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PostPosted: Tue Feb 13, 2018 9:32 am 
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I caught a thread here and also saw on the interwebs where some carvers were were using delrin even though they had the tooling to just turn the rod stock and make a tenon integral to the rod. Is this to add some flexibility as well as strength to the tenon? I initially only thought this to be a way of salvaging a failed stem but now I'm reconsidering my ideas.


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PostPosted: Tue Feb 13, 2018 10:27 am 
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I frequently use Delrin for strength and flexibility, especially when doing a Canadian or Lovat when I do a 1/4” tenon. Part of my reasoning is that in addition to the above, I can finish and polish the stem face more easily prior to doing the tenon.
It’s about the same in terms of work.
I am not certain how the buying public views a Delrin tenon, but that’s up to them.
DocAitch

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PostPosted: Tue Feb 13, 2018 10:52 am 
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advantages of delrin are the dimensional stability (i.e. all your tenons are EXACTLY the same diameter, even when temperatures change a bit) so it can actually be quicker and easier to do. Plus it's stronger than acrylic or ebonite and it's self lubricating.

Downside is the whole drilling a hole, roughing the surface, glueing it, ...

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PostPosted: Tue Feb 13, 2018 11:45 am 
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I use delrin sometimes, but there are two downsides that keep me using integral tenons most of the time.

1. Delrin tenons have to be glued/epoxied in place and unless you're making a good mechanical connection, it can fail.
2. Delrin tenons limit the flexibility of where you can and can't put a saddle.

Aside from that, it's just a preference.

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PostPosted: Wed Feb 14, 2018 4:09 am 
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I almost always use a delrin tenon. Several reasons:

Polyester is not suitable for integral tenons, at least not small ones.
I use the same size tenon for just about all my pipes. I like the consistency.
I prefer a smaller size which would be weak as an integral.
I find it faster and easier.
I can interchange stem blanks easily between pipes, great if I mess up a pipe or a stem.

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PostPosted: Wed Feb 14, 2018 4:37 am 
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Joined: Tue Jan 16, 2018 8:10 pm
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Thanks everyone.. great and insightful feedback. I can see reasons for doing it and not doing it now.


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