GB, I would be curious how that Jennolite material compares as well as some real world feedback on how well it works. It sounds like different process than OSPHO and probably far less dangerous/toxic but the question is how EFFECTIVE it is.
*eek*I am NOT saying one product fits all
There is other products here in the US, some of which I have used, some not. RUSTMORT seems very popular with some people, there was another we called Kitty Hairs but I cant recall the brand name, but it was an infused fiberglass matt and jelly with rust converters and its used for heavily corroded and swiss cheese body panels on cars and trucks. It hardens into a smooth sandable resin type material that also prevents further Iron Oxide/Rust.
Naval Jelly is one I have used a lot, and I have been experimenting with a variety of rust eating jelly/oils that are citrus based and many down at the ship yards are using it as it can drop right into the harbor waters and no environmental harm or flush it down your sink. So far it appears they do eat rust off of parts but mixed results.
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As to Dutch,, yes, you are correct on the electro process, you can REMOVE or ADD metal based on current flow and polarity. Thats basically zinc, cad or Nickel plating in a nutshell if you use a sacrificial anode as it transfers the metal off the anode and deposits it onto the part. Or reverse it.
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I will be looking for a new vendor next weekend, (We have the Western US's largest auto jumble in town, approx 5000 vendor booths, 2 facilities adjacent to each other) but we used to have a sprayable filler guy locally and his methods were quite promising and interesting but the problem was his prices were insanely high and he appeared to be mentally deranged and unstable. 20 years ago talked to a few who used him, and nothing since, It was on my list to give him a sacrificial part as a test piece and never got around to it.
BUT,,, here is how it works:
Basically like a liquid sand blaster but the media was liquified mix of Alloys kind of like spray foam insulation only this stuff was hard as steel and went from a thick slurry liquid to hard and cured metal.
If you had a badly corroded body panel, holed tank, or other cancer stricken metal you sprayed this on and then took a grinder and body sanders and finished it into shape. It bonded so tight to the parent metal it became one like powder coat paint only more like welding.
For some cars,, this had a lot of promise, but less so on a motorcycle.
Here is the original companies website:
http://www.rustbustersllc.com/www.rustbustersllc.com/rustbustervoicetrack.htmlHere is a slightly more coherent version in a Farm newsletter:
https://www.farmshow.com/a_article.php?aid=14550"Rust Buster" Spray Welder Fills Big Holes In Sheet Metal
Do you have an old pickup that runs great but has a body full of big rusty holes?
Rodney and Garry Rose think they can help. It took 20 years to perfect their wire-feed "rustbuster" Spray Welder, which fills big gaps in sheet metal by spraying molten zinc into the rusted-out holes.
"You can repair auto bodies, augers, metal siding, or any other metal that's rusted or corroded," says Rodney, who operates a sand-blasting business in Portland, Oregon in addition to staying busy manufacturing and promoting his spray welder. Garry has a similar business in Salt Lake City, Utah.
"We started with this idea in 1978 and finally had a machine that worked the way we wanted in 1998," Rodney says.
To fill a hole, you first sandblast the area to be repaired. "All the rust or corrosion must be removed for best results," he says. Then you use the spray welder to rebuild the piece, filling in any holes and smoothing over pits. The spray welder actually melts zinc wire and sprays it over the surface.
Once the surface has been restored by this process, it has about the same feel as 30-grit sandpaper. Once he's rebuilt a piece, Rose applies a primer on the surface and then smoothes it with a block sander. "Once that's done, it's ready to finish," he says.
Besides being useful for auto body work and siding repair, Rose says it can be used to rebuild steel handrails, rusted pipe gates, or in restoring antique tractors and farm machinery.
To demonstrate the machine locally, Rose completely refinished a 1975 MG Midget sports car. Both rear quarter panels were nearly gone because of rust before Rose used his spray welder on it. Now it looks like new. "I sanded it down and put a clear coat on the surface, so it looks like a galvanized car now," he says.
The Rose brothers call their company Rustbusters. They sell the Spray Welder as part of a package that includes the Rustbuster name, the machine, training needed to operate it, and, importantly, rights to a protected territory in which to use it. They will bring the spray welder to you and give you on-site training in its use, all for a total of $25,000. If you go to Portland, Oregon, for training at the Rustbuster factory, you can get set up for $20,000. So far, they have assigned nearly 20 protected territories, mostly in the West and Midwest.
Contact: FARM SHOW Followup, Rustbusters, P.O. Box 341, Clackamas, Ore. 97015 (ph 800 600-3203; Email: info@rustbusters.com; Website: rustbusters.com).
