Carlos from north of San Francisco,CA

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C

cjn

Member
Joined
Apr 2, 2014
Messages
4
Location
Mill Valley, CA
Hello All,
Thank you for the information I've read here. I started turning pens in January and the learning curve has been a lot easier as a result of the knowledge you have all share.
I have a question about nomenclature. I am a dentist and we have terminology when discussing the fit of a casting with a tooth.
Is the terminology the same?
(ie.) The margin is the junction of the tooth(wood) and casting. There are many types, but the pens I've seen are all shoulder(butt) margins.

Margin evaluations:
Open- The casting has a gap with the wood
Closed- The casting is sealed all the way around
Plus margin- The wood is proud of the casting
Sub margin- The wood doesn't reach the casting
Are these the correct terms for pen making? What are acceptable tolerances? Is there a general consensus as to whether it is better to be a little plus?
Emergence profile- is the curve outline that the casting makes when meeting the wood. Is this a consideration in pen making?

I've made about a dozen pens so far and it has been a great and enjoyable experience.
Thank you again,
Carlos Nogueiro, D.D.S. (newbie)
 
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Welcome Carlos from Denver Colorado. I think your terms are fine but I don't believe I have ever seen them used on any pen turning forum. My Daughter also a dentist uses them all the time also. Anyway enjoy the forum and post some pics.
 
Brian Kent from San Diego

Greetings from San Diego.

I am an 8 year hobbyist at wood-working and have turned for 2 years. I just made my first dozen pens and look forward to exploring.

Thanks in advance for the journey.

Brian Kent
 
Welcome to the club! We can't agree on what to call anything - we have 17,000 members and 18,000 opinions! :eek:

If you are referring to wood and resin castings, once we turn then, they are smooth - neither proud nor low, either butt or overlapping, doesn't matter. The appearance is a one piece.

If you are talking about where the blank material meets the metal hardware, we probably are in agreement on that - anything beyond a perfect match is in need of improvement. We refer it as over turned (below the adjoining hardware) or under turned (above the adjoining hardware). I also try to match the curvature or slope of the adjoining hardware to improve the lines of my pens. I hope I understood your question.
 
Welcome Carlos, from Sydney Australia.
I am afraid that most Pen Turners, who come from extreem diverse cultural, educational and occupational backgrounds, would have to stop too long and think about the meaning of "sub margin" etc., and leave that for those who find a need for "Pro Speak".
Brian.
 
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