Blog by Greg Wolford
Browsing my Twitter feed this morning I noticed a conversation between Steve (@rebornpipes) and Peter Jones (@edpipeclub) about raising tooth marks on a stem with different methods of heat application. The methods discussed were using a soldering iron or a heat gun; Peter had access to the former but not the latter. I tweeted him that a candle flame is also a good option and Steve suggested I post a blog about that. So, without further introduction, here we go!
I use a heat gun if the dents are very deep, or I’m bending a stem, in the shop. But since I’ve been doing more restoration work in the kitchen, upstairs, I have found a candle to be a simple and effective tool for smaller, more shallow dents. A Bic-style lighter will also work for this method but I find myself with a “hot thumb” too often for my tastes using that!
Although about any candle would likely do, I prefer to use a tea candle, such as this:
They are inexpensive and small, which makes them easy to work with. And since my wife uses them for her potpourri-type pot, I almost always have them on hand.
What I do is light the candle and hold the stem about 2″ above the flame, maybe a little more. It’s fairly important to keep the stem moving so as to not burn the stem; if the stem is acrylic or nylon keeping moving and higher above the heat is all the more important as, in my experience, ties materials will burn or catch fire with less “notice” and faster than vulcanite. Often with vulcanite you’ll smell an almost burnt-rubber smell before any damage is really done, and this is a sure sign you need to cool the stem; I keep a Tupperware type container of cold water beside me as I do any of this kind of work, no matter what me heat source.
After a couple of minutes you’ll notice that the dents are raising up, the heat decompressing the material the stem is made of. Depending on the depth and size of the dent, it can take anywhere from one “pass” to three or more to get the dent as decompressed as possible. If the dent is too large/deep a fill will be required to get it completely level again.
I hope this extra “weapon” in your restoration arsenal is helpful to you; this method may not always be the best way to go but often will be more than sufficient and quick to set up and break down.
rebornpipes 