aluminum horn repair

[Northmount]

This may or may not work for you.  Centre punch the head of the nails, then drill until you go just through the head.  Pull the leather parts off, then cut the nails off flush with the tree or what ever layer you are going down to. 

I'm not a saddler, but that would be my approach.  Works for me on other leather projects and on woodwork repairs and projects.

[JanetNorris]

Thanks Northmount, I will try that when i get some time free again.  And i will post any progress made.

[tsunkasapa]

A Dremel with a fine grind stone may be an option.

[Goldshot Ron]

On ringshank nails I start with a nail/tack puller just enough lift the nail to expose the head, then with a set of nail pliers pry the nails out slowly using leverage.  Place a scrap piece of leather under the head of the pliers and rock the nail out.  Worst case scenario you clip off the head.  Then the leather lifts up and out of the way.  Now you can use the pliers to grab more of the nail and rock it out.  This way you don't rip the leather because you are finessing the nail out.  I do not recommend you a Dremel tool because it will heat up the nail and burn the leather.  Also, more chances of scaring the leather with the cutting head (been there, done that).  Like Oltoot said, don't replace the nails with new ones, "you may have to repair it" some day.