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| Knows too little about too much  |
I know some of you have probably done this. I need to bead blast a watch case to give a mat finish and remove some surface imperfections. I don't want it to shine, but be a dull gray stainless when I finish. My questions is what size beads should I use? Thanks, RMD TL Davis: “The Second Amendment is special, not because it protects guns, but because its violation signals a government with the intention to oppress its people…” Remember: After the first one, the rest are free. | ||
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| Oh stewardess, I speak jive.  |
I'm no expert but I've blasted a couple of dozen things over the years to get a matte finish on aluminum or stainless (guns, knives, and motorcycle parts), and I use 80-100 grit glass beads at 80-100 psi, in an inexpensive blasting cabinet a friend of mine has. Worked for me. | |||
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| The Constable |
I have seen relatively small cabinets at watch repair centers. The blaster head is very small, basically like the size of a marker pen. with a small nozzle , using very fine grit. I think a BB used for jewelry is a different animal, than the blast cabinets used to clean parts, etc. | |||
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Waiting for Hachiko |
Bare case...Even with glass beads, should you blast with the movement installed or crystal, there still is enough dust to possibly get inside. 美しい犬 | |||
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| Knows too little about too much |
Correct. The case is stripped - no movement, no crystal. Thanks, RMD TL Davis: “The Second Amendment is special, not because it protects guns, but because its violation signals a government with the intention to oppress its people…” Remember: After the first one, the rest are free. | |||
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3° that never cooled |
I would use Brownells 270+ glass beads at 60-65 PSI with blast gun held about 4"-6" away from the surface you're doing. This produces a very fine matte surface, with just a slight sheen to it. NRA Life | |||
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| Knows too little about too much |
Thanks! RMD TL Davis: “The Second Amendment is special, not because it protects guns, but because its violation signals a government with the intention to oppress its people…” Remember: After the first one, the rest are free. | |||
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| Member |
Make sure to protect both the crystals mating surface and the inside of the watch body. I'd get a piece of thin plexiglass cut and temporarily glue it in where the crystal was to seal the crystal sealing surface and interior of the watch body from getting abraded. | |||
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| Knows too little about too much |
Roger that. Thanks, RMD TL Davis: “The Second Amendment is special, not because it protects guns, but because its violation signals a government with the intention to oppress its people…” Remember: After the first one, the rest are free. | |||
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| Little ray of sunshine  |
I'd probably let a watchmaker do it so you don't blast parts of the case that shouldn't be blasted. The fish is mute, expressionless. The fish doesn't think because the fish knows everything. | |||
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