I recently purchased a couple of Chinese-made fountain pens (https://www.amazon.com/dp/B0C1SQXWVZ). They have a fine, 0.38mm nib, which is very smooth to write with. However, the pens themselves leave a lot to be desired. They are made from cheap plastic, look cheap, and feel cheap. The pen is much too light for my big hands. These pens are refillable (not cartridge-based) and have an ink reservoir that is integral to the nib body (see below).
So the question is, are these nibs interchangeable with those that come in kits for pen turning? I would like to have pen bodies from a more dense wood (like wenge, cocobolo, goncalo alves), and would like to use these nibs instead of those supplied with a kit.
Or would I be better off drilling and tapping my own adapter insert?

So the question is, are these nibs interchangeable with those that come in kits for pen turning? I would like to have pen bodies from a more dense wood (like wenge, cocobolo, goncalo alves), and would like to use these nibs instead of those supplied with a kit.
Or would I be better off drilling and tapping my own adapter insert?

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