the parts apart while twisting the threads, push them toward each other.
  4. If it still needs more alignment, start over back at the first step until threads are settled in a position that allows the lug to properly align with the tail fins.
  5. Once that lug and fins line up, they should remain aligned as long as you do not continue to over tighten any threads during assembly/disassembly.

Notes:

  • These parts are not suitable replacements for real BDU-33 parts.
  • The lug and firing pin plate are glued in place with CA glue/Super Glue. You can use any glue suitable for PLA plastics.
  • We currently are not going to be selling .stl files for any of our models that we offer.

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BDU-33 Practice Bomb Model Replica (Replacement Parts Only)

  • Brands Weaponz Online
  • Product Code: 3DModel-BDU33-Parts
  • Availability: In Stock
  • $0.00


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