Bath time for the Wing Sung 601A fountain pen.

It has been over a year since I bought my first Wing Sung 601, a clear demonstrator, in June 2018. I swiftly bought another in Lake Blue. They have both been inked ever since. My review of this inexpensive Chinese pen can be found here: Another look at the Wing Sung 601 fountain pen.

In December 2018 I added a pair of Wing Sung 601A pens, which looked similar on the outside, but had a totally different, large tubular nib unit, rather like a Sheaffer Triumph and with a large, cut ebonite feed. Again, these arrived in simple cardboard packaging and with a container of silicone grease. However there was one more welcome extra – a tubular plastic hexagonal wrench for the filling mechanism. This also fits the 601, making it very simple to remove and re-grease the plunger or diaphragm unit, on either version.

Credit is due to the informative Youtube reviews of these pens, in Pen Talk by Chrisrap52. I learned that there are different types of filling mechanism, although both are operated in the same way by unscrewing a blind cap and pressing on a sprung metal rod a few times, whilst holding the pen with the nib immersed in ink. I gather that the older versions of the 601 (first generation) have a soft rubber bladder inside. These can be identified by a metal conical finial on the cap. The second generation (which I am looking at today) have a hard rubber plunger inside and are identified by a plastic jewel finial in the cap.

As it was high time my 601A’s had a bath, I took the opportunity to try out the wrench and disassemble the pens for a clean. The nib section unscrews easily enough and there is a black rubber o-ring to help prevent leaks. The threads are quite fine and on reassembling, it helps to begin by turning gently in the wrong direction, to correctly align the threads.

The tubular nib unit of the Wing Sung 601A.

The filling mechanism, accessed by removing the blind cap, is unscrewed with the wrench. One was quite stiff the first time. The unit is then withdrawn from the back of the barrel.

Plunger unit, removed by means of the supplied hexagonal wrench.

The Chinese instruction sheet supplied with the pen does not discuss removing the filling mechanism, (despite providing a wrench for this purpose) but recommends leaving the nib unit to soak in water for 12 hours if changing ink colour and then flushing it with running water until the water runs clear.

After removing the filling mechanism, I was a little worried that I could not see a spring anywhere and feared that I might have lost it. However there is no need to worry as it is hidden underneath the rubber plug. You can find it by separating the two plugs with your finger nail. Once screwed in place on the barrel, you can press the plunger rod and feel the resistance of the spring. It works very well and serves to fill the pen within a few presses. The first generation (diaphragm) needed more presses, maybe 10, not that this was any hardship.

Black plastic wrench for removing filling mechanism.

According to the instructions, you immerse the nib in the ink, press the button and release, fairly quickly, within a second, and repeat about 5 – 6 times. On the last press, you keep the button pressed down while you withdraw the pen from the ink; let go of the button and then eject about 5 – 8 drops. Presumably this clears excess ink from the feed so that the pen does not leak or write too wet straight after filling.

The instructions also recommend keeping the pen filled, to guard against leaks from temperature or pressure changes.

The pen holds a whopping 2ml of ink which, combined with its fine nib, makes for long intervals between fills. The push on cap, makes a good seal and I have had no problems of hard starts or skips, even after months of infrequent use.

This is a very enjoyable pen to use and to tinker with. It is satisfying to be able to disassemble and clean the pen so easily, now with a wrench that is made for the job and to spread a little grease on the threads and plunger. I must admit though, that I still prefer the look of the 601 with its hooded nib to the 601A, even though in use, it is more difficult to see exactly where the nib point is. I also found that mine benefited from a little nib smoothing with micromesh, to turn it into a super smooth, wet fine. It is hard to beat one of these pens, for value for money.

A pair of Wing Sung 601A’s. Lake Blue and Beige Grey.