jasonshort
starting to spend too much on rocks
Member since June 2019
Posts: 113
|
Post by jasonshort on Jul 21, 2019 19:02:23 GMT -5
I have 2 drums to go on a poly. I was going to take off the grinding wheels and put the drums on. Does anyone use these? I was planning on cutting out pendants then use the drum to shape it then a vib tumbler to polish them. What grit sandpaper should I get and how fast do they wear out? Thanks for the help   |
|
zarguy
fully equipped rock polisher
Cedar City, Utah - rockhound heaven!
Member since December 2005
Posts: 1,791
|
Post by zarguy on Jul 21, 2019 22:53:02 GMT -5
I use them for grits starting at 280.
I use diamond belts on the drums & I rediamond them when they wear out.
Many people still use silicon carbide belts instead of diamond because they can cost as little as $2 each.
The cheapest place I found them is Santa Fe Jewelry Supply.
It's crazy how much the diamond ones cost, even though synthetic diamonds are cheap to make.
When I rediamond them, I put 10-1t5 carats on an 8" belt.
That costs me $3-4.
A 6" x 1.5" belt would require lots less diamond powder.
Lynn
|
|
|
|
Post by pauls on Jul 22, 2019 2:39:50 GMT -5
I got carried away when I was building a cabber and made two, one with expanding drums and one with nova type soft wheels, I tend to use the expanding drums more, no real reason that I can put my finger on at all, maybe the extra width.
|
|
