Warren Nerraw wrote:A word of caution regarding sandblasting, depending on the sandblaster size and experience level of the operator, a flat piece of sheet metal can be made into a "Pringle" shaped disaster due to the heat(friction) involved produced by the air pressure/volume of sand. Proceed with caution. I'd use a scraper to get the heavy stuff off and follow up with a coarse Scotch Brite Pad. Maybe soak it in a Coke bath for a day.
Benjamin Bouchard wrote:Before doing ANYTHING to it, post up some pics if you can! I study American scythes and would love to see yours, but also it would be good to assess its condition and whether it's worth restoring. For removal of heavy rust I suggest electrolysis. It's very easy to do at home and there are tons of how-to's on the internet about it. Not abrasive, and no risk of destroying the heat treatment.
Even more importantly is what condition is the snath (handle) in? More things tend to go wrong with snaths than do with blades.
Rufus Laggren wrote:A gentle way to remove rust (any kind): Let it sit in white vinegar for a day or five. Check each day. But an oil film will prevent the vinegar from acting so you must clean the surface first. Dish detergent combined with scrubbing with a steel brush will work; so will brake cleaner (read the safety warnings).
When you are happy with the rust removal you have to IMMEDIATELY rinse, dry and paint the surface. The rust starts the instant you remove it from the bath. Have your paint setup ready to go; if you have a hair dryer handy that's often the fastest way to dry a part for painting. Keep you fingers off the part to be painted - your finger oils will mess up the paint adhesion.
Casey Shobe wrote:
You can also use a baking soda solution to neutralize the lingering acidity, which is what encourages the rust. Then oil.