Can I Make a Carbide Tipped Hammer? 

When I started making carbide tipped hammers, I had a similar experience. Holding the hammer in position and making sure it stayed centered is always a challenge. The ball end probably needs to get hit longer with the torch. It looks like just the surface got soft. The heat takes awhile to go down as far as you are drilling. If you are going to braze the ball in place, you really need an oxygen and acetylene torch. A MAPP gas torch did not get me to the heat I needed for a long time. All that heat also burnt the handle really badly and had to get a new handle for in the eye of the hammer. If you are silver soldering, it doesn’t need to get as hot for it to hold. Hope that helps and I felt your pain! I know it is more of the challenge, but if you want to grab one, I make them in 4 oz and 8 oz hammer weights. It doesn’t take much force to get the effect on a blade. I have a video walking through the straightening process I use on a knife on my channel.

i bought a brass hammer and put the bearing in it.

Finally

Get a torch and anneal the ball before trying to drill. Doesn’t need to be hardened because the carbide is going to be set into the face

Why carbide? Seems like that ball peen is already harder than HSS.

7 minutes of the wrong tool for the job/wrong rpm for the job. Order a simple carbide end mill and be done with it! KnifeMaker/Retired after over 47+ Years in the Craft