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#1
November 1st 08, 09:40 AM
posted to rec.aviation.homebuilt
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Sandblasting Grit size?
is it reasonable to assume that if presented with a choice of grit
sizes (20.40.80), that 80 would be the finest? like sandpaper roughness - Mike 
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#2
November 1st 08, 10:42 AM
posted to rec.aviation.homebuilt
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Sandblasting Grit size?
On Sat, 01 Nov 2008 05:40:16 -0400, Michael Horowitz
wrote: is it reasonable to assume that if presented with a choice of grit sizes (20.40.80), that 80 would be the finest? like sandpaper roughness - Mike ballottini (glass beads) comes in a two letter designation. I used AH grade after some experimentation. it worked best on the steel tubes of the Auster. when bead blasting an aircraft component you need to take into account the fatigue characteristics of the resultant blasted surface. for this reason you need round particles not sharp grit. we have sandy soils over here in Perth. some of the most effective bead blasting media I used was fine round particle washed quartz sand just beside the neighbouring hangar. use the appropriate style of grit for aviation. Stealth Pilot
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