The JoWo #6 replacement feeds and housings are designed to improve the performance of your JoWo nib by increasing available ink flow and providing better regulation of the ink. These feeds have been tested with numerous versions of the JoWo #6 nibs, including EF, F, M, B, 1.1mm, and 1.5mm steel nibs, and also some 14k and 18k gold versions.
These replacement feeds/housings are available in three versions:
- J6E JoWo #6 feed and housing in black ebonite
- J6ER JoWo #6 feed and housing in red ebonite
- J6A JoWo #6 feed and housing in clear ebonite
This design, unlike the stock JoWo #6 assembly, is not keyed, so the nib can be positioned into the most pleasing position in your fountain pen.
A note on interference (friction) fit. The JoWo #6 nib assembly is held together with an interference fit. This means the diameter of the inside of the housing is smaller than the combined diameter of the nib sitting on the feed. This method of fit is required so the nib and feed don’t move in the housing while you write. The initial fit may be very tight, so tight that you may have difficulty getting the nib and feed fully inserted into the housing. If the fit is too tight for your finger strength, here are two ways to assist you getting the nib and feed fully inserted into the housing.
- Soak the feed and housing in warm, soapy water (dish soap works well) for a few minutes, and try again. Chances are the additional lubrication will allow you to fully seat the nib and feed into the housing.
- After you get the nib assembled into the housing, use your cartridge converter to flush the soapy water out of the nib assembly with clean water until all the soap is gone.
If the assembly is still too tight, then use this method.
- Soak the housing ONLY in hot water from your tap. You can use water up any temperature that your bare skin can allow, but don’t exceed 60C (140F). Allow the ebonite to soak for a few minutes. It will enlarge and soften slightly due to the hot water and make it easier to slide the nib and feed into the housing.
- Be careful and make sure not to burn yourself in the hot water. Insert the nib and feed into the housing and adjust as needed to align the feed and nib. Allow the assembly to cool to room temperature and it is now ready for writing.