Tag Archives: restaining a bowl rim

Repairing an Over-Reamed Corn Cob Pipe


Blog by Greg Wolford

About three weeks ago I was contacted by fellow PSU member, and sometimes-contributor here, Astrid after she had an accident reaming a nice old corn cob pipe. Cob Pipe Pic.1

She had remembered reading about some work my grandson and I had done to a few of my cobs and was curious if I might be able to fix the chunk that had accidentally been removed when she was reaming her “Corn Dog”.  As you can see, it really is a nice old pipe, with a super (in my opinion) Bakelite stem; I was really looking forward to getting it in hand after seeing it.

As luck would have it, I have done several repairs of this type to different corn cob pipes, as well as using the general technique for everything from raising to bottom of bowls to repairing cracked bowls. So, I told her I would be happy to doctor the old cob up for her and she sent it out to me a few days later.

When the pipe arrived I had no idea of exactly what the extent of the damage was so I was anxious to see what the box from Canada held! I was pleasantly surprised to find a couple of old pipes to tinker with (and keep) as well as a generous gift of tobacco. At the bottom of the box I finally found the old pipe, and was happy to see it was just about what I’d hoped it would be: Nothing too difficult! Here are a few photos of the rim damage:Old Cob (1)_edited-1Old Cob (2)_edited-1Old Cob (3)_edited-1Old Cob (4)_edited-1

You can see the “chip” was reasonably large, but it didn’t go through the bowl – a very good thing. I started my using a dental pick to lightly scrap the damaged area to remove any loose material; there was very little, most likely because Astrid had already cleaned the pipe very well.

The next step was to mix up a patch for the damaged area. Old Cob (5)_edited-1For this project I used a new tube of fireplace mortar/sealer; my old tube had turned into stone on me. I mention this because I have found that the different brands behave differently when dry: some are impervious to moisture, while others are not. I have found that mixing in a little cigar ash (other fine ash will work too) makes the patch solid but allows for moisture and to go through to the briar (or cob in this case) and disperse better. I also mix in a little powdered activated carbon; I use the capsules now, instead of the messy process of grinding it up myself. The activated carbon does two things: it filters out any potential taste in the first few smokes that the mortar/ash patch might have and it makes it much darker, thus blending in better. The addition of these to components also makes the patch set much faster so you need to have some water on-hand to mix it right; you are looking for a dough-like consistency, wetter for longer working time. After mixing the “putty” up I began applying it with an old pipe tool’s spoon end, working it in to make a nice, Old Cob (6)_edited-1even surface, except for the top, where I left a small gap to blend in later. You can see the still wet patch in this photo, after I had smoothed it out; I used a flashlight to make the repair area easier to photograph. I then took a small amount of powdered carbon and sprinkled it onto the patch to make it blacker and less noticeable. I then set the pipe aside until morning to allow the repair to cure.

The next day it had hardened into a night patch. But, as it sometimes does, the patch had shrunken. I mixed up a little pipe mud and applied it over the patch to make it more flush inside. You can see the result of the second patch in this photo.Old Cob (8)_edited-1 You can also see here the “dip” I left in the rim; I did this to blend in the rim with wood putty.

As I was waiting on the pipe mud to dry, I took a damp cotton swab and cleaned off the rim of the pipe to make sure there was nothing to keep the next patch layer from sticking and to lighten the bit of residue on the rim already. I then applied some Elmer’s Natural Wood Putty to the rim. Again, this is something you want a little water on-hand to work with and smooth the repair as you go.Old Cob (9)_edited-1 I used both a cotton swab and my finger to apply the wood putty, shaping it as I went, but applying a little extra in case it shrank.Old Cob (10)_edited-1 After I was happy with the wood putty patch I used some of the pipe mud and charcoal powder to mute the brightness of the rim repair. This would ultimately be sanded and stained so I didn’t spend too much time or effort on this step, only on making sure the inside or outside of the bowl didn’t have an excess on them.

The weather was rainy and humid during the time that I worked on this pipe so extra drying time was required on each step/patch. At this point I set the pipe aside for a couple of days to be assured that everything was well dried and cured before I moved onto the final shaping and stain blending.

When I came back to the pipe I checked to make certain the repairs were all well cured, and they were: very solid feeling all the way around. Now it was time to shape the rim; I wanted to get the top nice and even but didn’t want to take away the character of the rim so I opted to lightly top the bowl with 400 grit wet/dry paper, checking often. Old Cob (13)_edited-1After I was satisfied with the rim being level, I used the same sandpaper to touch up the edges just a bit. Looking well-shaped to my eye, I broke out the stain markers I so often rely on, choosing the lightest color I had for staining and blending the rim.

All in all, I think this was a successful repair job that came out quite well. I am sure that after a few gentle smokes that the rim will take on an even more “natural” and blended look. And best of all, I think this old corn cob pipe will provide many more years of good service to Astrid – and maybe even to someone else down the road!Old Cob (11)_edited-1 Old Cob (12)_edited-1

 

Repairing a Stem on a Dr. Grabow Grand Duke with Black Superglue


I took on this project to demonstrate how I use black superglue to repair deep bit marks/bite throughs on vulcanite stems. I had this old Grabow stummel in my box and I found a stem that looked good on the bowl. The bowl had a small hairline crack in the shank so I pressure fit a band on it for a repair. The bowl needed to be topped so I did that after banding. I restained the top to match the bowl colour. I used a dark brown aniline stain that I mixed with isopropyl alcohol until I got the match I was looking for. I stained and flamed the rim to set the stain. The stem was in pretty rough shape but I decided to use it anyway and take it on as a project. The button was almost gone from the deep bite marks. There were three bite marks on the underside of the stem near the button and on bite mark on the top of the stem. I decided to use the boiling water trick to try to raise the dents as much as possible. These were deep bite marks and the edges were rough so my guess was that they would not come up to the surface with the heat. I then sanded the surface of the stem with medium grit emery paper to remove the surface marks and dents and then smooth out the area of the deep bite marks. I work to have a semi rough surface for the superglue to bond with so I am not sanding it smooth as much as working it over to make it clean. The next three photos show the state of the stem after I had sanded it and readied for patching.

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Once I had sanded the surface smooth I used my needle files to recut the sharp edge of the button and rework the flow and angles of the button. I also used the needle files to carve the surface of the stem and provide a gentle slope to the new button area. I have found that often when recutting the button and defining its shape it is easy to cut a trough and make a hump in front of the newly shaped button so I always start about half way up the stem and use the file to change the taper to flow to the edge of the button. This served the dual purpose of removing high spots on the bite marks and to help identify the actual holes that would need to be patched. The next two photos show the file work on the stem.

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Once I had the slope correct and the button shaped I put the stem in the ebony block I had drilled with a mortise to allow me to sand the rest of the stem without rounding the shoulders of the stem. I wanted the stem shank junction to be smooth and well fit. I also wanted the oxidation removed from the stem before I patched it with the superglue. I did not want the oxidation to remain in the holes that I would patch or on the surface of the stem. I sanded it down and removed the oxidation. I spent extra time around the bite marks. I also picked out any loose debris in the marks with a dental pick and then wiped it down with alcohol to remove the dust and provide a clean surface for my patch work.

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The next series of three photos show the patch in place. I use black superglue that I pick up from Stewart-Macdonald http://www.stewmac.com/shop/Glues,_adhesives/Stewart-MacDonald_Super_Glues.html I have found that it really works well. I drip it on the cleaned hole and make a bubble of superglue. This particular glue dries slowly so I do one side of the stem at a time. I let it dry for over an hour before turning it over and doing the same thing on the other side of the stem. Once I have made the patch I set the stem aside to dry overnight. I do not want to touch it or sand it until it has had that time to cure and become hard. I have tried sanding sooner but always end up patching the holes a second time because of my impatience.

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Once the glue has cured and is hard it forms a small bubble of black on the surface of the stem. I sand the bubble flat to the surface and taper of the stem. I use a 320 grit sandpaper to accomplish this sanding. At this point in the process I am not looking for shininess or polish I am only trying to blend the patch into the surface of the stem. The next five photos show the process of sanding down the bubble and the look of the resulting patch on the stem. The tooth marks are gone and in their place is a black patch that with a bit more polishing and sanding with micromesh will blend into the stem well and give a new polished look and comfortable feel to the stem.

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The underside of the stem. Notice the patch near the button after sanding with 320 grit sandpaper. The patch on the underside is larger than the one on top but it not as deep.

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The bubble of black superglue on the top of the stem. The white dust on the stem is not a problem as the bubble is dry at this point and ready to sand.

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The top side of the stem after the initial sanding of the bubble. It is almost smooth and needs to be wet sanded with the micromesh sanding pads.

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Top side of the stem after the patch has been wet sanded with 1800 grit micromesh sanding pads.

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The top side of the stem after the patch has been wet sanded with 1800 grit micromesh sanding pads. There are still scratches that remain in the stem on both the top and the bottom that more sanding will remove. The patch will also blend in better as the stem itself begins to shine.

The next series of photos show the stem as I sand it with the various grits of micromesh sanding pads. Between the 2400 and the 3200 grit sanding pad I scrubbed the stem with Maguiar’s Scratch X2.0 to polish out some of the remaining scratches.

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The top side of the stem after wet sanding with 1800 grit micromesh sanding pads.

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The underside of the stem after wet sanding with 1800 grit micromesh pads.

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The top side of the stem after wet sanding with 2400 grit micromesh pads. The patch is beginning to be harder to see on the surface of the stem.

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The underside of the stem after wet sanding with 2400 grit micromesh pads.

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The top side of the stem after I polished it with the Maguiar’s Scratch x2.0. The patch is blending in very well on the top side. If you did not know where it was it would be hard to see.

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The underside of the stem after polishing with the Maguiar’s. The patch is also beginning to blend in very well on this side of the stem as well.

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The top side of the stem after I had dry sanded it with the 3200 grit micromesh pads.

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The underside of the stem after dry sanding with the 3200 grit micromesh pads.

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Topside of the stem after sanding with 3600 and 4000 grit micromesh pads. The patch is virtually hidden to the camera at this point as the stem begins to shine.

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Underside of the stem after sanding with 3600, 4000 grit micromesh pads.

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Top side of the stem after sanding with 6000, 8000 and 12,000 grit micromesh pads.

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The underside of the stem after sanding with 6000, 8000 and 12,000 grit micromesh.

The next series of four photos show the finished pipe after buffing with carnauba wax and a soft flannel buff to give it a shine. The pipe is restemmed, repaired and ready for it next smoke.

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