Stage four - applying a top coat
The tin says that melamine fully cures over a period of 7 days, however I can assure you that the moment you finish the last coat it is more than dry enough to take to the pen press. Normally though, I like to give my pens what I call a top coat, so that the melamine is protected during the curing process and to help keep fingerprints off in the short term. Once it has a top coat to protect it, I am more than happy to send the pen out in the post. The customer is not going to be in a position to handle it for at least 24 hours, by which time I can assure you, everything is more than adequately cured. The top coat will wear off over time, but if you choose one that is fit for purpose, that period is quite long, by which time the underlying melamine is cured and bomb-proof.
I have only ever found two products that are suitable for this, one being
microcrystalline wax and the other being
carnauba wax. There are a whole host of wax products out there that will add to the shine, but adding to the shine is not the purpose of this process. In any case, I cannot think of one of them, apart from the two I’ve mentioned, that will not wear off very, very easily and quickly, including friction polish, which apart from furniture polish, is possibly the least suitable finish for a pen I can think of, as it will wear off within minutes of being handled.
My choice is
Chestnut Carnauba Wax Stick, principally because I don’t have 20 minutes to wait for microcrystalline to dry. If you use carnauba, make sure it is pure carnauba in a stick form - don’t get fooled into buying a so called turners stick, which whilst it’s carnauba, it also has beeswax mixed in and is therefore too soft. Carnauba has nothing to do with bees, it is made from the leaves of a Brazilian palm tree called Copernica Ceriferahe. It also happens to be the main constituent in the best quality motor industry trade polishes, and the motor industry knows a thing or two about finishes. They don’t use beeswax, or friction polish - or CA for that matter.
After inspecting my final coat of melamine, I usually leave my lathe running to help air dry the melamine while I go and prepare the pen kit and get everything ready for pressing. By the time all the bits are out of their annoying little bags and the bench is ready for action, and I’ve had a few sips of my cuppa, a couple of minutes have passed which is enough time for the melamine to have hardened sufficiently to take wax from a stick.
Crank up your lathe to its highest speed. Mine runs at about 3600 RPM but anything over about 2400 RPM will be enough. It is friction that melts the wax onto the surface of the melamine, so too slow and you won’t get enough friction. Hold the stick onto the surface and pass it along the length of the wood, just once. Make sure you get a complete covering. If you’re not sure, another pass won’t hurt, but don’t overdo it or you will get such a thick build up of wax it will take for ever to polish it up. Make a new rubber and use it to polish off the excess wax and burnish it up - which can be done straight away, there is no drying time required. Keep turning the rubber and keep polishing until you can no longer see movement in the surface of the wax. It’s helpful to position your head so that you can see the light being reflected off the wax, to see how much more work you have to do. Applying and polishing up the top coat takes almost as long as applying four coats of melamine, but don’t skimp, stay with it, and you’ll be rewarded for your efforts. It may add to the overall shine, however if you’ve got the melamine process right, it won’t add a lot, but it will give it that showroom finish and protection.
The job is done - and no, you still don’t need to put it on the buffer!!