So I am getting what appears to be areas where grease was not properly removed from the aluminum and was hoping someone can't spot my problem area.
Each primer prep session goes something like this
1. Scuff parts using a maroon scotchbrite pad in a tub filled with warm water and Dawn dish soap.
2. Rinse parts and wipe them with a wet rag in a second tub filled with clean water.
3. While wearing nitrile non-powder coated gloves move parts from tub #2 to a third tub of clean water for a final rinse
4. Set parts aside to dry
5. Move parts into the paint booth (also while wearing nitrile gloves) and wipe with denatured alcohol and a clean lint free rag
6. Spray prime with SW Wash Primer or Alodine 1132 pen
7. Dry in the paint booth
For each skin sized piece of aluminum and especially on the interior corners of the ribs, the primer is beading like the aluminum hasn't been cleaned / degreased. All the parts are thoroughly scuffed which tells me I am getting those corners with the dish soap and I can't see any water breaks during the 3rd and final rinse, but I worry that it just isn't cutting the grease. The spots aren't real bad as it seems more cosmetic (the parts are holding the primer but it doesn't appear real uniform). I do however want to figure out the issue before I get to paint since the interior primer cosmetic issues don't matter, but the exterior paint will.
Does anyone see something glaring that I am doing wrong here, or have a better recommendation for a grease cutting agent than Dawn dish soap?
Each primer prep session goes something like this
1. Scuff parts using a maroon scotchbrite pad in a tub filled with warm water and Dawn dish soap.
2. Rinse parts and wipe them with a wet rag in a second tub filled with clean water.
3. While wearing nitrile non-powder coated gloves move parts from tub #2 to a third tub of clean water for a final rinse
4. Set parts aside to dry
5. Move parts into the paint booth (also while wearing nitrile gloves) and wipe with denatured alcohol and a clean lint free rag
6. Spray prime with SW Wash Primer or Alodine 1132 pen
7. Dry in the paint booth
For each skin sized piece of aluminum and especially on the interior corners of the ribs, the primer is beading like the aluminum hasn't been cleaned / degreased. All the parts are thoroughly scuffed which tells me I am getting those corners with the dish soap and I can't see any water breaks during the 3rd and final rinse, but I worry that it just isn't cutting the grease. The spots aren't real bad as it seems more cosmetic (the parts are holding the primer but it doesn't appear real uniform). I do however want to figure out the issue before I get to paint since the interior primer cosmetic issues don't matter, but the exterior paint will.
Does anyone see something glaring that I am doing wrong here, or have a better recommendation for a grease cutting agent than Dawn dish soap?
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