Rendered at 23:44:41 GMT+0000 (Coordinated Universal Time) with Cloudflare Workers.
femto 7 minutes ago [-]
It would be interesting to augment the plotter with a Unimorph piezoelectric disk scanner [1], to enable finer movement so lines can be drawn closer together.
This is "old Internet" style fun territory (along the same lines as the Tom7 fun, if not quite as deep). I felt that the olive oil + fingerprint + phone screen was a really nice way to illustrate the core concept. Especially clever because it used something common and annoying to help describe how the plotter does its thing.
radarsat1 1 hours ago [-]
Before getting further into the article I thought maybe he was going to show how to use the plotter to control the oil smearing technique, which honestly would have been kind of cool.
TacticalCoder 4 hours ago [-]
There are very few TFAs I upvotes before opening TFA. But with such a title, this is one of them...
Something tells me you didn't open the posted link.
nomel 1 hours ago [-]
I guess I don't know how sharp a pick with an orange handle is from harbor freight, compared to a needle.
bradrn 3 hours ago [-]
In fact, I believe that the article is describing a reinvention of this technique! Just with a plotter on oil rather than a compass on plastic.
Sardtok 1 hours ago [-]
He did it on plastic CD cases, not oil. The oil in the beginning of the article was just for explaining the refraction that happens with the ridges in the structure.
[1] https://john-alexander42.github.io/simple-stm-web-page/Disk_...
Maybe could swap out the pen for a needle?