Tag Archives: illustration

His nibs.

I started using a Wacom Intuos 2 tablet in 1999 after struggling with a mouse-induced repetitive stress injury. I’ve been holding the same stylus pretty much every day, for hours a day, for the last twelve years.

Over time, the nibs eventually wear out, and I’m left wondering where I left that tiny bag of replacement nibs I bought from Wacom three years ago to replace the tiny bag of replacement nibs I lost six years ago.

Now I have a Replicator, and I can print my own highly precise pieces of plastic. I’m a big believer in Taking It Just A Little Too Far, so I’ve designed a nib based on the slicing end of a Shaolin spade.

The Shaolin spade (月牙铲, or yuèyáchǎn for my fellow xuésheng) was the favored weapon of drunken monk Lu Zhishen, made famous to those without an interest in classical Chinese literature by Max Brooks’ Zombie Survival Guide and the fine Kurt Russell vehicle Big Trouble in Little China.

The nib should work for any Wacom stylus. Here it’s pictured in my Bamboo, which I use for work when I’m traveling.

My original plan was to include the Shaolin spade in the Zheng3 Cocktail Arsenal, but the tip is too wide to be thrusting through maraschino cherries. It should make a dandy calligraphic nib for those so inclined.

If you’re the kind of person who cares enough about the quality of a digital brush stroke to 3D print custom nibs for a Wacom tablet, you deserve a step-by-step tutorial on how to do it.

This is a really precise, but very simple print. The nib’s shaft needs to be sized so that it fits the bore of the Wacom pen and can be removed with the tiniest effort, but not so loose that it falls out when one begins to draw with the stylus.

I did a lot of trial and error to get the nib diameter correct, because my four-dollar hardware store calipers produced a measurement that was way, way too thick to fit into the pen. A radius of .065 cm seems to do it when printing with the following method. I’m assuming there’s some contraction/expansion/plastic real-world-weirdness that doesn’t show up when the design isn’t all vertices and electrons.

Note that I’m printing with PLA.

ReplicatorG Settings:
HBP: 45° C
100% infill
Layer Height: .2
Number of shells: 1
Feedrate: 25 mm/sec
Travel Feedrate: 55

This print is so small and delicate that any extruder-induced jiggling of the Replicator is likely to shift the plastic off your platform. I got good results by slowing the print heads down. Here’s how I did it:

Generate your gCode from within ReplicatorG using the above settings. Then do a couple of find/replaces in your favorite text editor:

Replace F750.0 with F100.0
also replace F1500.0 with F100.0

There’s probably a way to do this from the GUI but for some reason I’m more comfortable mucking around in the ASCII.

Run the print. Your instinct will be to pull that new nib off the build platform and jam it into your stylus ASAP. Don’t. Give it a few minutes to cool so it doesn’t warp upon removal.

It’s easy to remove a fresh nib from a Wacom stylus. Just grab it with some pliers and pull gently. Scissors are useful for removing a worn nib; cut slightly into the plastic of the nib with the blades and then pull it out.

Download it here.