Lionel made the decorative horns on top of their earlier F Units & Alco diesels with metal tabs that are just about impossible to bend. I got the old one out using needle nose pliers, but trying to bend the tabs into place on the replacement (NOS) is very difficult—trying not to crack the body. Does anyone have any tips on this? Thanks.
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which ones ? show a picture.
I have 3D printed many of them
Lionel had a special set of tools for their press to install the horns. The tabs are very stiff. They must be splayed with a conical tool and the support must rest on the bracket (note the hole in the portion supporting the horn). Made my own on my metal lathe.
@AlanRail posted:which ones ? show a picture.
I have 3D printed many of them
I have some gold silk fiber, it printed some brass looking fixtures great, I should try the horns. 
The horns designs are made from simple revolves.
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