Desk note
A cap that stays on.
· the counter
January nights on this block commonly fall into the teens Fahrenheit. People arrive with a pen that will not start and a bottle that spent the night in the door of a car parked on Clinton. Dye ink freezes. Pigment ink freezes. Iron gall freezes. The bottle does not usually crack at those temperatures if it was not filled to the glass brim, but thawing is not the same thing as mixing the ink back to what it was when it left the cupboard.
Yesterday’s bottle was a 30 ml blue-black dye, cap crusted with road salt at the shoulder, not at the threads. We set it upright on the back counter, away from the radiator, and we did not open it. The glass sweated within minutes. That sweat is the shop’s air, condensing on a cold surface. It looks like the bottle is leaking. It is not. If the cap comes off while the sweat is running, water crosses the threads and enters the ink. A diluted dye writes pale. A diluted iron gall writes pale and then darkens in blotches, and the cotton is blamed for a fault the water introduced. Pigment that takes on meltwater settles stranger than it should, and rolling the bottle no longer brings it back to the line you bought.
Thaw is slower than an errand. A 30 ml bottle that sat near 10°F overnight is often still slush at the core after an hour in a room at ordinary shop temperature. We ask people to leave it if they will be back the same week, or to take it home and wait until the bottle matches the room and the outside of the glass is dry. Then invert a dye ink slowly, twice. Shaking pulls air through it. The fill foams, and the first strokes from the pen spit. A pigment bottle can be rolled, because the carbon settles, but it still should not be shaken hard. Iron gall gets the same patience and no extra water. If the color after a proper thaw is wrong on a dry scrap of unbuffered cotton, the bottle is done. We do not “refresh” it with a spoon of new ink. That is how a second bottle gets contaminated.
The paper in the same week is a separate object, and it confuses the diagnosis. The furnace is running. A sheet that was content at a moderate humidity goes crisp. Ink that feathered on a damp March afternoon may draw a hard edge in January on the same weight. Customers who froze a bottle and also changed rooms often report both faults at once: a pale first line, then a line “sharper than before.” The pale line is the water or the unsettled freeze. The sharp line is the dry sheet. We keep a dry scrap and, if the month has been wet, a scrap that has sat nearer the door, so the comparison is visible. The furnace side of this is written out in The furnace and a sharper line. The March side is A damp sheet in March.
A pen that froze with ink still in the feed is not a bottle problem. We do not repair pens. We will look at the nib under the lamp and say whether the slit has opened. After that, the feed is the owner’s work: water, patience, no solvent from a kitchen. We will not fill a suspect pen from a shop bottle to “see if it is the ink.” That is how the cupboard loses a bottle that was fine.
If you are driving down from the north side or in from a lot that sits open all night, bring the bottle inside the coat, not in the trunk, once the forecast is a hard freeze. The paper can ride in the wrap. The ink should not ride at the temperature of the street. Weights, and which sheet is unbuffered for iron gall, are on the cotton page. The four bottles we actually sell are on the ink page.