I can confirm this. Sand blasting will leave contaminants and is very invasive to the surface and if you aren't careful you could blow a hole right through the metal. Other types of media blasting are much easier on the surface and I think one that is used commonly is actually baking soda. These are also easier on the environment and you really need to wear a quality respirator as opposed to the little doctor-type masks. You may also need a metal-prep cleaner before spraying on any paint or a metal-etching primer depending on how detailed you want to get. Consider what type of paint to use as some will become sticky in the heat and could cause the flapper door to stick. Depending on what type of metal the flapper door is made of you could be really anal and consider powder coating. Greg -----Original Message----- From: Walter Coe [mailto:Whalt@xxxxxxx] Sent: Friday, September 13, 2002 11:36 PM To: DMCForum Subject: [DMCForum] sand blasting vs bead blasting I want to clean the rust off of the flapper door in my a/c housing and paint them. I understand that there are some disadvantages to sand blasting such as that it will impregnate the surface with some contaminate that may promote rust. So for this reason bead blasting is preferred. Can anyone confirm or deny this urban legend? Walt To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/MVfIAA/HliolB/TM ---------------------------------------------------------------------~-> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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