I have some Shellawax in my fridge, however, it may be 14 years past its use by date... can't remember when I last used it. After that, I used to sand timber blanks to 2,000G and finish off with EEE and Glow
Contrary to seasoned pen turners, I now use 20 layers of CA. After that I treat it like I would a turned acrylic... first sand is at 400G and 600G, then I go up through the acrylic micro mesh sanding pads and finish with this buffing compound, That's how I get a durable glass type finish (though pictures don't give it credit) that back in my heyday, my daughter used to confidently add $10-$20 to selling price... and bloody well get it... I used to get the bird (not the duck type).
I would recommend hitting Mokey for finishing advice... he's been turning pens before he was born.
If your first cut is too short... Take the second cut from the longer end... LBD