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Post by gmitch067 on Jun 5, 2017 1:51:08 GMT -5
Hi HardRoks - I just created a thread in "Lapidary Discussion Topics - Rock Carving" section entitled "Enclosed Space HEPA Vent System for Rock Carving" which addresses the issue we have been discussing in this thread. I hope it helps you.
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Post by johnjsgems on Jun 5, 2017 14:02:15 GMT -5
Rock carving of course creates a lot less dust than the original post about the Richardson's dry sander. My neighbor years ago had one he used in his garage with door open. Looked like garage was on fire with huge clouds of rock dust billowing out. Guy wore no protection at all. I've passed on buying several used ones very cheap because they just look too scary to me.
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Post by gmitch067 on Jun 5, 2017 16:14:27 GMT -5
Rock carving of course creates a lot less dust than the original post about the Richardson's dry sander. My neighbor years ago had one he used in his garage with door open. Looked like garage was on fire with huge clouds of rock dust billowing out. Guy wore no protection at all. I've passed on buying several used ones very cheap because they just look too scary to me. I do not use the sander much... but my daughter does. It is hard to keep the sand disk/belt wet while operating. Many times as my daughter uses the sander I sit beside her and produce a near constant stream of water via spray bottle onto the sanding wheel or belt... very messy! This helps to keep the dust down. When using the sander, the garage door is usually open and shop fan blows the dust out the open garage door. I have to switch between water spray and sanding frequently.. and it is a pain! I am looking into a drip tank above, and a 5 gallon bucket below... another project... or just buy a commercial solution sold for cabbing machines. I try to avoid the sander for another reason - it brutalizes the rocks I am working on. The disks only last a short time before they need replacing, and create high friction temperatures that make the rock fracture with the rapid fluctuation between the heat produced and the cold water spray. The belt has a section where the ends of the belt meet and join. This produces a difference in belt thickness that translates to the stone as a "bump" as it passes the back pressure plate. I have had a few stones break apart with the rough travel. I now DOP the stones and use the belt just above the back pressure plate... less banging around.
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Post by johnjsgems on Jun 5, 2017 19:46:26 GMT -5
When I read "high speed sander" my mind jumped to Richardson high speed sander. You need to invest in a water cooled lapidary unit. If you like belt sanders Covington makes several different models. I'm partial to expanding drums and diamond belts. A two wheel arbor set up if found used would be very handy and affordable.
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Post by gmitch067 on Jun 5, 2017 21:58:20 GMT -5
Oh... To dream!!! Space is a premium here. I have been relegated to the garage with the car space my only domain - when the car is not parked there that is. I could definitely get into a full cabbing setup if I could. The cabochons the other members have displayed have been so beautiful!
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