What's new
British Ordnance Collectors Network

This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

I Now Have the Power to Reband Large Projectiles

M8owner

Well-Known Member
I have been to Olympus and stolen fire. The power of the Ordnance Gods is mine.
 

Attachments

  • IMG_3554.jpg
    IMG_3554.jpg
    280.2 KB · Views: 171
  • IMG_3555.jpg
    IMG_3555.jpg
    276.7 KB · Views: 163
  • IMG_3556.jpg
    IMG_3556.jpg
    284.4 KB · Views: 168
  • IMG_3557.jpg
    IMG_3557.jpg
    280.9 KB · Views: 187
  • IMG_3558.jpg
    IMG_3558.jpg
    276 KB · Views: 166
  • partial reband.jpg
    partial reband.jpg
    201.7 KB · Views: 177
  • finished reband.jpg
    finished reband.jpg
    204.4 KB · Views: 192
This was my third set of tooling. I could have spent $4000 to buy a hydraulic crimper that could only handle a 2 inch outer diameter. Machines going up to 3-4 inches are $50,000. I tried a two point crimp first, but the problem is that the band keeps popping back up if you do not hold it down. I found out that you must hold it in place all around the ring. The fingers have to be adjustable to move in as you squish it and rotate the band. It is kept low cost by only having one active compression finger with the force provided by any simple shop press. Total cost was a day of my life and $20 in materials.
 
I made it large enough to do a Russian 85mm AP that is waiting for its turn. I started with a US 75mm M62 AP shown above. I plan on trying as small as 37mm with this same tool.
 
Here is the finished band after machining on the lathe. This is the first time I tried a pure copper band vs. brass. I will not do that again. It is hard to machine as it likes to tear rather than be cut. It took much longer than brass. You have to run at high speeds with lots of lubrication to machine copper. I can see why there are issues with copper fouling in barrels.
 

Attachments

  • IMG_3562.jpg
    IMG_3562.jpg
    272.7 KB · Views: 111
  • IMG_3561.jpg
    IMG_3561.jpg
    278.4 KB · Views: 119
Last edited:
That might be, but you have one hell of a result, nearly perfect! ik like it when technical people are involded with our hobby. Nice job there in Texas!
 
copper is machinable you just need a brand new cutting tip and take your time.i did a 17pounder projectile with no problem.
 
Blown away, AGAIN, by your extreme fabrication skills! WOW! Just incredible!


Jason
 
Great job, well done. Jowever , I'd stick to red copper driving bands. You just need a very sharp chissel on the lathe.
Regards, DJH
 
It handles brass driving bands on a Russian 85mm AP.
 

Attachments

  • IMG_3567.JPG
    IMG_3567.JPG
    252.9 KB · Views: 59
  • IMG_3568.JPG
    IMG_3568.JPG
    282.6 KB · Views: 55
  • IMG_3569.JPG
    IMG_3569.JPG
    124.5 KB · Views: 55
  • IMG_3570.JPG
    IMG_3570.JPG
    146.9 KB · Views: 52
  • IMG_3571.JPG
    IMG_3571.JPG
    260.5 KB · Views: 60
Nylon should be easy. You can put on a ring with a split to fill in the groove. Then you can put a loose ring over the top. Spin it on a lathe until it gets hot and friction welds together. Then machine to finished dimensions.
 
Top