Re: What kind of boro is this
like most techniques/certain looks in this crazy medium, there are several ways to skin this cat, most involving shaved/ground up silver.
i'm 99% sure that the "no fume, fume tech" goes something like this: dump some silver bits or shavings into a tube, and melt down the tube from the end to encase the silver globules. then heat the gather until pretty soft and smack it with a hammer or other tool (dowel, graphite block?). repeat until silver is at desired distribution through the gather. i've never actually used this tech myself, but have heard plenty of people talk about it on facebook. honestly i always thought they were full of shit and trying to "have us on", but apparently it works.
what i did was to take my silver coin, shave it on a metal file and get it pretty fine ground. i'd take a tube of clear (simax was my go-to) and blow a bubble, open bubble on the end and let this bench cool a bit. then i'd either (i've done it both ways, with varying degrees of success with each) try and charge the cooled off bubble with static electricity (rubbed on a wood sleeve, kevlar worked too) and dump in some silver shavings while rotating the bubble in order to get even silver filing distribution. then take the bubble, heat gently (don't knock it on anything, your silver shavings will then fall off the walls and just gather at the bottom of bubble), close the hole and then reduce/implode the bubble to solid gather (if i wanted solid chunk) or just until the silver sticks if i wanted a hollow blank. then do whatever you wanted with it.
another way i tried was the same as above, only i'd take the bubble w/hole popped, evenly heat it until not quite hot enough to be moving and then sprinkle silver shavings into the hole while rotating, and hope like hell the shavings would stick w/o being all in one blob. then do as i did on the above example, either reduce to solid or until silver was stuck etc.
i'll attach a few examples of marbles i made using the above referenced techniques. some came out great, others merely so/so. if i can answer any other questions feel free to drop a pm or ask here.
happy holidays everyone.
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