Soda blasting
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(→Kirker) |
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===Kirker=== | ===Kirker=== | ||
| − | Reprinted verbatim with permission: | + | The use of soda blasting does not specifically void any warranty that Kirker may offer, but they do indeed discourage its use as a prep step. Reprinted verbatim with permission: |
<blockquote> | <blockquote> | ||
| − | ''Kirker does not encourage the practice of using sodium bicarbonate as a means of preparing a surface for refinish work, especially when we’re talking to the non-professional refinisher, which is probably how the majority of your readers would describe themselves. | + | ''Kirker does not encourage the practice of using sodium bicarbonate as a means of preparing a surface for refinish work, especially when we’re talking to the non-professional refinisher, which is probably how the majority of your readers would describe themselves. |
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Sodium bicarbonate is a very reactive material. Therefore, it is imperative to remove all residue before applying any coating over the blasted surface. Should any trace residue remain on the vehicle (most typically this occurs in seams, along trim molding, etc.), there is a good chance it could react with the coating which results in several product performance issues, the most common being delamination. More specifically, the sodium bicarbonate reacts with acids and/or other materials in the coating, which creates a source for carbon dioxide. As the CO2 gasses out from beneath the forming film, it can cause blisters in the surface which potentially give way to more serious delamination issues. | Sodium bicarbonate is a very reactive material. Therefore, it is imperative to remove all residue before applying any coating over the blasted surface. Should any trace residue remain on the vehicle (most typically this occurs in seams, along trim molding, etc.), there is a good chance it could react with the coating which results in several product performance issues, the most common being delamination. More specifically, the sodium bicarbonate reacts with acids and/or other materials in the coating, which creates a source for carbon dioxide. As the CO2 gasses out from beneath the forming film, it can cause blisters in the surface which potentially give way to more serious delamination issues. | ||
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For removing existing finishes to prepare for refinish work, there are better options than soda including organic media like walnut shells and corn cob or more aggressive abrasives like polyester bead. All of this considered, soda blasting can be done correctly with very good results, however we feel that is outweighed by the extra prep steps required and greater potential for delamination issues.'' | For removing existing finishes to prepare for refinish work, there are better options than soda including organic media like walnut shells and corn cob or more aggressive abrasives like polyester bead. All of this considered, soda blasting can be done correctly with very good results, however we feel that is outweighed by the extra prep steps required and greater potential for delamination issues.'' | ||
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