Saturday, June 16, 2012
Weaver's Delight - Vinegar Soak
I needed something long enough to submerge them, and found that an old toilet tank cover was just the right size. Vinegar is definitely the cheapest way to get rust off of metal, but the rust also comes back pretty quickly.
While researching using vinegar, some cautions were mentioned. First, don't use it on aluminum. I didn't realize that the brackets were a mix of metals, one of which was aluminum. The aluminum very quickly turned powdery white after the parts were dried, and the other metal quickly got a thin film of rust.
The second caution was to neutralize the vinegar with baking soda in water. I used that for my final rinse before drying.
I still had to brush them a little bit before painting. The aluminum part of the brackets also needed sanding with fine black sandpaper to try and remove the white film.
After drying, get the parts painted right away, or if they aren't going be painted, get some light machine oil on them to inhibit the rust.
We think this loom had someone start working on it, because some of the bolts that should have been identical are different lengths, many washers are either missing, or the wrong size, and three of the four identical brackets on the right side of the photo are cast aluminum, and one is cast iron. I'm not sure which was originally on the loom.