Can you give me some detail about getting a nice, velvety finish on some of my cabs?
So far I've learned I'll need to bring them up to a polish on my grinding wheels first, then use a vibratory tumbler. That's where it gets confusing.... the vast array of grits, fillers, ceramic media...do I use these with water? I'm going in circles! A little help, please?
Why are you bringing them up to pre-polish? Get your shape and then just take it to about a 400 grit.
This will give you a much softer mat finish.
I like to use foam sanding sheets in ultrafine or superfine grits. They're flexible, so the conform to cab surfaces, but they give a pretty good polish.
Thanks so much for your replies.... I'll give those methods a go.
What I'm looking for is a finish akin to beach glass.... that frosty, velvety look.
the courser the grit you run the stones on, the more "frosted" it will look. Also depends on the hardness of the stone you are tumbling. are you tumbling a translucent material?
No, not translucent (as of yet), but stones like Mexican Birdseye Rhyolite, some jaspers, things like that. I have a vibe tumbler on its way and I do have some 'fine-cut plastic media' (little cone shapes) that RioGrande suggested. At the time I just had a regular rotary tumbler which did nothing to achieve the finish.
I just need a jumping off point for the vibe -- I'll try the plastic media in it, but would like some suggestions as to what to fill it with other than that. I know that people use walnut shells for metal, and that's about all I know.