Tag Archives: cutting a tenon with a PIMO tenon turning tool

Pulling a Broken Tenon

7 Replies

Over the years I have had my share of broken tenons to remove. Some of them came from carelessness on my part but others I purchased that way. I took pictures of the process I use on two different pipes recently. The first was a little Barling with a broken tenon and a chewed stem. I ended up restemming this one. The second one was a Peterson 999 with a broken tenon that I hope to reuse the stem by drilling/tapping and inserting a new tenon to refit it.

Image

Image

Insert a screw part way into the airway on the broken tenon in the shank of the pipe. I use a dry wall or gyprock screw. I turn the screw in by hand. I do not want to expand the tenon at all I just want the screw to have a little bite to it so that I can use it to pull the tenon out by hand or with a pair of needle nose pliers. In this case in both pipes I was not able to pull out the tenon easily. Many times I am able to pull it out in a matter of seconds using this method. But both of these were exceptionally tight and immovable. I put them both in the freezer for an hour as I know that vulcanite and briar contract at different rates with a change in temperature. After an hour I removed the Barling from the freezer and was able to pull the broken tenon out very easily. I then unscrew the broken piece and lay it aside to use for a match on the new tenon I will cut as a replacement. It helps me to eyeball the fit. I also measure the mortise and set the tenon turner as closely as possible to the measurements. I then take the broken piece and slide it on the tenon turner to check the fit.

The tenon on the Peterson however, still did not budge after an hour in the freezer. I left it in for another half hour. Still it did not budge. I then dripped Isopropyl alcohol into the exposed mortise and hoped that it would work as a solvent to break the tenon free. I repeated this several times and left the pipe sitting with alcohol in it over night. The next morning the tenon still did not move.

ImageImage

I decided to not fiddle around with trying to pull the tenon. I used my small drill bit and began to drill out the tenon. I never start with the exact size of the tenon but rather work with the size of the airway and work my way up. I have found that in the process of working through the bits the tenon inevitably breaks loose or crumbles to pieces. In this case, by the time I got to the third drill bit, when I reversed it the tenon came out with the bit. You will notice that I also flattened the broken portion of the tenon on the stem so that the surface was flat and smooth. I wanted it to be ready for when I would drill it out or tap to receive the new tenon that I have ordered.

ImageImage

As I close this essay I want to just mention a couple of reminders:

  1. Do not turn the screw into the airway to deeply as it does expand the airway and can actually crack the shank on the pipe. BE CAREFUL and go slowly.
  2. Do not use a tool to turn the screw into the airway – do it by hand so you can feel the progress and the bite before damage is done.
  3. If the tenon is stuck and immoveable in the first try put the pipe in the freezer for an hour or more to expand and contract the tenon and mortise. This usually works to break it free.
  4. Should you have to drill it out – use a bit a little larger than the airway to begin the process and work your way up to larger bits. Do not use a drill bit that is the size of the mortise lest you damage the mortise.
  5. Use a T handle hand drill not a power drill to do this as you can easily drill right through the bowl and ruin the pipe.

A Barling’s Frustration

4 Replies

I had this old bowl in my box that just looked like a Barlings. I took it out and studied under bright light and a loop. It had the arched Barlings over Make. The other side was stamped EL and Made in England (I believe). It had a serious crack in the shank so I superglued it and banded it. This little pipe became the definition of frustration for me. It was a beautiful and I was incredibly hopeful when I cleaned it up and prepared it for the new stem I had cut for it. The grain was very nice and to find that it was an older Pre-transition Barling’s pipe was exciting. The bowl cleaned up very well. The shank and new band looked great. All that remained was to finish working over the stem for it.

About that time my wife came down to the basement where I was working on it and we decided to go for our Saturday morning walk about. We had planned to take the bus down to an area we like to visit and check out the antique shops. This is something that we both enjoy so I put the little Barling’s my pocket and brought along some sand paper to work on it while sitting and waiting for the bus. We had a good morning, went to the Vancouver Flea Market and even found a couple of older Peterson pipes that I picked up. We decided to have some lunch before going home so we walked over to a nearby Korean BBQ and ordered a nice lunch.

While we were waiting for our lunch I guess the pipe fell out of my pocket. I did not notice until the waiter stepped on something and I heard a crack. Well the long and short of it is when we sat down to lunch it had fallen out of my pocket and when the waiter stepped on it the shank cracked off just ahead of the band. I had a sick feeling as I picked up the pieces of the broken old timer. My visions of a nice older Barling’s Pot shape were pretty much crunched. I put the pieces on the table and looked them over as we continue to wait for the meal and I grumbled about my stupidity in not zipping the coat pocket and also about bringing it with me in the first place.

Once we had finished eating and headed home I had calmed down enough to think about what I would do with the pipe. I took the pieces to the basement work table and turned on a bright overhead light so that I could examine the damages. As I looked at the broken shank I could see that the wood was darkened, almost burned around the crack. It was almost as if the heat in the shank had found a flaw in the briar and followed it outward to the surface. It had not gotten all the way to the surface but was just under the outer layer of the finish. So it appeared that the crack was worse than I had imagined.

That helped me to get over being incredibly frustrated and disappointed in the broken shank. So I spent some time looking it over and decided I could work with it. I decided to turn it into a nose warmer. The saddle stem I had made was too small in diameter to fit so I had to cut another stem. I cut off the ragged edges of the break and used a piece of sandpaper on a solid board to face the shank again. I also drilled out the shank and opened it up enough to accept the new tenon. The tenon is a bit shorter than normal 5/8″ to allow a little difference between the opening in the bowl wall and the mortise. I re-banded the shank for a second time to strengthen the shank after the previous break. I fit the stem to the pipe and sanded and polished it to a shine. Then I buffed and waxed the “new” little pipe. I made it such that I can one day put a church warden stem on the bowl should I desire to do so. For now though it is a nose warmer with a short taper stem. Total length is 4 3/4 inches.

Here are some pictures of the finished pipe. I had pictures of the pipe before and after the break but somehow they were erased so this is all I have left to show. I hope you can imagine what it looked like with the new saddle stem before it broke. But if not, you can see the new version. I am also ordering a churchwarden stem for it so I can fit one of those to it as well. Should look great that way as well.

ImageImageImage