zapins
starting to spend too much on rocks
Member since March 2016
Posts: 116
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Post by zapins on Sept 5, 2016 22:26:00 GMT -5
How do you filter your mineral oil coolant and reuse it? Descriptions would be good, but photos of your setup would be great!
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Post by pauls on Sept 6, 2016 4:50:48 GMT -5
I let mine settle, just drain it into a drum a leave it. Having said that I am researching building a centrifugal oil cleaner like the waste vegetable oil diesel people use. search oil centrifuge, It shouldn't be a particularly difficult build, I am thinking of using a LP gas Tank for the outside casing and I am looking around for something to use for the inside part that spins, it might be another smaller gas tank but I am not sure I am going to get it balanced well enough for the speed it spins at, a nice spun aluminium bottle of some sort would be ideal but still searching.
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wendysrockpile
off to a rocking start
Member since August 2014
Posts: 8
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Post by wendysrockpile on Sept 10, 2016 1:36:49 GMT -5
I use two 5 gallon buckets. Make an x out of plywood to hold the top bucket about 8" off the bottom of the bottom bucket. You can use anything you want too, you just have to get the bucket up off the bottom and still have space for the filtered oil. Take the top bucket and drill a bunch of 1/4" holes all over the bottom, You are basically making a strainer, put it inside the bottom bucket. Take a large brown paper grocery bag and put it in the top bucket. Pour in the oil and let it filter through. I replace the bag after every load to keep the oil flowing. Otherwise the filtering slows down trying to move through the sludge at the bottom of the bag. Hope that helps. We have a dozen or more saws in our club workshop, we filter a lot of oil. When we go to use it we mix it about 1/2 and 1/2 with fresh oil.
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monna0000
starting to spend too much on rocks
Member since May 2016
Posts: 243
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Post by monna0000 on Sept 10, 2016 6:49:56 GMT -5
Have not tried but been thinking about a nylon stocking and some wire to create a net/filter.
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Post by Peruano on Sept 10, 2016 8:12:04 GMT -5
Use the paper bag unless you have an infinite supply of stocking and are only filtering small quantities. One bag will work if handled carefully. Draining is slow but so is rock sawing.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Sept 10, 2016 8:22:27 GMT -5
I use to filter the stuff,but now just let it settle and scoop up what I can over time....I use the used oil for in between fill ups while cutting....
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 10, 2016 10:36:08 GMT -5
At class, because of knowledge I gleaned here, they made a kit that utilizes a double thickness of pillow case in a purpose made funnel. Pour it all in, come back next week and oil is 98â„… clear and sludge is 98% dry. Use the oil, toss the sludge in the bin.
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Post by Drummond Island Rocks on Sept 10, 2016 13:44:06 GMT -5
you asked for pictures so here ya go Top bucket has holes drilled in the bottom. Standard paper grocery bag is the filter. Holes in the bucket Sludge that gets thrown away after all the good oil has had time to drip through the filter. I do not rush the process. I let the old oil filter till I am ready to clean the saw out again. Clean oil in the bottom bucket. I get about 50 percent back. The dark at the bottom is just tiny bits left from using the same bucket for over 4 years. when I dump the recovered oil I just stop pouring before it gets to the little bit of dirty oil at the bottom. Chuck
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Post by Jugglerguy on Sept 10, 2016 17:17:32 GMT -5
I do mine almost exactly like Chuck. If I used his setup, it would get knocked over and spill all over the garage floor. Since I only use about a gallon of oil in my saw, I can get enough space in the bottom bucket by sticking a couple blocks of wood between the two buckets. They're just squeezed in-between and fall out when I pick up the top bucket.
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Sept 11, 2016 9:10:20 GMT -5
Will the grocery bag method filter out coloring in the oil? I've drained mine and it's red from cutting banded iron.
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Post by Drummond Island Rocks on Sept 11, 2016 10:29:36 GMT -5
Make an x out of plywood to hold the top bucket about 8" off the bottom of the bottom bucket. Great idea with the plywood "X". I'll be stealing that one. Thanks. Chuck
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Post by Jugglerguy on Sept 11, 2016 10:37:23 GMT -5
Will the grocery bag method filter out coloring in the oil? I've drained mine and it's red from cutting banded iron. Yep. I have cut banded iron and the oil comes out slightly yellow, but almost clear after paper bag filtering.
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Sept 11, 2016 11:09:45 GMT -5
Nice! Thanks
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Post by Peruano on Sept 11, 2016 17:22:43 GMT -5
Oil should come out totally clear unless you have some small holes or leaks in your paper bags (at least with double bags). I do have some sediment that sneaks into the bottom bucket, but its because I also drain dripping pieces of rock there to recapture oil that would otherwise be lost when I remove a stub or uncut portion from the saw. I place such pieces between the bag and the outer bucket and hence they tend to drain directly into the lower bucket. Adding a bit of color oil to a saw that previously had an inch of gunk and rock sludge, is trivial. 95% clean is great when it comes to rock saw sumps.
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Greg Tidwell
off to a rocking start
Member since August 2016
Posts: 5
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Post by Greg Tidwell on Sept 14, 2016 10:55:06 GMT -5
A follow up question - Where do you guys dump the sludge? I live in town and lack property to just store it. Do any recyclers take it? Does it have to go to hazmat?
Thanks!
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Post by Jugglerguy on Sept 14, 2016 12:07:58 GMT -5
I put the paper bag with dryish sludge in the garbage. I think the fact that my pharmacy mineral oil is edible means that it is not hazardous.
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Post by Peruano on Sept 14, 2016 18:03:10 GMT -5
Its probably one of those questions you should not ask. I'd guess that most people put it in the garbage can. I'm sure its less noxious and toxic than many things in there with it.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 15, 2016 15:45:54 GMT -5
Its probably one of those questions you should not ask. I'd guess that most people put it in the garbage can. I'm sure its less noxious and toxic than many things in there with it. Yes,always better to ask forgiveness than permission. Even things like arsenic bearing bumblebee Jasper have concentration so low it won't be detected in the landfill, mostly.
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