I picked up a Noodler's Ahab Flex Lapis Inferno at the local Artist and Craftsman. I like it quite a bit. Brian Goulet, in several of his videos, likes to draw a distinction between "soft" and "flex". This pen is interesting in that it is very firm, and you have to exert a bit of pressure to get it to flex, but it does flex quite a bit and you can lay down a very thick line.
I like the design, the feel of the body, and that it has an ebonite feed. It's a very nice pen, with features that normally cost a lot more. The person I purchased it from, and every video and description of it, says that you have to tinker with it, and that you'll get ink all over your fingers. I must have been lucky; it was set up perfectly when I got it, and I haven't had to make any adjustments so far.
It did have a somewhat unpleasant smell, from the vegetal resin. I stored it by some coffee grounds for a couple of weeks, and now it's fine.
To convert a Platinum Preppy to eyedropper, you put an o-ring on the nib housing, put silicon grease on the threads of the nib housing, fill the body with ink, and screw the nib housing into it.
My initial attempt at converting a Preppy met with mixed success, due to bad o-ring sizing. Don't use #5 o-rings, 1/16" thick, 1/4" inner diameter, and 3/8" outer diameter. They are NOT the right size. The ring bulged out, and I had a little bit of leakage while the pen sat.
Next I tried the o-rings from Goulet Pens, they fit much better. Per an answer there, they have a 7mm internal diameter, a 9mm outer diameter, and are 1mm thick. While this conversion went much better, and looked much better, I haven't had much of a chance to test it out because I've been distracted by other pens, not to mention various papers and inks.
|Bad O-ring Fraction||Bad O-ring Decimal||Good O-ring MM||Good O-ring Inches|
One last thing I'll mention, every howto I've seen or read says to use silicon grease, and to be careful not to overtighten because you can get cracks. Since then, I've read several references that indicate that silicon grease can cause cracking in some kinds of plastics. So next time I give it a try, I'm going to clean off the silicon grease and try vaseline instead.
I purchased a Jinhao x450 to use for modding. In particular, I wanted to try the Zebra Comic Sans G nib for some extreme flex. However, I ended up really liking the way it looks, I got the Red/Gold and it's quite attractive. I also like the way it writes, despite being a "medium" it lays down a very broad line, and very smoothly. So I'm leaving it as-is and inked up. The Ahab gives me enough flex for now, anyway.