Daily Archives: February 8, 2015

Cleaning up a Dr. Grabow Silver Duke Bulldog

Blog by Steve Laug

This old Dr. Grabow Silver Duke Bulldog is a bit of a variation on a restoration for me. Someone earlier had replaced the Adjustomatic stem with a push stem. Whoever made the stem did an amazing job cutting it to fit perfectly with the angles of the shank. I say it is amazing because on these old pipes none of the angles are the same and matching all the points of the diamond shank is a lot of tedious hard work (at least for me and I have done a few of them). Add to that the stem was converted to a push stem instead of the normal threaded stem. It is a high quality vulcanite also as it did not have any oxidation.

All I would have to do was sand out the blade or file marks on the stem and the metal mortise cap. The finish was very shiny and had some bubbles on the rim along with a tar build up. It was like a thick varnish. I always remove these top coats and wax and oil the bowl to make the grain stand out. The briar was pretty clean with only two recognizable fills that I could see, though well blended into the stain coat on the pipe. The bowl had a thin uneven coat of cake that would need to be reamed.

The pipe was stamped Silver Duke over Dr. Grabow on the left side of the shank and Imported Briar over Adjustomatic in script over Pat. 2461905. That confirmed the replacement stem. The only thing wrong with the stem was that it had lots of marks in the surface left from either a saw that was used to cut the angles or the files. The stem was not smooth and shiny like the bowl but was rough to touch with small ridges on the surface from the cut marks. The metal mortise insert had matching marks so it looks to me that the stem was cut on the shank. The thin button is perfect. A taper stem on a bulldog is something I have always liked better than a saddle so this one looked great to me.

The tenon was also ridged. I have found that when the adjusting screw is loose on my tenon turning tool I get a tenon that looks like this one. It also has a slightly deeper groove next to the bottom of the tenon where it joins the stem. These issues would need to be addressed. It would take a little bit of finessing to clean up the ridges and keep the fit of the stem snug in the metal mortise but it could be done.

I could see some nice grain under the shiny varnish coat. It was cloudy and the rim had a slight build up of tars and oils. I wiped the bowl down with acetone on cotton pads. The varnish came off and left the pad orange. I had to keep the acetone pads wet otherwise the varnish gummed up on the surface and the pads stuck to the briar. After a lot of scrubbing (three pads and much acetone to keep a wet edge) the finish was gone and the grain stood out in its beauty.

I reamed the bowl with a PipNet reamer and took the cake back to the bare briar in order to provide a smooth surface for a new cake to be developed.

I scrubbed out the shank and airway with cotton swabs, pipe cleaners and isopropyl alcohol. I scrubbed until it was clean. In this case the deepest part of the mortise was clean quickly. Most of the oils and tars came out of the metal threads of the Adjustomatic tenon insert. Even cleaning that did not take too many pipe cleaners before it was shiny. I also scrubbed the end of the shank insert to remove the varnish and tars left on the end. I sanded the scratched aluminum mortise insert/cap with a fine grit sanding block to minimize some of the scratches and remove the cut marks left behind from the manufacture of the stem. It took a bit of sanding but I was able to remove the deepest ones. The rest would polish out with sanding sponges and micromesh sanding pads.

I sanded the stem with the sanding block and then with a medium and fine grit sanding sponge. I sanded until the deeper scratches were minimized and the surface was free of the earlier ridges. I also sanded the area around the top and bottom surfaces next to the button to remove the tooth chatter that was there.

I rubbed the briar down with a folded paper towel lightly coated with olive oil. I wanted to highlight the grain and give some life to the finish before waxing it so I used the oil. Once it is wiped on and absorbs it has a glow that I like. I cover that with carnauba in the end and the finish shines and has warmth that was lacking in the previous varnish coat.

The stem did not seat well in the mortise. The flat surface of the aluminum insert needed to be beveled to let the tenon sit right in the mortise. I used a sharp knife to bevel the inner edge of the mortise to accept the tenon correctly and close up the gap between the stem and shank.

I put the stem back on the bowl and the fit against the shank was now snug with no gap. The beveling of the inside of the mortise achieved what I was hoping and the fit was perfect.

When the shaping of the replacement stem had originally been done the blade or file had rubbed against the shank in two places on the bottom sides of the diamond. It looked to me that it had rubbed off the varnish coat and also some of the stain so that the spots looked lighter than the rest of the shank and bowl. I used a dark stain pen to touch up these areas on the shank and blend them into the finish of the rest of the pipe. With the first steps in refinishing the bowl done I wanted to remove the ghosts that were in the bowl. There was an aromatic smell that I wanted to remove. I stuffed cotton balls into the bowl and set the bowl upright in an old ice cube tray. I use an ear syringe to fill the bowl with isopropyl alcohol. The bowl would sit for the day absorbing the oils from the briar into the cotton and alcohol. As the alcohol evaporated the tars would remain in the cotton.

I let the bowl sit and while the cotton and alcohol did its magic I worked on the stem with micromesh sanding pads. I wet sanded with 1500-2400 grit pads to remove the remaining surface scratches and begin to polish the vulcanite. I used some clear super glue to fill the ridges on the tenon and smooth it out before going on to sand the stem with the remaining grits of micromesh sanding pads. I rubbed the stem down with Obsidian Oil after the first set of three pads and then again after the second set. I find that the oil helps the higher grit pads to really cut into the surface and help polish the vulcanite.

The bowl had been sitting for about three hours so far. I took a picture of the cotton to show the colour that was beginning to leach into it from the bowl. I let the bowl soak for another hour and very little more came to the cotton. I pulled the cotton pads out of the bowl and ran a cotton swab through the bowl and shank to clean up the remaining alcohol there. I ran a pipe cleaner through the airway into the bowl to dry it out. I put the stem on the bowl and took it to the buffer. I buffed the pipe with White Diamond and then gave the bowl and stem multiple coats of carnauba wax. I finished by buffing it with a soft flannel buff. The finished pipe is shown below.

While I worked on this pipe I have been posting updates and asking for information on the Dr. Grabow Collectors Forum (http://drgrabows.myfreeforum.org/index.php) and gotten a lot of information from the folks there. I found out that I can order an original stem for this pipe by sending them the bowl and some money for the stem and shipping. I may well do that one day. I raise a bowl to them and dedicate this blog post to the members of that site. Thanks for the help.

My Process for Cutting off and Reshaping Broken Stems

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Blog by Steve Laug

It seems like lately I have had a few of these pipes with broken stems. I have gotten several emails through the blog asking for more information about how I go about cutting back a stem and reshaping it. Since I just finished working on the Yves St. Claude pipe where I did cut back the stem and reshape the button I thought I would use it as an example of the process. I figured that this provided the perfect opportunity to spell out more of the details that I hinted at in the full blog on the restoration of the pipe. The pictures below will show the progress from broken stem to a short saddle stem. It is only one of the methods for addressing a broken stem. Stem splicing and stem replacement are also possible solution. Soon I hope to have another blog on stem splicing but until then have a look at the piece by Jacek Rochacki where he demonstrates his method. https://rebornpipes.com/2014/02/28/some-remarks-on-dealing-with-damaged-stems-of-smoking-pipes-by-jacek-a-rochacki/

1. Before I cut off anything on a stem I spend quite a bit of time examining the broken stem. For me that means checking out the thickness of the stem material above and below the airway in the stem. There needs to be enough thickness that I can shape a button on the cut off portion. I check out the stability of the vulcanite to see if it crumbling or if the break is clean. Sometimes you need to cut quite a ways back into the stem to get either the correct thickness or stability to reform a button. I always try to imagine what the pipe will look like with a shorter stem. To help me see it I have devised a simple method. I clasp it between my thumb and finger making a straight line across the stem. Using my finger and thumb I can slide the stem as far as I want between the fingers and get a good picture of what the pipe will look like with a shorter stem. If all of these steps are passed then I get ready to cut off the broken portion.

This stem passed all the tests. The break not straight across the stem but actually was slightly diagonal. It was a very clean break with no crumbling material. The airway appears to be close to the surface on the top side of the stem but because of the angle of the break there was sufficient material there for me to cut and shape a button. I was ready to cut of this stem.

2. I marked the stem with a pencil to delineate how far I planned on cutting the stem. I use a Dremel with a sanding drum to cut off the broken portion of the stem to the point of my line. Others use coping saws or hacksaws to remove the material. Choose whatever tool you are comfortable with to do the work. For me I hold the Dremel in my right hand and the stem in my left. I keep the stem stationary while cutting but frequently rotate it in my hand to keep the edges straight. I am always conservative in the first cut only taking off what looks to be necessary. I want a solid surface to work on with the button. Once I have the cut finished I use the drum to slightly round the corners of the line. In the end I wanted to have a slight crown on the finished button so I plan for that at this point. In the two photos below you can see the slightly bow in the cut off. The cut off edge is vertical to the surface of the stem forming a 90 degree angle.

3. When the cut off is finished I take time to look at the profile of the stem. In this case the stem was quite thick. I was going to need to shave off the surface and thin the stem down but I would not do that until I had cut the button and roughed in the shape. Looking at it I could also see that I would need to flatten the stem near the new button as it had a definite rounding that would make it uncomfortable in the mouth.

4. The first tools that I use are a knife shaped needle file that has a thin edge like a blade and squared edge for the initial cuts and a folded piece of 220 grit sandpaper to clean up the newly cut edge. 5. I cut the edge with the straight edge of the file. I eyeball the line to make sure it aligns on both sides of the stem. This is a bit tricky at first but I rotate the stem to and angle where I can see both sides at once and begin the second cut. At this point in the process I am not finishing the cut but only drawing the line with the file. With the line cut and the button edge defined there is a lot of finishing work that needs to be done but you can get a clear picture of what the button will look like.

6. I use the knife edge of the file to shave the surface of the stem on the top and bottom sides. Be careful not to gouge the surface but smoothly shave it. I hold the blade at slight angle against the surface of the stem and carve toward the button. I have the stem on the table and work the blade away from myself sometimes and other times I have it in hand with the new button against the heel of my palm and work the blade toward the button. I work the blade until I have defined the line of the button and flattened the crown on the surface of the stem. Remember this is all initial carving. It will be cleaned up and smoothed out with the sandpaper and other files.

7. When I have the material in front of the button cut away and thinned down I sand it with the folded 220 grit sandpaper to get an idea of how it looks and of how much more I will need to remove from the crown on both sides of the stem. In the case of this stem I have enough material removed. I still need to shape the button and clean up the edges of the sharp edge. The top and bottom surface of the button still need to be shaped and sanded but the overall look is good to go.

8. With the rough shape finished I cut the slot in the end of the button and flare the airway. The first photo below shows the way the airway looked once I cut of the stem. You can see that there is plenty of material above and below the airway. I started the process by sanding the face of the button on my topping board and sandpaper. It is important to make sure that stem is absolutely vertical and does not tilt either way when doing this. You want to make a smooth face to work on the slot. 9. I use several different needle files to open the slot. The first file I use is a flattened oval file shown in the photo below. I work it against the right and left edges of the airway to open the slot. I don’t worry about the finished look at this point but am concerned to rough it in with the file. The flattened oval does the initial shaping work. I like a slot that is oval and tapers to a point on each side. I also work the file into the airway to taper the internals into a Y shaped funnel ending at the airway. 10. I work the top and bottom edges with the second file – an oval blade that is not flattened and almost round. I use it to work the internals into more of a smooth Y and then open the top and bottom of the slot. I follow this with a round needle file that has a thin point to clean up the opening and shape it. The photo below shows the slot after I have used all three files. 11. I fold a piece of sandpaper into a rectangle that I can fit into the slot. I work it in the slot to sand the internals and remove the file marks. I sand the face of the button to remove file marks and also sand the slot to refine the shape of oval. 12. The next photo shows the slot after I have worked it with the sandpaper. The internals are clean and smooth. I then use a pipe cleaner and isopropyl alcohol to remove any dust from the inside of the airway. The face of the stem still shows some light scratching that will be taken care of with wet sanding using micromesh sanding pads. However, you can see the new shape of the slot and how it sits on the button. That portion of the reshaping of the new button is finished and all that remains is to sand and polish the stem with the micromesh and the buffer. 13. I sanded the stem – all surfaces including the button face with a medium and a fine grit sanding sponge to remove the scratches left behind by the 220 grit sandpaper. I worked on giving the surface of the button a slight bevel downward toward the slot. I personally like a gentle slope so I don’t overdo it with the sanding.

14. With the scratches removed the stem is ready for polishing. I used micromesh sanding pads to do this work. Others use high grit wet dry sandpapers or micromesh papers. I like the way the pads fit in my fingers and how I can push the edge up against the slot to work that angle. I wet sand with 1500-2400 grit pads – wetting the surface of the stem and then sanding with the pads. I wipe it off regularly to remove the grime and check on the smoothness of the surface. I sand with each of the three grits until the particular grit no longer takes off any of the vulcanite. Once I finish with the three pads I rub the stem down with Obsidian Oil as I find it highlights the remaining scratches and also helps the micromesh to bite into the surface of the stem. I have used olive oil to do the same thing, applying it sparingly with a fold piece of cloth or paper towel. At times I have applied the oil between each of these three grits – essentially replacing the water with the oil. It works very well. 15. I dry sand (no oil or water) with the remaining grits of micromesh. I sand with 3200-4000 grit pads and then rub the stem down with oil again for the same reasons as above. I then either go back to the 1500-2400 grit pads to rework areas of concern or move on to sanding with the 6000-12,000 grit pads.

16. I buff the stem with White Diamond at this point in my process. If you do not have a buffer you can buff with a plastic polish on a cotton pad or cloth. The idea is to remove any of the remaining scratches (micro scratches really at this point) and give the vulcanite a high sheen. When I finish buffing I give the stem multiple coats of carnauba wax. When I did not have my buffer I used Kiwi neutral shoe wax which has carnauba in it and hand buffed the stem with a shoe brush. Sometimes I revert to using the shoe brush even now. Especially when buffing areas around stamping and logos.

17. The finished stem is shown below. The button looks like it has always been there. I like giving it a look that fits the age of the pipe. I don’t want it looking like a brand new button that has been tacked onto an old pipe. Rather I want it to look as if it has been there for the life of the pipe and has seen some smoothing from use. You can be the judge if I have achieved that but at least that is the aim. You can also decide how you want the buttons that you shape to look. Don’t be afraid to experiment and add your own steps or modify these so that they work for you. The end result is really all we are interested in anyway and the methods for getting there are many.

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