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#1
08-28-2024, 11:00 PM
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Grit rating on wlanut shells vs glass beads
So why are glass beads listed as 70 grit and softer walnut shells 24 grit?
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#2
08-28-2024, 11:55 PM
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Just the grit size, not the hardness. Rub both on some soft steel or aluminum. The glass is harder and will scratch the metal. Walnut shells are softer and won't scratch most metals, doesn't matter how big the particles.
Bigger walnut shell particles will be more aggressive than smaller, however...like a bigger hammer. So what any media does is a combination of both hardness and grit size. Here's a blurb that might help https://indigoblastingandpainting.co...sive-blasting/ |
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#3
08-29-2024, 09:52 AM
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Makes sense I always equate smaller number more aggressive at taking material off.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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#4
08-31-2024, 04:53 PM
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Organic versus Inorganic
Blasting material made from
organic material can vary in density which can produce varied results. That is where material selection and application can make a big difference. I would hire someone with experience and references. Jim
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