HS sanders are nice for sanding large pieces. I have used them for slabs, but when I do I sand 6 or so at a time, rotating through them before they get hot to avoid cracking. I ALWAYS hook it up to a vacuum to suck most of the dust up, and ALWAYS wear safety glasses and a dust mask. Also it's important to know what you're sanding, some rock dust is poisonous and the dry sanding doesn't work for everything. If you choose to build one they use a 3450 RPM motor, not the standard 1725RPM type.
Maybe Democrats will eventually turn on Obamacare when they realize you might need a photo I.D. to participate in the program. Dennis Miller
bobby1 would be the one to talk to about dry sanding. I believe he dry sands most of his giant cabs using SiC belts. Following his advice when I was having trouble with scratches on just one portion of my cabs (every time), I started dry sanding mine with a well worn SiC belt and my scratch issue disappeared. You do have to be careful with heat and some stones just do not take to heat well but on those that do ok, it brings up a super shine. I found that it did not work on a couple of softer stones, they ended up kinda orange peeled from the heat.
Chasfire has one of Richardson's High Speed sanders, and you have all seen the killer polish he gets. Big material acts as its own heatsink, whilst thin slabs do not, so you have to be careful in not overheating them. Woody
Post by rockhound97058 on Mar 15, 2010 21:48:10 GMT -5
These sanders go work great. I've used one for 14 years and love it. It can be a little intimidating at times due to the sanding head right next to your fingers and in my case chest level. Also it takes time to get the feel of it. I used to use this for rough to fine grits, but now I strictly do my course sanding and finish up with a expando drum! I do small 1/4 stones up wards of huge pieces with this sander. I also do slabs by hand.
One thing though if you shred paper it can tear meat from your hand LOL.... Course grit paper just floats, however the fine grits are best glued onto the head. I personally never glue any of mine due to the mess and found the glue would create bumps under the paper.
The unit you linked to is a little rough looking, however still in usable material. I see the auction has ended - Great price for whoever bought it... These things run about $400 new right now
These sanders can build up heat, but the trick is keep moving and try not to bevel the edges with it. This machine works fantastic with agates, jaspers and more... However some thing it's terrible... Mexican Coconuts are a pain in the rear... best with wet drum.
Speaking of Richardsons... Bonnie called me yesterday and told me to pass the word they opened some of the beds for digging. Red Bed, Moss Bed and Pony Butte are open. Blue bed like every year is full of water and won't be open for another month or so.
Another quality posting by the Redheaded Rockhound! =) ~ Gotta lick those rocks to see if they shine!!
I have used this sander on agate and jaspers quite a bit. One thing to keep in mind is the temperature difference between cold rocks and the heat from the sander. The only time I have had a problem with heat is when the agate or jasper is real cold before sanding. I now warm the rock before I start sanding. I have even sanded a slab that was only 1/16" thick without cracking it.
rockpickerforever: Thanks, Mike. You can bet I'll have fun, one way or the other!
Nov 26, 2013 15:26:48 GMT -5
herchenx: Has anyone heard from Jo lately? (NatureNut)
Nov 26, 2013 16:54:48 GMT -5
drocknut: Have fun in the desert Jean.
Nov 30, 2013 20:49:04 GMT -5
Shotgunner: rock'n the homegrown pizzas tonight! woot!
Dec 1, 2013 19:06:41 GMT -5
Fossilman: Nothing better than making homemade pizza,plus the dough and sauce....
Dec 1, 2013 22:07:06 GMT -5
iamnoone: Just started my first tumble, my rocks are not going in circles like the thumler uv 18 videos I've seen online. They are just vibrating next to each other quickly. I followed instructions to the letter. Enough grit, water and rock. Am I just worrying?
Dec 2, 2013 18:55:28 GMT -5
herchenx: iamnoone - are the rocks already rounded or are they all jagged? is the barrel full up to within 3/4" of the top of the cone? Are you running a UV10 or a UV18 or something else?
Dec 3, 2013 15:31:58 GMT -5
catmandewe: Usually if they are just sitting there you have too much water. I usually add one drop of liquid hand soap also to make the grit stick to the rocks, but be careful not to add too much soap or water.
Dec 3, 2013 22:28:54 GMT -5
Jasper-hound: Guys, I appreciate the questions. For my own pendants, which need to be more masculine, I wear simple stones with only a sterling silver ring soldered through a drilled hole. I have found this to be a good look, and other men enjoy them as well.
Dec 8, 2013 12:02:14 GMT -5
roy: there is something better than homemade pizza put it in the smoker !!!!!!
Dec 10, 2013 10:10:34 GMT -5
Shotgunner: I shoulda never made those pizzas. I'm allergic to wheat and my knees hurt for a week after. Never again!
Dec 10, 2013 12:11:37 GMT -5
dmm: Hello fellow rock hounds. Newbie member
Dec 10, 2013 16:37:42 GMT -5
Fossilman: Welcome dmm.....
Dec 10, 2013 17:50:47 GMT -5
wampidy: I feel for ya Scott. I am allergic to some nuts which I love but I feel like s..// when I accidentally down some peanuts. I can eat cashews but I can't eat them because they have some peanuts in them. GO FIGURE.
Dec 10, 2013 19:52:50 GMT -5
Shotgunner: finished two spheres tonight! woot! Pix to follow, maybe even manana.
Dec 10, 2013 23:02:26 GMT -5