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

[jobodine]

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 .

 

 

Photo_01

 

 

 

Photo_02

 

 

 

 

Photo_03

 

 

 

Photo_04

 

 

 

Photo_05

 

 

 

Photo_06

Edited March 31, 2018 by jobodine

[holgalee]

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?

[old4570]

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 )

[jobodine]

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

 

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

[jobodine]

 

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 .

[old4570]

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 March 31, 2018 by old4570