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Sac Shellac Vs. Thread Sealant

sac shellac sealant thread

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16 replies to this topic

#1 Guest_Ray Cornett_*

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Posted 26 March 2014 - 03:11

Is there a true difference?



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#2 FarmBoy

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Posted 26 March 2014 - 03:58

Yes
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#3 redbike

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Posted 26 March 2014 - 10:07

I know Ron Zorn has addressed this in this forum.



#4 Paul80

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Posted 26 March 2014 - 10:10

In a pen servicing application, One is a glue and one is a sealant.

 

Although if used in its woodworking application then one is a sealant and one makes a mess ;)

 

Paul


Edited by Paul80, 26 March 2014 - 10:11.


#5 Guest_Ray Cornett_*

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Posted 26 March 2014 - 10:16

Has it ever been mentioned what is in the shellac used for sacs? Is it the same as the shellac used for wood finishing?



#6 white_lotus

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Posted 26 March 2014 - 11:17

Yes. You can also order from Kremer Pigments shellac flakes, varying shades, and dissolve it yourself. That way you can guarantee it's freshness. Here's a link:

 

http://shop.kremerpi...e27483a1b6886c3


Edited by white_lotus, 26 March 2014 - 11:26.


#7 Ron Z

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Posted 26 March 2014 - 12:47

Has it ever been mentioned what is in the shellac used for sacs? Is it the same as the shellac used for wood finishing?


It is. If you're interested, there's a post about it on my blog (link to the blog below). Mix it yourself, or use flakes, it's still shellac with the same basic solvent - denatured alcohol. There are different grades and cuts of shellac, but after a couple of decades of repairing pens I've found (as did Sheaffer) that basic off-the-shelf Zinsser orange shellac works just fine.... and I do still have some of my first pens. Not many, but enough to know that it outlasts the sacs installed. :)


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#8 Sasha Royale

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Posted 26 March 2014 - 13:19

Yes.  One is used as "glue".  The other is not.  Get them wrong, and there will be "amusing"  catastrophe.

You will glue your pen shut.   :lticaptd:  Or you will leak ink all over your clothes and hands.   :lticaptd:

 

Seriouisly, think "Chapstik vs. Superglue".  Now, doesn't that bring a smile to your face ? 


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#9 OcalaFlGuy

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Posted 26 March 2014 - 16:51

Oh Lord. Now you've gone and done it Sasha.

 

How soon Now until someone asks which "Chapstick" makes the best section sealant?

 

 

 

 

:lticaptd:

Bruce in Ocala, Fl



#10 Ron Z

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Posted 26 March 2014 - 17:10

Oh Lord. Now you've gone and done it Sasha.

 

How soon Now until someone asks which "Chapstick" makes the best section sealant?

 

 

 

 

:lticaptd:

Bruce in Ocala, Fl

Well, let's see.  It's opaque (check), you have it around the house (check), it's slippery (check), easy to apply(check), repels water (does it repel water? maybe check) so it MUST be OK to use, right?     Oh, and it's hydroginated something or another.  Could be from a yak. 

 

(the preceding was brought to you for humorous illustrative purposes and is not intended to be taken as anything even remotely resembling repair advice)


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#11 Sasha Royale

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Posted 26 March 2014 - 17:50

Well, let's see.  It's opaque (check), you have it around the house (check), it's slippery (check), easy to apply(check), repels water (does it repel water? maybe check) so it MUST be OK to use, right?     Oh, and it's hydroginated something or another.  Could be from a yak. 

 

(the preceding was brought to you for humorous illustrative purposes and is not intended to be taken as anything even remotely resembling repair advice)

Okay.  Serious question.  A pen pal is sending me a 50 rupee eyedropper from India.  I don't have any silicone grease sealant.  

However, I have Chapstik (in four flavors) and (believe it or not) yak butter.  How imperative is the grease ?  


Auf freiem Grund mit freiem Volke stehn. 
Zum Augenblicke dürft ich sagen: 
Verweile doch, du bist so schön ! 


#12 FarmBoy

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Posted 26 March 2014 - 18:06

I now specialize in repairing pens that have been restored.

Use the cherry, the other flavors are less pleasing.
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#13 Ron Z

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Posted 27 March 2014 - 01:21

 How imperative is the grease ?


Are you using it to seal the threads on the pen? I don't use an eyedropper, but I understand that they do tend to ooze a bit so some kind of sealant would be an advantage. I wouldn't use silicone grease, though some do. Silicone grease is a lubricant and doesn't fill the threads at all. Any "sealing" that you get really is from the hydrophobic properties of the grease. I'd be more inclined to use some of the was from a toilet bowl flange ring or bees wax. It's a bit sticky, spreads evenly, fills the threads a bit and seals reasonably well. I wouldn't use my thread sealant because you want to take the section out regularly to fill the pen, and the rosin based thread sealant is really sticky. I mean really sticky.

Does anyone else remember the Muppet Show episode with Gilda Radner, Beaker and Bunsen and their glue? It feels like that sometimes if you aren't careful.

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#14 ttakacs

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Posted 27 March 2014 - 03:19

Would fly tying dubbing wax work as a thread sealant? I searched and found one reference on FPN to its use as a sealant because some older formulations contain beeswax.



#15 Ron Z

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Posted 27 March 2014 - 11:17

Addendum to the post above.....

Note that I'm suggesting this for use in an eyedropper pen where the pen has to be taken apart regularly to be filled, not for use in other applications such as sealing Parker 51s, Sheaffer Triumph nibs, Parker Vacumatic and Sheaffer open nib plunger filler pens etc. In cases like that where the section/nib unit is supposed to stay in place long term, a rosin based thread sealant is the best sealant to use, not a wax or grease.

Some folks will counter "But I want to be able to take my pen apart to clean it." Contrary to popular myth, disassembling a pen to get everything squeaky clean is not a good practice. It can lead to leaks and/or other damage. Most pens were put together to stay together and to be used. That vintage pens can be taken apart to be repaired when needed just happens to be a bonus.

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#16 framebaer

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Posted 27 March 2014 - 12:28

+1 to Ron. 

 

Even if you don't break something, constantly taking apart your pen to clean it is causing  wear to parts that weren't designed for that sort of constant opening, closing etc.   


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#17 Guest_Ray Cornett_*

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Posted 27 March 2014 - 13:19

I didn't know most of these replies were here. Useful information and a couple chuckles are good to see when I wake up and check in. Much appreciated. And yes rosin based is super sticky. I really did not expect it to be set so well in just 5-10 minutes after applying. I had an issue with a pen section coming loose easily when I would brainfart and twist the pull cap. So I put in a little of my rosin based sealant and fixed the issue. Only problem is I wasn't thinking ahead. It's a cartidge filler I use a converter in. Don't do pen repair or fixups when you're dead tired. You don't think right. Luckily it's an easy fix.


Edited by Ray Cornett, 27 March 2014 - 13:22.






Also tagged with one or more of these keywords: sac, shellac, sealant, thread



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