Anyone ever bore a .355 to .370 using a hand drill?

Hoss7504

I have a few .355 iron heads and some time to experiment so I wanted to see if this can even be done with a hand held hammer drill?

If so, anyone have any tips?

Rickochet

Hoss7504 I have a few .355 iron heads and some time to experiment so I wanted to see if this can even be done with a hand held hammer drill?

You don't need to do this with a hammer drill. Slow drilling with the appropriate reaming bit will work. I have seen lots of posts of people doing this with hand drills. You are taking a very small amount of material out of the head for about the bottom 5/8" of the bore. At least clamp the head in a vise and use a proper reaming bit with cutting oil which is available at any hardware store. Clean the bore out with carburetor cleaner when finished.

Mattyv

Hoss7504
I did it once in my early days of club building. Just 1 club, a Callaway borethrough iron. In hindsight I would not do it again. I would now just go with a tapered shaft. It was not fun but I got the job done. I felt kind of wrong on the inside after doing it.

sdandrea1

I've done it with a 3/8" carbide bit. I was successful on a set of PING ZING heads. I held the heads in a vise clamped on the face with LOTS of cloth padding and I used an electric hand drill and some motor oil to keep the bit cool. The bit would grab and stick quite often but I eventually got them bored. I installed some nice graphite shafts and they are still in play.

sdandrea1

The reamer bit that Golfworks sells works very well. A long handle makes the job easier.

Weirfan

Not a difficult task...yes a drill press is preferred but I've done it by hand on a few sets

The amount that is needed to be removed is minimal.
Just make sure the head is secured in a vice and you do your best to keep the drill straight although the hosel being .370 at the top will serve as a guide.

a variable speed drill is a must and go slowly with cutting oil

Rickochet

Here is a cheap DIY reaming vice clamp. I use two pieces of scrap wood and cut a small "v" groove in them with a band saw. I stick the hosel up through the hole in the drill press platform and clamp the pieces of wood around them. The clamp floats on the platform and will self align to the reaming bit. Go slow with some oil and it is a piece of cake.

Typhoon

Damn u guys got me thinking again about those .370’s I have...

Bastards!...all of youse.

sdandrea1

Typhoon Bastards!...all of youse.

you're welcome! 😈