Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Shop Equipment Tools and Techniques > Machine Shop and Tool Talk
Forgot Password? Join Us!

Notices

Machine Shop and Tool Talk Shop Equipment, fabrication, repairs, how to fix it, which tool to use for the job. Machinist shop talk, straight to the point.

Machine Shop and Tool Talk

electrolytic rust removal and preservation


this thread has 2 replies and has been viewed 4657 times

Reply
 
Thread Tools Display Modes
  #1  
Old 07-13-2003, 09:10:36 AM
George Andreasen
Guest
 
Posts: n/a
Default electrolytic rust removal and preservation

So you just pulled your precious part out of the electrolytic bath and it's clean...now what? Here's my two cents worth: I check my parts at regular intervals and remove them when I'm satisfied with the results. For some reason the treatment seems to remove almost all old paint, which is a great bonus. Now if I simply toss the part on the bench and go to another project, I can be assured of a fresh coating of rust within hours..sometimes minutes. Remove the part and rub briskly with an old terry cloth towel or some other rough cloth. This takes off any remaining paint, gunk etc. Use compressed air to blow out any holes or crevices. Immediately flood the part with good 'ol WD40. Since WD40 is a "polarized" oil, it will get under the water and lift it from the surface (which is why it "dries" wet ignition points). This will prevent surface rusting for a long time. You mean I should paint over the oil?? No. Get a large bottle of the CHEAPEST rubbing alcohol that you can find. Soak a CLEAN cloth rag with it and thoroughly wipe any surface you intend to paint. The iron or steel will be super clean,take your primer and hold like it should. This is the most effective method I have found and is based on many years of being cheap...after all, those metal preparation chemicals cost money! Best to all, George
Reply With Quote
Sponsored Links
  #2  
Old 07-13-2003, 09:28:56 AM
Orrin Iseminger
Guest
 
Posts: n/a
Default Re: electrolytic rust removal and preservation

I always treat my electo-cleaned parts with one of the metal prep products. They are a mix of phosphoric acid and metal salts. This treatment chemically converts the remnants of rust into iron phosphate and produces a rust-resistant surface.

The brand I use is Ospho. Jasco makes a product called "Metal Prep" and it like it better, but we cannot get it around here. Just go to your paint shop or hardware store and see what they have to offer.

DO NOT use phosphoric acid as a substitute. It actually causes severe rusting.

The directions on the Ospho bottle says that the product can be used as a primer; paint right over it.

It takes a bit of experience to use Ospho. Its action on cast iron is very vigorous. Sometimes, I'll paint the stuff on and immediately wipe off the excess with a lint-free paper shop towel.

On steel parts, I'll let the Ospho work for a few minutes, then blow off the excess with shop air. Be sure to wear goggles and a face shield. The blast of air can spray the stuff off into unexpected directions.

I have a large inventory of electro-cleaned parts around my place, waiting for a paint job. The metal treatment keeps them from re-rusting.

Orrin
Reply With Quote
  #3  
Old 07-13-2003, 09:50:50 AM
George Andreasen
Guest
 
Posts: n/a
Default Re: electrolytic rust removal and preservation

Orrin, Your right about Metal Prep..I used it years ago and it's effective. Like you I just can't find it around here. There is a trick with it that I learned from a body shop man years ago. If you have a large smooth surface that's rusted(like a fender) soak a towel or large cloth in the Metal Prep and just lay it over the surface. Keep it wet and lift occasionally. You will find the rust is removed and transferred to the cloth, leaving a clean surface.

I still have and use my pressure sand blaster. It's a very good tool for badly rusted items, but the "bath method" sure beats all that set up time! George
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Rust Removal / Paint Preservation? oldmotorette Paint Shop 3 01-13-2018 12:04:34 AM
Electrolytic Rust Removal (Electrolysis) Jim Alexander Hit & Miss Gas Engine Discussion 8 03-27-2017 08:14:36 AM
Electrolytic rust removal from hopper AnthonyR1969 Hit & Miss Gas Engine Discussion 24 03-14-2014 10:31:02 PM
Evapo-Rust rust removal process. NAMPeters Hit & Miss Gas Engine Discussion 15 12-07-2009 03:40:10 PM
HELP WITH ELECTROLYTIC RUST REMOVAL Aaron Abey Antique Engine Archives 4 08-08-2003 10:34:27 AM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 12:53:35 PM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277