When I degrease, I use a 50/50 mixture of Purple Degreaser and Simple Green. I spray the mixture onto the mule using either a 1 or 2 gallon garden sprayer. I allow the degreaser to work a bit and then pressure wash. Depending on how tought the grease/dirt mixture is, I may need to to this 3 or 4 times to get the mule squeaky clean.
Years ago, when we statred restoring mules, I was using a local sand blaster who was using a finer grit media in his blasting eqipment. This media was providing us with a good finish on the mules. Then my sand blaster changed to a rougher grit media and the blasting was leaving a rough texture on the mule deck. So, I had the blaster to start soda blasting the mules. While it cost a bit more, the sode leaves the mule with a smooth finish.
As chuck said, after blowing out the blasting media, I usually wipe the mule down with Lacquer Thinner.
Here is the info on the Zinc Chromate Primer that I use. If you search here on the G, you will see meany pictures of mules where I have used this primer on the base metal.
- The yellow Zinc Chromate Primer is a 2 part (the main primer and the activator).
- The mixture is a 1 to 1 mixture.
- Once mixed it must be used or it sets up. Only mix what you need.
- No thinning necessary.
- Use only a light coat, do not use a heavy coat.
- I have used it on steel and aluminum.
- Apply any good body filler on top of the zinc Chromate primer. the filler actually adheres to the primer better than it does to the bare metal.
The primer is made by Matthews Paint Company, Pleasant Prairie, Michigan, 53158. Phone 262-947-0700
For the gallon cans =
Part 1 is called the "Undercoat, Part # 74 734SP, Metal Pretreatment"
Part 2 is called the "Catalyst, Part # 74 735SP, Activator"
Try this URL for info - http://www.ppg.com/COATINGS/MATTHEWSPAI ... fault.aspx
I believe any Auto paint store which carries the PPG brand of paint can get the Matthews Primer. I purchaed my Zinc Chromate primer from a local independent auto paint store here in town.
To the best of my knowledge, none of the 15 or so of the mules I have painted this way have ever had the paint flake off.
Hope this helps.
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