Daily Archives: March 16, 2025

Restoring a Handsome Peterson Dunmore 73


by Kenneth Lieblich

Lá Fhéile Pádraig sona duit!

As it is the feast of Saint Patrick, I thought I would post an Irish pipe today – even though I have no Irish heritage myself. No matter! Petersons are very popular, so why not put some spit and polish on this handsome devil. I nabbed this beauty a couple of years ago and, unaccountably, it’s been sitting around waiting for me to clean it up. Let’s look at the markings. On the left side of the shank are the words Peterson’s [over] “Dunmore”. On the right side of the shank are the words Made in the [over] Republic [over] of Ireland. Then down and to the right of that is the shape number, 73. Finally, on the left side of the stem, is the stylized letter P of the Peterson Pipe Company.I’ve always found the scalloped edge at the end of Dunmore shanks to be quite attractive. Let’s investigate the Dunmore line a bit more. Mark Irwin of the Peterson Pipe Notes blog has a great article about Dunmores, which you should read here. Allow me to quote a few passages:

The line originated in collaboration with Iwan Reis in 1971. How it came about is anyone’s guess at this point. Chuck Levi, the man who more than any other was responsible for bringing the great Danish artisan pipes to the US, was working with the creative minds at K&P to bring something new to the IRC catalog, and this was one of about a dozen K&P lines that debuted as exclusives in the Iwan Reis catalogs of that era.The concept was to modernize the System pipe by removing what was perceived as the old-fashioned nickel mount. And old-fashioned it was—if you look at pipe catalogs from the 1940s on through most of the rest of the 20th century, nickel ferrules and even bands were almost non-existent. K&P was virtually the only hold out, using sterling bands on the Sterling Silver Classic line and on the Premier & De Luxe Systems. A bead was then carved around the stummel at the mortise end…

But there were two more ingredients to the original Dunmore aesthetic…. Paddy Larrigan, K&P’s master-craftsman, was always striving to push the envelope in pipe engineering, and one of the things he dearly loved was a pipe that would sit, so he shaved off the bottom of the shank to allow the Dunmore System to sit on its shank and button, which gives it its uniqueness in the catalog. The downside of this is that I am not convinced that all the Dunmore reservoirs, being slightly smaller than the traditional System, are quite as effective. 

The third distinguishing mark of the original Dunmore lines is the stem. Both the System and Classic versions utilized the wide-shoulder “Comfort Lip,” with a painted  gold P on the stem. This doubtless helps the System sit as well as giving it a more muscular visual balance, strength being a long-standing concept in the design language of the company. While it gives the illusion of being an army “push” mount, of course it isn’t, but is a traditional tenon-mortise or “navy mount” as the old hands at K&P used to call it.Based on Mark’s information on his website and in his book, The Peterson Pipe Book, I can estimate that this pipe is from the mid- to late-70s – something like 50 years old. Many thanks to Mark for his help.On to the work! The pipe was in good shape and – boy-oh-boy – it had been smoked a lot! Things were dirty, rather than damaged – which is much preferred. The stem was oxidized and had a few tooth marks, but nothing deep or large. The stummel was loaded with cake and had substantial lava on the rim.I used a disposable lighter and ‘painted’ the stem with its flame. The gentle heat of the flame can cause the dents in the vulcanite of the stem to expand back into shape. In this case, it actually worked reasonably well and there was a bit of lift.I used oil soap on a few cotton rounds and wiped the stem down to provide an initial cleaning of filth before moving on to the next steps. The primary cleaning comes next. I cleaned the inside of the stem with both pipe cleaners and cotton swabs dipped in 99% lemon-infused isopropyl alcohol. I scrubbed thoroughly to make sure the interior was clean. I used quite a few pipe cleaners and cotton swabs – more than the photo shows.The goal of the next step is the removal (or minimization) of oxidation. Going to my sink, I used cream cleanser, cotton rounds, and a toothbrush, and scoured the stem to remove as much surface oxidation as possible. As the photos show, the result is a hideous brownish mess – but better off the stem than on it. Once the stem was reasonably clean, I soaked it overnight in some Briarville Stem Oxidation Remover. This solution works to draw oxidation in the stem to the surface. This is a major aid and an important step in ensuring a clean stem. The following day, I drew the stem out from its bath and scrubbed the lingering fluid with a toothbrush. Now that the stem is clean and dry, I set about fixing the marks and dents in the vulcanite. This is done by filling those divots with black cyanoacrylate adhesive, impregnated with carbon and rubber. I left this to cure and moved on. After this, I painted the logo on the stem with a gold-coloured metallic wax finish. I restored the logo carefully and let it fully set before proceeding.The penultimate step for the stem is sanding. First, with my set of needle files, I reduce the bulk of the cyanoacrylate repairs. I want to remove the excess adhesive as near to the surface as possible, without cutting into the vulcanite. Following that, I use all nine of the micromesh sanding pads (1,500 through 12,000 grit) to sand out flaws, even out the vulcanite, and provide gentle polishing of the finished surface. I also apply pipe-stem oil while using the last five micromesh pads. There was a wonderful, deep black shine to the stem when I was done.Now that the stem is (nearly) complete, I can move on to the stummel. The first step for me is to ream out the bowl – that is to say, remove all the cake inside the bowl. This accomplishes a couple of things. First (and most obviously), it cleans the bowl and provides a refurbished chamber for future smoking. Second, when the old cake is removed, I can inspect the interior walls of the bowl and determine if there is damage or not. I used a reamer, a pipe knife, and a piece of sandpaper taped to a wooden dowel. Collectively, these ensure that all the debris is removed.My next step was to remove the lava on the rim. For this, I took a piece of machine steel and gently scraped the lava away. The metal’s edge is sharp enough to remove what I need, but not so sharp that it damages the rim. Similar to the stem, I then cleaned the stummel with both pipe cleaners and cotton swabs dipped in 99% lemon-infused isopropyl alcohol. With a pipe this dirty, it took quite a while and much cotton to get clean. It was so, so dirty.I then decided to ‘de-ghost’ the pipe – that is to say, exorcize the remaining filth from the briar. I filled the bowl and the shank with cotton balls, then saturated them with 99% isopropyl alcohol. I let the stummel sit overnight. This caused any remaining oils, tars and smells to leach out into the cotton.To tidy up the briar, I also wiped down the outside with some oil soap on cotton rounds (and a toothbrush). This does a good job of cleaning any latent dirt on the surface of the briar. I also used a nylon brush on the rim. The last step of the cleaning process is to scour the inside of the stummel with some soap and tube brushes. This is the culmination of a lot of hard work in getting the pipe clean.I used all nine micromesh pads (1,500 through 12,000 grit) on the outside of the stummel to finish it off. This sanding minimizes flaws in the briar and provides a beautiful smoothness to the wood. I rubbed some Before & After Restoration Balm into the briar and let it sit for 20 minutes or so. The balm moisturizes the wood and gives a beautiful depth to the briar. I then buffed it with a microfibre cloth. For the final step, I took the pipe to my bench buffer and carefully polished it – first with a white diamond compound, then with three coats of carnauba wax. This procedure makes the pipe look its best – the stummel sings and the stem glows.

All done! This Peterson Dunmore 73 looks fantastic again and is ready to be enjoyed by its next owner. I am pleased to announce that this pipe is for sale! If you are interested in acquiring it for your collection, please have a look in the ‘Irish’ section of the store here on Steve’s website. You can also email me directly at kenneth@knightsofthepipe.com. The approximate dimensions of the pipe are as follows: length 5¼ in. (133 mm); height 3 in. (76 mm); bowl diameter 1⅛ in. (30 mm); chamber diameter ⅝ in. (18 mm). The weight of the pipe is 1¼ oz. (36 g). I hope you enjoyed reading the story of this pipe’s restoration as much as I enjoyed restoring it. If you are interested in more of my work, please follow me here on Steve’s website or send me an email. Thank you very much for reading and, as always, I welcome and encourage your comments.

Restoring a Second Duncan Hill Aerosphere Rusticated Apple – another of the 12 Pipes


by Steve Laug

Back in January I received an email from Robert with a group 12 pipes that needed to be restored in various ways from cleanup to restemming. I chose to work on the second Duncan Hill Aerosphere pipe that he sent next. It is a nice-looking rusticated apple – one of my favourite shapes. The bowl and shank were in good condition but the finish was very dirty. The bowl had been reamed at some time so there was no cake in it. The rim top was clean but had some darkening around the top and the inner edge. The pipe was stamped on the underside of the bowl and shank and read Aerosphere [over] Duncan Hill. This one came with the original stem in place on the shank. It had the triple rings on the stem and a white acrylic (Delrin) tenon. It was oxidized and calcified on the button end. There were light tooth marks on the top and underside of the stem near the button. It had the classic Aerosphere system stem with the carburetor on the left side of the half saddle stem. I took some photos of the pipe to show its condition before I started my work on it. I took some closer photos of the bowl and rim top to show its condition before I started my work on the pipe. You can see the clean bowl and the darkening on the rim top. The stem photos also show the general condition of the stem as noted above. I took a photo of the stamping on the underside of the bowl and shank. It was stamped on a smooth panel and was faint but readable. It reads as noted above. I removed the stem and took a photo of the parts of the pipe to show the look of the pipe.Before I started work this one I reread what I had posted on the Duncan Hill Restem job I did. I have included what I found below.  I Googled Duncan Hill Aerosphere and the first bit I found was from a Google group for ASP. There I found the following quote. I have the reference link placed at the end of the quote if you want to follow up on the information:

“The Duncan Hill Aerosphere smoking system (U.S. patent #4,275,747) utilizes the same principle of physics as the manometer. The Aerosphere, visible as the brass pin on the side of the mouthpiece, brings a scientifically measured amount of air into the stem with each puff. The control of the amount of air and the velocity of the air produces two effects that result in superior smoking pipe performance.” https://groups.google.com/forum/#!topic/alt.smokers.pipes/GUxdN5Dus4Q

I also found a link to an advertisement for the brand featuring the designer in Popular Mechanics Magazine, February 1980, pg. 31 on Google books. Here is the link:
https://books.google.ca/books?id=m9UDAAAAMBAJ&pg=PA31&lpg=PA31&dq=Duncan+Hill+Aerosphere+Pipes&source=bl&ots=tR4egGI0ig&sig=XeACE0-Vh19-1JNcA0kAgS87kRI&hl=en&sa=X&ei=p1QbVbPTEpLvoATEpoLoCQ&ved=0CBwQ6AEwADgU#v=onepage&q=Duncan%20Hill%20Aerosphere%20Pipes&f=falseNext is an advertisement from Popular Mechanics Magazine, September 1982, pg. 216 on google books. Here is the link. https://books.google.ca/books?id=f9kDAAAAMBAJ&pg=PA216&lpg=PA216&dq=Duncan+Hill+Aerosphere+Pipes&source=bl&ots=fsZtVqD0z9&sig=Kl3wI-76NJqpFxAg8SPndnnWyqM&hl=en&sa=X&ei=owEcVdGGKdj9oQSD_4L4Bw&ved=0CCgQ6AEwAjgo#v=onepage&q=Duncan%20Hill%20Aerosphere%20Pipes&f=falseFinally using the patent number in the ASP quote I was able to find the patent documents for the pipe on the US Patent Office site. I have included the documents from the US Patent Office here. There are four pages – 2 of drawings and two of description. I love finding this old information and reading about the persistent search for the dryer cooler smoking pipe that has led to many creative solutions. It lends some colour to the work of my refurbishing to be able to read about the design ideas and the inventors themselves as I work on the pipes. Armed with new information it was time to work on the pipe.

I decided to start on the bowl itself. I worked over the rim darkening with a folded piece of 220 grit sandpaper. The smooth rim top was crowned so it was an easy process to clean it up at the same time as the edge.I scrubbed the exterior of the with undiluted Murphy’s Oil Soap and a tooth brush. I worked on the rustication and the smooth rim top. I rinsed it off with warm running water and dried it off with a cotton towel. It is definitely looking better. I worked on the rim top and edges with 320-3500 grit sanding pads to further remove the darkening on the briar. It is improving with each pad. I wiped the top down with a damp cloth to remove the sanding debris. I polished it with 1500-12000 grit sanding pads and wiped it down with a damp cloth after each pad. The rim top looked very good. I cleaned out the shank, mortise and the airway in both the shank and the stem with alcohol, cotton swabs and pipe cleaners. The shank was very dirty. The airflow is great.I rubbed the bowl down with Before & After Restoration Balm. It is a paste/balm that works to deep clean the finish, enliven and protect the briar. I worked it into the briar with my finger tips to make sure that it covered every square inch of the pipe. I set it aside for 10 minutes to let it do its work. I buffed it with a cotton cloth. The briar really began to have a deep shine. The photos I took of the bowl at this point mark the progress in the restoration. I set the bowl aside and turned my attention to the stem. I scrubbed the stem surface with Soft Scrub to remove the oxidation and the calcification. It looked much better. The tenon was a clear/white Delrin that was stained with tars and oils.I sanded the stem with 320-3500 grit sanding pads. I wiped the stem down after each pad with an Obsidian Oil impregnated cloth to remove the sanding debris. It began to take on a shine.I polished the stem with micromesh sanding pads – dry sanding with 1500-12000 grit pads. I wiped it down with some Obsidian Oil after each sanding pad. I polished it further with Before & After Stem polish – both Fine and Extra Fine and then wiped it down another time with the oil. I put the Duncan Hill Aerosphere Rusticated Apple and the stem back together. I polished the bowl and stem with Blue Diamond to polish the briar and the vulcanite. I gave the bowl multiple coats of Conservator’s Wax and the stem multiple coats of carnauba wax. I buffed the pipe with a clean buffing pad to raise the shine. I hand buffed it with a microfiber cloth to deepen the shine. The pipe polished up pretty nicely. The original brown stains gave depth to the rustication and worked amazingly well with the polished vulcanite half saddle stem. The grain around the bowl and shank and looks quite remarkable. This is truly a beautiful Duncan Hill Aerosphere. The finished pipe is shown in the photos below. The dimensions of the pipe are Length: 6 inches, Height: 1 ½ inches, Outside diameter of the bowl: 1 ½ inches, Chamber diameter: 7/8 of an inch. The weight of the pipe is 1.52 ounces/42 grams. This is such a unique shape that I am going to enjoy it for awhile before deciding what to do with it. Thanks for walking through the restoration with me. Cheers.

As always, I encourage your questions and comments as you read the blog. Thanks to each of you who are reading this blog. Remember we are not pipe owners; we are pipe men and women who hold our pipes in trust until they pass on into the trust of those who follow us.

Restoring a tired Dunhill Shell Group 4 Diplomat


by Steve Laug

I have been working on the 12 pipe lot since I got back from Asia along with two other repairs that I took on before I left. I need a break to work on something of my own for a bit. I went through my boxes from Jeff here and chose a Dunhill to bring to the work table. It is a shape that I have not worked on before and it intrigued me. It was one that we had purchased from a fellow in Ogden, Utah on 12/12/24. It is a unique Dunhill Shell Diplomat with a great sandblast. The stamping on the underside of the shank had a Circle 4 on the heel of the bowl identifying it as a group 4 size pipe. That is followed by Dunhill Shell [over] Made in England followed by a number 21 to the right of the D in England that will help me date the pipe. The bowl had been reamed not long ago. There was some dust and debris in the sandblast on the rim but the inner and outer edge looked good. The sandblast finish was rugged and dirty but it could not hide the lovely blast around the bowl and shank. The stem was clean and there were light tooth marks on the top and underside ahead of the button. The classic Dunhill White Spot was on top of the taper stem. Jeff took photos of the pipe before he started his clean up work. I have included them below. He took photos of the pipe’s bowl and rim top to show the cake in the bowl and the lava coat overflowing onto the top. He also took photos to capture the tooth marks on the top and underside of the stem near the button. The stem is also oxidized and calcified. He took photos of the sides and heel of the bowl to show the interesting sandblast grain around the bowl and the amount of grime ground into the surface of the briar.   He took photos of the stamping underside of the shank. It is clear, though in some places it is faint. The overall text is still quite readable. As is my regular practice, before I started my work on the pipe, I turned to Pipedia’s section on Dunhill Shell Pipes to get a refresh the information I know regarding the Dunhill finishes (https://pipedia.org/wiki/Dunhill#Root_Briar). I quote:

Shell

A deep craggy sandblast with a black stain finish (usually made using Algerian briar) – the color of the stain used has varied over the years. Although there is some doubt as to them being the first to sandblast pipes, Dunhill’s Shell pipes, and the sandblasting techniques developed to create them are considered one of Dunhill’s greatest and most lasting contributions to the art of pipe making.

The documented history of Dunhill’s inception of the Shell is largely limited to patent applications — there are no catalog pages or advertisements promoting blasted pipes at the time. The preliminary work on the English patent (No. 1484/17) was submitted on October 13, 1917. The patent submission was completed half a year later, on April 12, 1918, followed by the granting of the English patent on October 14, 1918. This was less than a month before the end of The Great War on November 11th.

In 1986 Dunhill released a line of premium Shell finish pipes – “RING GRAIN”. These are high-quality straight grain pipes which are sandblasted. Initially only Ring Grain, but now in two different finishes. In 1995 the “Shilling” was introduced with Cumberland finish – it is an extremely rare series. These pipes exhibit a deeper blast characteristic of that of the 1930’s – mid-1960’s (and the limited ‘deep blast’ pipes of the early 1980s) and show a fine graining pattern. These are considered the best new Dunhills by many enthusiasts today and are very rare. The finish is sometimes described as tasting like vanilla at first, with the taste becoming more normal or good as the pipe breaks in.

There was also a link to a catalogue page that gave examples and dates that the various finishes were introduced (https://pipedia.org/wiki/File:Dunnypipescatalog-1.png).I turned to Pipephil’s dating guide to show how I arrived at the date of manufacture for this pipe (http://www.pipephil.eu/logos/en/dunhill/cledat-en1a.html). I am including the chart that is provided there for the dating a pipe. I have drawn a red box around the section. Since the pipe I am working on has a superscript suffix 21 after the D in England it points to the 1960 line on the chart below. To date it just add 1960 +21 for a date of 1981. I have drawn a red box around the pertinent section in the chart.I now knew that I was working on a Shell that came out in 1981 as far as I could tell by the faded date stamp. The shape of the pipe is called a Diplomat but there was no shape number stamped on the heel of the bowl. From the shape chart on the site I could know that I was dealing with a Diplomat (http://www.pipephil.eu/logos/en/dunhill/shapes.html).

Armed with that information I turned to work on the pipe itself. Jeff had done a great job cleaning up the pipe as usual. He cleaned up the inside of the bowl with a PipNet reamer and a Savinelli Fitsall Pipe Knife. The bowl walls looked very good. He scrubbed the interior of the bowl and shank with pipe cleaners, cotton swabs and alcohol to remove the tars and oils. He scrubbed the exterior of the pipe with Murphy’s Oil Soap and a tooth brush to remove the grime from the finish. He worked on the rim top lava and darkening with the soap and tooth brush. He scrubbed the inside of the stem with alcohol and pipe cleaners. He scrubbed the exterior with Soft Scrub and then soaked it in Briarville’s Pipe Stem Deoxidizer. He washed it off with warm water to remove the deoxidizer. The pipe looked far better. I took photos of the pipe when I received it before I started working on it. I took photos of the bowl and rim top to show how clean it was. The top and the inner edge of the rim look very good. The stem looks clean of debris and grime. There are light tooth marks and chatter on both sides.I took photos of the stamping on the underside of shank. The stamping is clear and readable (though in some spots it is faint). I took a photo of the pipe with the stem removed to show the overall look of stem, tenon and profile of the pipe. Now it was time to work on the pipe. The bowl was in excellent condition so it took little work to prepare it. It was very clean so I rubbed the bowl down with Before & After Restoration Balm. It is a paste/balm that works to deep clean the finish, enliven and protect the briar. I worked it into the briar with my finger tips to make sure that it covered every square inch of the pipe. I set it aside for 10 minutes to let it do its work. I buffed it with a cotton cloth. The briar really began to have a deep shine. The photos I took of the bowl at this point mark the progress in the restoration. I set the bowl aside and turned my attention to the stem. I “painted” the stem surface with the flame of a lighter to lift the tooth marks on the top and underside. It worked very well. I filled in the two remaining marks on the stem with rubberized black CA glue. I set the stem aside to let the repair cure. Once the repair had cured I sanded it smooth with a folded piece of 220 grit sandpaper. I was able to blend in the repair on the surface of the stem. It looked much better and the repair was solid.I sanded the stem with 320-3500 grit sanding pads to break up the remaining oxidation. I wiped it down after each sanding pad with an Obsidian Oil impregnated cloth. It began to look good.I polished the stem with micromesh sanding pads – dry sanding with 1500-12000 grit pads. I wiped the stem down after each sanding pad with Obsidian Oil. I polished it with Before & After Pipe Stem Polish – both Fine and Extra Fine. Once I had finished the polishing I gave it final coat of Obsidian Oil and set it aside to dry. I put the 1981 Dunhill Shell Diplomat bowl and stem back together. I polished the bowl and stem with Blue Diamond to polish the briar and the vulcanite. I gave the bowl multiple coats of Conservator’s Wax and the stem multiple coats of carnauba wax. I buffed the pipe with a clean buffing pad to raise the shine. I hand buffed it with a microfiber cloth to deepen the shine. The pipe polished up pretty nicely. The Shell Briar stains worked amazingly well with the polished vulcanite taper stem. The grain around the bowl and shank and looks quite remarkable. This is truly a beautiful Dunhill Shell Diplomat. The finished pipe is shown in the photos below. The dimensions of the pipe are Length: 6 inches, Height: 1 ½ inches, Outside diameter of the bowl: 1 inch, Chamber diameter: ¾ of an inch. The weight of the pipe is 1.59 ounces/45 grams. This is such a unique shape that I am going to enjoy it for awhile before deciding what to do with it. Thanks for walking through the restoration with me. Cheers.

As always, I encourage your questions and comments as you read the blog. Thanks to each of you who are reading this blog. Remember we are not pipe owners; we are pipe men and women who hold our pipes in trust until they pass on into the trust of those who follow us.