blizzofoz
off to a rocking start
Member since December 2006
Posts: 22
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Post by blizzofoz on Mar 5, 2007 11:33:20 GMT -5
I've seen reference to someone (Bikerrandy?) hooking up a shopvac to a grinder... I've tried to run a search and came up nothing. Is there a thread on this?
Also, I know people have setup a water drip on their grinders... I was wondering if there is link for some setups?
I'll be ordering a Sic wheel for my grinder and want to contain the dust as much as possible.
Thanks!!!
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Post by deb193 on Mar 5, 2007 11:46:02 GMT -5
Here is the thread you want: forum.rocktumblinghobby.com/index.cgi?board=general&action=display&thread=1160512973You should either do the vac or the drip/spray, I don;t think both are wanted. Water is preferred because it will keep too much heat from cracking the stone. You can use a drip reservoir overhead and plastic tubing, or a 5-gal bucket with a pump and tubing. A simple hole in the top of the splash guard that the tubing can stick into might be enough. In drip systems, there may not be enough water volume to spread across the wheel w/o some help. You could rig a tube with multiple holes across the wheel, or you could use some sort of leather wiper. With the pump, if there is enough water, it will spread. You might still want a wiper to control spray. My rock Rascal has a hole in the top and I just stuck a tube in it. I have the tubing hooked up to a garden hose. I have the drainage go into a 5-gal bucket, and the overflow form the bucket into the floor drain. (The bucket serves as my sediment trap.) The silicon dust has some long term health hazards. Some Copper oxides are more toxic. Some rocks like Cinabar has mercury, or some types of serpentinite have asbestos. Don't mess with dust!
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yogi
starting to spend too much on rocks
Member since March 2006
Posts: 175
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Post by yogi on Mar 5, 2007 12:38:46 GMT -5
Hi Blizzofoz, Randy had a thread with shop pix, the vac hooks up to a elbow on the guards. You would need a hole saw and an elbow of some sort to hook a hose up. If the guards on the grinder are formed out of sheet metel, you could tinker something together. I would take the guards off, cut a smaller hole then needed (1/2" to 3/4" less) somewhere towards the back. Then cut some 'pie' like cuts out to the desired diameter of the hose(the ID of the hose elbow). Bend these 'tabs' out, put an elbow over them and screw the elbow onto the tabs. Run a bead of silcone around the elbow edge and your done. Check Home Depot's tool dept to see how miter saws have a vac hookup. As far as a water system, that can be dangerous. Most hand tools are double insulated, meaning that the motor shaft is totally insulated from the motor windings by 2 layers of high temp nylon. Now a bench grinder may not be, I don't know. With a single layer of insulation, if it fails there can be current on the motor shaft. Depending on how much water you are using, it tends to spray all around when grinding. On a machine like a Genie, they built the grinder/motor with sealed bearnings and I'm betting it's double insulated. If you're just wetting the wheel a little, then it should be OK, like a spray bottle sprizer. I have heard of using a wet sponge on the top of the wheel, but I have never tried it. When I was dry grinding, I just kept a bowl of water and dipped the stone in it every cut or so. With any water around it, make sure you use a GFI, there are extention cords with one built in. Have fun but stay safe, Bill
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blizzofoz
off to a rocking start
Member since December 2006
Posts: 22
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Post by blizzofoz on Mar 5, 2007 13:14:45 GMT -5
Thanks Daniel and yogi... that is why I asked about setup for some sort of drip. I was curious on how people avoided getting water sprayed without electrocuting themselves!
I appreciate the links!
What type of masks do you recommend? Are there different kinds and which one should be used for this type of work?
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one80mike
freely admits to licking rocks
@(-_-)@ Princess Leia!
Member since February 2007
Posts: 908
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Post by one80mike on Mar 5, 2007 18:41:26 GMT -5
Hey Blizz, I just got a grinder on the weekend and I am just dipping the rock in a bucket of water. I set up a small container under each wheel to catch the water/dust sludge that initially was going all over my bench and the floor. There was still some dust, but there wasn't much, most of it became sludge. I still wore a mask, however. I found the diping also cleaned the dust off the rock giving me a clearer view of what was going on. Again, just like tumbler sludge, keep grinder sludge away from your plumbing. I was setting hard in the containers even when there was over 1/2 inch of water in there. Hope this is of some help. Mike
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yogi
starting to spend too much on rocks
Member since March 2006
Posts: 175
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Post by yogi on Mar 5, 2007 20:03:07 GMT -5
The disposable dust masks from the paint dept of the HD. Even a damp bandanna will do. Some eye protection is needed also; I have gotten a rock chip or two in the eye and I can't requmend it ;-( Bill
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