jamesp
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Post by jamesp on Dec 26, 2016 13:45:04 GMT -5
I'll play with the different cutting wheels. Sitting back watching the water management engineering.
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Deleted
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Post by Deleted on Dec 26, 2016 13:59:10 GMT -5
Just ordered this 5" tuck point wheel for $32 PPD. Combo 5/8 and 7/8 hole. Ebay May be soft, at that price no biggy. The bulk of material removal is often done by leveraging the rock up against the bottom edge at the corner of the diamonds with palms planted on deck. Segments 10mm deep and 5-6mm wide ? Never tried one. Called a 'tuck point', segments mounted on heavy plate Typical dimensions: 5" Premium Plus Split Segment Tuck Pointing Blade .250" Thick 10mm Segment Height 7/8"-5/8" Arbor Extremely Fast and Aggressive Use Wet or Dry Looks like three blades stacked for you in one unit. Without spaces for chipping, but diamonds in those spaces. Can't wait to see your photos and report on outcome. Price of this similar to three 7" segmented blades.
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Deleted
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Post by Deleted on Dec 26, 2016 14:00:17 GMT -5
@shotgunner And it would be nice to have the bottom of the wheel sitting in water like a rock saw does. Which would take some extreme water management baffles and containment. Running the stack is something I have thought of trying . Baffles to keep it from being like a tile saw type water bath would be even more necessary with a stack on it . I think it is doable though . In class we put a 1" X 6" pine board as a shield and wear vinyl aprons to stay dry.
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jamesp
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Post by jamesp on Dec 26, 2016 14:03:24 GMT -5
Vinyl aprons totall sufficient. why not.
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Post by wigglinrocks on Dec 26, 2016 14:04:48 GMT -5
Running the stack is something I have thought of trying . Baffles to keep it from being like a tile saw type water bath would be even more necessary with a stack on it . I think it is doable though . In class we put a 1" X 6" pine board as a shield and wear vinyl aprons to stay dry. Way to easy , trying to over think this like I do with everything else .
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Deleted
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Post by Deleted on Dec 26, 2016 14:13:09 GMT -5
Vinyl aprons totally sufficient. why not? Wet hands in cold weather still an issue. We discussed aquarium heaters in the buckets.
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jamesp
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Post by jamesp on Dec 26, 2016 14:58:35 GMT -5
Vinyl aprons totally sufficient. why not? Wet hands in cold weather still an issue. We discussed aquarium heaters in the buckets. Don't like gloves and grinders, hot water makes sense.
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Post by 1dave on Dec 26, 2016 15:29:14 GMT -5
I made a "drip spreader" out of old credit cards. The tywraps work best doubled with the spaces down to act as a dam with multiple outlets. How are these parts assembled? Solvent glue? I love the concept. The ridges in the tywrap allow spaced dripping? Yes. I used superglue. The dips that the tywrap clips down into are like the serrated top of a castle wall. superglue the tops of them to the credit card and the spaces allow the water through. I later put another tywrap on top of the first one to make the dam taller and hold back more water.
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jamesp
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Post by jamesp on Dec 26, 2016 17:29:48 GMT -5
1daveWhat do you use that sander for ?
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Post by 1dave on Dec 26, 2016 19:29:23 GMT -5
1daveWhat do you use that sander for ? Not much anymore. I used to use it for flattening the backs of cabochons and whatever needed smoothing.
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vwfence
has rocks in the head
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Post by vwfence on Dec 27, 2016 12:23:35 GMT -5
Most farm stores have heaters for water tanks and buckets
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grizman
freely admits to licking rocks
Member since July 2011
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Post by grizman on Jan 8, 2017 22:20:48 GMT -5
OK, time for an update on any and all the experimenting that has been going on regarding your super grinders. What works great, so-so, or don't bother?
Here's my thoughts. A 7 or 8 inch tile saw runs at about 3400 to 3600 rpm. An 8" bench grinder runs at about 3450 rpm. The 3450 rpm may be too fast for a super grinder, I don't know? But if I use 4" stacked blades it cuts the speed in half, roughly 1725 rpm. If that is too slow, move up to a 4.5, 5, 6 or even a 7 inch blade stack. The threaded arbor shaft on a bench grinder is long enough to hold at least a 1" wide wheel and maybe 1.25+? I think one inch of grinding surface for a super grinder would be enough for my needs. I am just a hobbyist, so other than prepping some rough for my tumbling and maybe shaping a cab for my rare attempt at jewelry making (necklaces, western belt buckles) that would meet my needs.
Before I make my order to McGillis Warehouse for blades, I'd like to hear what others think about the "ideal" size of blade to run on a bench grinder (3600 rpm).?
Looking at diamond blades is like doing Chinese arithmetic. I am going to go with the cheapest...if they don't work or last for the little I'll use them, I 'm not out a bunch. I am pretty sure i do not need 10 blades at $100.00 each! I will be going with McGillis Warehouse.
I hope the "super grinder" posting and subject is not dead. Sorry for the reincarnation if it is.
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Post by wigglinrocks on Jan 8, 2017 23:14:51 GMT -5
I don't consider this a dead subject , still in the planning stages . If you are using a bench grinder do you plan to use water for dust control and cooling ? Water and volts not a good combination . Or do you have ideas to keep water from the grinder ? I am going to use my lortone 2 wheel lap grinder or use pillow blocks and make the shaft and use belt drive . Blade choice is up in the air yet , but I agree , cheap to start with .
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grizman
freely admits to licking rocks
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Post by grizman on Jan 8, 2017 23:52:22 GMT -5
wigglinrocks I am thinking of coming up with some sort of plastic "storage bin" that will be large enough to fit over the grinder. I thought that I could cut a hole that is just a little bigger than the arbor shaft coming out of the motor cover. When I replace the inside "wheel guard" it should make a near waterproof seal. If I need more, I can use silicon caulking to finish the seal.
I know that the real issue will be rock dust...more than the cooling issues as the blades can be used wet or dry. Very obviously, I am far from any kind of engineer, so the whole process will be some trial...and probably lots of error!
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jamesp
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Post by jamesp on Jan 9, 2017 5:16:58 GMT -5
wigglinrocks I am thinking of coming up with some sort of plastic "storage bin" that will be large enough to fit over the grinder. I thought that I could cut a hole that is just a little bigger than the arbor shaft coming out of the motor cover. When I replace the inside "wheel guard" it should make a near waterproof seal. If I need more, I can use silicon caulking to finish the seal. I know that the real issue will be rock dust...more than the cooling issues as the blades can be used wet or dry. Very obviously, I am far from any kind of engineer, so the whole process will be some trial...and probably lots of error! I have been using this tile saw with a 5 inch diameter tuck blade. Feels very safe and smooth. Not a super grinder but one mean grinding machine. $32 blade bolted directly into $99 tile saw. Tile saw doubled grounded and water safe. Blade only sticks up 3/4 inch above table. Shoots mess away from you. User friendly This blade from Ebay
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Post by 1dave on Jan 9, 2017 11:29:23 GMT -5
I have gently touched smooth rim diamond blades in motion without a problem. I wouldn't dare try it with the segmented blades.
For a super grinder I would like 3 sets.
Set 1 = 1-2' of blades with CD spacers for rough grinding, Set 2 = 1-2" of blades without spacers for smoother grinding Set 3 = a single blade for grooving for wire wrapping.
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Post by wigglinrocks on Jan 9, 2017 13:37:41 GMT -5
I have gently touched smooth rim diamond blades in motion without a problem. I wouldn't dare try it with the segmented blades. For a super grinder I would like 3 sets. Set 1 = 1-2' of blades with CD spacers for rough grinding, Set 2 = 1-2" of blades without spacers for smoother grinding Set 3 = a single blade for grooving for wire wrapping. When you say "segmented " do you mean the turbo style with the grooves on the side of the blade ? Or the ones with notches cut into the cutting edge of the blade .
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Post by 1dave on Jan 9, 2017 15:00:03 GMT -5
I have gently touched smooth rim diamond blades in motion without a problem. I wouldn't dare try it with the segmented blades. For a super grinder I would like 3 sets. Set 1 = 1-2' of blades with CD spacers for rough grinding, Set 2 = 1-2" of blades without spacers for smoother grinding Set 3 = a single blade for grooving for wire wrapping. When you say "segmented " do you mean the turbo style with the grooves on the side of the blade ? Or the ones with notches cut into the cutting edge of the blade .
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jamesp
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Post by jamesp on Jan 9, 2017 17:49:51 GMT -5
At 3600 RPM it grinds as if the segments are non existent 1dave. At that speed the protruding #25 diamonds will never let you get to the gaps between the segments. Liking the coarse diamonds. Coarser diamonds = faster material removal. That wheel is particularly smooth cutting and requires very little pressure on the rocks. Of the 6 diamond wheels I run this one is my favorite. And mounted in a tile saw it runs true with minimal blade exposure. I feel safest running this set up. Just saying.
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Deleted
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Post by Deleted on Jan 9, 2017 21:42:00 GMT -5
I have gently touched smooth rim diamond blades in motion without a problem. I wouldn't dare try it with the segmented blades. For a super grinder I would like 3 sets. Set 1 = 1-2' of blades with CD spacers for rough grinding, Set 2 = 1-2" of blades without spacers for smoother grinding Set 3 = a single blade for grooving for wire wrapping. When you say "segmented " do you mean the turbo style with the grooves on the side of the blade ? Or the ones with notches cut into the cutting edge of the blade . Actually "segmented" means the cutting portion of the blade is made of segments. You can have a segmented blade of nearly any size. They may or may not be thick like the one Jim loves above. The "super grinder" we discuss is originally an affordableway to make a grinding wheel using stacked common cutting blades. Jim's does this buy starting out real thick. No stacking required. Once again jamesp finds a novel and effective process. No doubt his mother had an easy childbirth do to his innate abilities. 💪. 🍻
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