My prior post inquired as to a cheap ink and paper that could be used to
test out my recently acquired barograph from an estate sale.

After some trial and error and with the group's help, I have managed to
get some accurate traces:

https://imgur.com/a/kKWKhQh

However, at least one issue still remains: the large ink spot you see
occurs within an hour of me refilling the tiny ink well on the device
arm. Once all that ink "hemorrhages", the trace then proceeds as you see
with no more spots. Any idea what could be causing this? Am I adding
too much ink each time?

One other thing I'd like to ask about is paper. For the chart, I had
printed them out on a piece of Georgia Pacific standard 20 lb weight
8.5x11 multipurpose paper and backed it with a couple of strips of
packing tape in the event a bleed-through occurred (and good thing I
did!). Suggestions for maybe a thicker paper I could try would be
welcome, with the idea to increase absorbency and still keep cost low.
In a pinch, I've been thinking of just doubling up the sheets I have
except the new thickness would not be uniform and glue would decrease
absorbency.

Thanks in advance.

JJ