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How I Made A Ed Pen From A Cracked Barrel Wing Sung 992 Fp

cracked barrel wing sung 992 eyedropper

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5 replies to this topic

#1 jobodine

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Posted 30 March 2018 - 23:01

I bought a few Wing Sung 992 demonstrator  FPs a few months ago and found out they all suffered from cracked-barrel syndroms  ( See Photo 1) !! Functionally , these cracks do not cause any problems in writing at all but for collectors  they are really  eye sores which defame the good name of Jinhao brand  ! Anyhow,  I decided to change one of them into an EyeDropper pen and here  is the way I did it :

 

1) Fill  the barrel with water-proof GE Silicon Caulking ( transparent type, see Photo_02) about ¼ inch above the level of the crack .

 

2) To carry out this operation ,  I  fill a ¼  inch. diamter drinking straw ( around 6 inches long) with  GE Silicon Caulking  up to about 3 inches in height (See Photo_03)  .  Then I insert this  straw inside the pen barrel and transfer the caulking to the bottom with a 3/8 inch diameter wooden round stick (Photo_04)  , making sure that the caulking is at least 1/4  inch  above the crack . Care should be exercised to avoid any caulking sticking to the side of the barrel .

 

3) Let the caulking harden for at least 24 hours before filling with ink (see   Photo_05)  . Photo_06 shows a close-up of the Silicon caulking filled up to 1/4 inch  above the crack .

 

4) I also used Silicon grease  on the thread portion of the grip section to ensure that  no ink leaking may occur  at the section & barrel connection  .

 

 

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Photo_01

 

 

 

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Photo_02

 

 

 

 

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Photo_03

 

 

 

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Photo_04

 

 

 

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Photo_05

 

 

 

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Photo_06


Edited by jobodine, 31 March 2018 - 00:22.


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#2 holgalee

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Posted 31 March 2018 - 03:25

It looks great and that's one excellent way to apply silicone caulking that I never would have thought of. Any ideas if ink will stain the silicone?

#3 old4570

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Posted 31 March 2018 - 04:13

It looks great and that's one excellent way to apply silicone caulking that I never would have thought of. Any ideas if ink will stain the silicone?

 

 If it did , might make for some funky patterns ...

My 992 is too severely damaged to ED , but I did order another . ( hopefully gets here undamaged - fingers crossed ) 

The plug on the end of the barrel , I might try melting it in place ...  ( hmmm - playing with fire )  I have a small micro torch ( jet ) 

With these pens so fragile , has anyone tried boiling the barrel to stress relive it ? 

 

  Long long time ago , we used to boil nylon props to stop them from throwing a blade because they were brittle ... 

I might try that as well ...  ( Next 992 ) 



#4 jobodine

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Posted 31 March 2018 - 15:07

.... Any ideas if ink will stain the silicone?

 

After 24 hours, the Silicon caulking hardens and becomes  100 %   waterproof  and no staining whatsoever !



#5 jobodine

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Posted 31 March 2018 - 15:15

 

 

Depending on the extent of the crack , the plugging solution may not work . I would not try the heat solution as you have little control of the heat effects on hard plastic . I wonder also about the distortion effects on the barrel end ....Remember you can glue in the end plug but ink may still leak through the crack . As I can see it, the Silicon solution is a surefire way to have a good Eyedropper FP .



#6 old4570

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Posted 31 March 2018 - 22:56

Will see what happens ..

I am now confused as to what the Ebay seller is going to do , send a replacement barrel or new pen ?  

Anyway I ordered another 992 ..  

 

 What I might do is take the damaged barrel I have and melt the plug in place .. My micro torch is accurate enough to just melt the plug . ( Practice ) 

I am not too worried about a $2 pen , worst case scenario I end up with some spare parts .  

Will not try to ED this one , but it might be good for experimenting .  ( Melting ) 

 

 + I will try stress rel-leaving by boiling the barrel , the water should not be hot enough to damage or distort the barrel ( one hopes )  


Edited by old4570, 31 March 2018 - 23:00.






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