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Old 11-07-2017, 09:51 AM   #1 (permalink)
 
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Question Too much material left

I just finished assembling three pens and they look like crap, at least to me. I turned down as close to the bushing but when assembled, there is a lot of material above the parts. These are WC Slimline pens and acrylic blanks. I got a PSI catalogue and saw the catalogue had a set of mandrels, P/N PKMBCM2. Are they worth it? I have considered TBC and looked at the 60 degree live center at a couple of places. Recommendations for headstock and tailstock for TBC? I need to move up a couple of steps in quality as I am picky. I have a three piece set of calipers and a dial caliper so measuring diameter isn't an issue.
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Old 11-07-2017, 11:21 AM   #2 (permalink)
 
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I just finished assembling three pens and they look like crap, at least to me.

First we had elephant poo pens, now we have this. Looks like it is a theme.

In all seriousness TBC was the best thing that happened to our pen quality.
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Old 11-07-2017, 12:18 PM   #3 (permalink)
 
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TT, how do you TBC??
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Old 11-07-2017, 01:01 PM   #4 (permalink)
 
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http://content.penturners.org/librar...en_centers.pdf

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Old 11-07-2017, 01:21 PM   #5 (permalink)
 
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TT, how do you TBC??


I just use the regular bushings between 60 degree live and dead center.

We have invested in some custom TBC bushings which are nice and seem to be a little less wear on the live and dead center. Both work well.

We have found that all bushings ARE NOT created equal. We just returned a set to WC where the center hole on the bushing was visibly off. This will not work on any method. WC replaced it no questions.
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Old 11-07-2017, 01:50 PM   #6 (permalink)
 
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I would check the diameter of the bushings against the diameter of the components. You might have gotten a set of mislabeled or out-of-spec bushings.
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Old 11-07-2017, 01:51 PM   #7 (permalink)
 
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If you are referring to the PSI Turn Between Center mandrel set for $29.99, then I have been using mine since they came out. I love them because it is almost impossible to bend the mandrel rods, even when you have big catch occur.
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Old 11-07-2017, 01:59 PM   #8 (permalink)
 
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eharri46, thanks.
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Old 11-07-2017, 02:17 PM   #9 (permalink)
 
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Measure the components and turn to that size, use the bushings as a get close guide. Does anyone make turn between center bushings for a slimline?
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Old 11-07-2017, 02:47 PM   #10 (permalink)
 
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After turning down to the bushings, I like to mount the blank (between centers) without the bushing and SLIGHTLY round the edges. That way, even if the diameter is slightly larger than the pen components, you won't feel that hard edge. Sort of like the way they have "2.5D" glass on cells phones, with the curved edges...
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