I promise to make this the last post on honing/dressing a ruling pen before getting back to construction. My last video uploaded to YouTube covered how to hone a cheap ruling pen. I took some drastic action to get it into a working state, but what happens if you have a better quality pen to start with?
For years I have kept a lookout for old drawing instruments at boot fairs, antique fairs and online auction sites. Generally speaking the older instruments are usually of a finer quality and need to be dressed with a little more finese that I did in the YouTube video. As I wanted to be able to add closeup images I decided simple photographs would suffice along with some descriptive words.
My starting point for this exercise is an unbranded pen bought as a job lot. As is often the case it has no handle however the blades are in good condition and nice and thin:
I mentioned in the video that I have been known to make a new handle out of aluminium tube. In this instance I also needed a length of brass tube to act as a spacer. Both were cut to length:
5 minute epoxy has been used to glue the inner and outer handle together and to the pen:
Only 1200 grit wet and dry was used in the dressing process along with a good magnifier:
As in the video the blades were carefully reshaped:
Under magnification the tips look like this. The tip ends are a slightly different profile:
The tips are slightly different lengths. Some thinning of the blades can also be done:
Using 1200 grit wet and dry the first task was to get the tips to match so they are the same length:
and the same profile:
Working slowly and with constant reference to the magnifier I have refined the tips with the 1200 grit smoothing them off and thinning the edges:
With the pen prepared I could now try and see what it could achieve. It also managed to draw thinner lines but the pigment in the Humbrol Enamel could not be seen: