SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

Hi there. I'm not sure how it works in the rest of the country. But around her in So. Cal. we use a water jet to bore under sidewalks.
No pounding involved. I am an inventor myself and have a few tools I use on the job. I had a problem with the plastic pipe bending and coming out wherever it wanted to on the other side. So I made one with a 2 foot section of galvanized steel on the front with a brass nozzle. On the back a galvanized tee with a 5 inch nipple and a cap for a handle. And of course the hose fitting on the end. The rest of it is plastic so you can make it as long as you want by gluing on a new piece of pipe. This thing is deadly accurate. I bored 22 feet under a patio and actually hit the side of the manifold I was replacing. I'm not claiming this as an invention. But, I like always say, you can never have too many tools. I wouldn't mind having a couple boneheads on my truck.
Good job!

Not impressed...

...given that all it appears to be something along the lines of a nose cone.

Conceptually, I did the same thing on my own. I got a 3/4" piece of black pipe the width of the sidewalk, placed a 3/4" to 1/2" reducer fitting on the front of it, and a 1/2" nipple in the other end of the reducer. The result was a somewhat pointy device that made a 1" bore with only a 3/4" pipe.

spair2,

If the Bonehead routinely works with #4 rebar, perhaps you should include that on the web page. It would seem that using rebar would lower the total cost of the Bonehead to the end user. For one, I believe rebar is cheaper than copper grounding rods (especailly with the run-up in copper prices in recent years), and you can frequently purchase rebar in short lengths when you're in those tight fits. Not only that, when working in limited areas, rebar can also bend (i.e. I bored a hole under my 11' driveway 18" under the driveway starting with a pilot hole drilled with 20' rebar using only a 5' long trench).