grayfingers
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Member since November 2007
Posts: 4,575
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Post by grayfingers on Apr 7, 2018 7:50:19 GMT -5
No worries, James! I still stop by to see your excellently executed endeavors. I had some great times here, time changes everything. Will email you soon!
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 7, 2018 8:10:44 GMT -5
No worries, James! I still stop by to see your excellently executed endeavors. I had some great times here, time changes everything. Will email you soon! Political crap sent me to self employment 30 years ago. Half those poor bastards are dead now from their career of backstabbing and it's related stress. Or look like they have lived in a concentration camp. Just started a batch in the Lot-O. Took a photo of these pre-polished in the rotary to trace time to polish, compare to a vibe prep.
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Post by grumpybill on Apr 7, 2018 9:19:15 GMT -5
Every batch has been with the nipple on the bottom of the hopper resting/making contact to base for what it is worth. This might explain the slow rolling action and need for extended run time. I think there'd be a fair amount of damping going on with the nipple touching the wood under the frame.
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Post by MrP on Apr 7, 2018 10:37:29 GMT -5
Every batch has been with the nipple on the bottom of the hopper resting/making contact to base for what it is worth. This might explain the slow rolling action and need for extended run time. I think there'd be a fair amount of damping going on with the nipple touching the wood under the frame. grumpybill I never thought of it that way but you are right about the damping. I am going to put a wrap of Gorilla Tape around the barrel to hold it up..............MrP
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 7, 2018 13:08:01 GMT -5
Every batch has been with the nipple on the bottom of the hopper resting/making contact to base for what it is worth. This might explain the slow rolling action and need for extended run time. I think there'd be a fair amount of damping going on with the nipple touching the wood under the frame. Great point. Sure seems that it would hinder motion being grounded like that. Will take anything the Lot-O has to offer at this point. I will raise it up and give it a go. Matter of fact, going out now to raise it up and see if it increases roll action. Does not mean a thing without measuring devices but I did not notice much difference in the roll action. Vibration behavior in 2 dimensions for the most part, not much movement left to right looking at label on hopper. Pivot seems to be lower right, max vibration upper left both X and Y direction. This machine is gentle compared to Vibrasonic and no need to dampen or reduce amplitude for soft materials.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 7, 2018 13:13:00 GMT -5
Looking at a glass plate from Greece found at thrift. About half way thru tumbling it. Powdered colored glass faded from one color to the next. sections colored with reactive agents. Reactive agents up close, various metals, window screens, copper wire and no telling what else melt sandwiched between to clear plates of glass. Must learn this. vegasjames fernwood Have you had experience with reactive materials ?
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Post by MrP on Apr 7, 2018 13:48:26 GMT -5
Took a better look at my Lot-O. Even if the nub rests on the bottom it is still on the frame of the part that is vibrating not contacting the board for the base. I do not see where it could be a problem..............................MrP
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Post by MrP on Apr 7, 2018 13:49:46 GMT -5
Great job again James....................................MrP
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Post by vegasjames on Apr 7, 2018 14:23:48 GMT -5
Looking at a glass plate from Greece found at thrift. About half way thru tumbling it. Powdered colored glass faded from one color to the next. sections colored with reactive agents. Reactive agents up close, various metals, window screens, copper wire and no telling what else melt sandwiched between to clear plates of glass. Must learn this. vegasjames fernwood Have you had experience with reactive materials ? Very little. I recently have been playing with trying to make Victoria stone. So I have been using various fluxes and coloring agents. But that has been the only time I have fooled with making colored silica glass. Looks like they just took a bunch of different scrap glass with the same COE and slowly brought it up to melt making sure it did not get stirred. If they did that as a plate glass then they could easily mold it in to vases or whatever without the glass getting mixed.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 7, 2018 15:21:54 GMT -5
vegasjamesLooks like they took 2 sheets of clear 3mm and melted their stuff between it. Then slumped it to an ~shallow ashtray shape. Victoria stone ? Blue or green ? What are you heating with, acetylene ? Is it glass or true stone you are using ?
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Post by vegasjames on Apr 7, 2018 15:40:11 GMT -5
vegasjames Looks like they took 2 sheets of clear 3mm and melted their stuff between it. Then slumped it to an ~shallow ashtray shape. Victoria stone ? Blue or green ? What are you heating with, acetylene ? Is it glass or true stone you are using ? I am working on blue first. I am not going to go in to a lot of details on what I am doing. I spent 2 solid months doing a lot of intense research on the topic and have a lot of it figured out. Acetylene would be overkill and would actually destroy the stone. And I doubt the story about Imori using natural crushed stone for a very simple reason. Impurities. Even trace amounts of impurities could have adverse reactions such as masking colors, altering crystal patterns, etc. And naturally occurring rock as to many impurities. There is one ingredient that would have been natural because I have not heard of any synthetic for it. But I think most of the ingredients were either synthetic or purified. I am not sure how many of the ingredients I bought are purified or synthetic. My first attempt though did not work right because of impurities. When I went back and looked closer at the analysis of the natural ingredients I saw the problem and have ordered new materials that are pure to try this again. I ended up with some beautiful dark blue glassy material, but too porous to be of use. So I plan to grind it down in to a powder for future experiments.
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Post by Pat on Apr 7, 2018 15:44:52 GMT -5
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 7, 2018 15:50:27 GMT -5
Took a better look at my Lot-O. Even if the nub rests on the bottom it is still on the frame of the part that is vibrating not contacting the board for the base. I do not see where it could be a problem..............................MrP It looked that way to me too Michael. I can't see that hopper staying in place in a lot of conditions. You'd think the manufacturers would have made a stop or a saddle to keep it from sinking to contact. Gotta start getting that glass to market, spent too much and need to draw a bit of income.
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jamesp
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Post by jamesp on Apr 7, 2018 15:53:33 GMT -5
Attack of the blobs Pat. So many blobs, you don't want to know how many.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 7, 2018 18:13:30 GMT -5
Please post some photos as you get it dialed in vegasjames. Bubbles are bad news in glass, impurities can sure cause them. Common impurities at that. Wife is making some melts up today, going to get her to sandwich some BB sized gem grade almandine garnets and BB sized silicon carbide between clear glass.
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Post by vegasjames on Apr 7, 2018 18:39:39 GMT -5
Please post some photos as you get it dialed in vegasjames . Bubbles are bad news in glass, impurities can sure cause them. Common impurities at that. Wife is making some melts up today, going to get her to sandwich some BB sized gem grade almandine garnets and BB sized silicon carbide between clear glass. I will be back at it when I get back to town. Have been out of town a lot lately helping out my dad. When I get back though I am going to go back over all my notes again and start preparing for another try now that I figured out the mistake last time.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 8, 2018 5:47:21 GMT -5
Please post some photos as you get it dialed in vegasjames . Bubbles are bad news in glass, impurities can sure cause them. Common impurities at that. Wife is making some melts up today, going to get her to sandwich some BB sized gem grade almandine garnets and BB sized silicon carbide between clear glass. I will be back at it when I get back to town. Have been out of town a lot lately helping out my dad. When I get back though I am going to go back over all my notes again and start preparing for another try now that I figured out the mistake last time. Lost Mom March 2017, Dad January 2018. Enjoy them while you can James.
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Post by fernwood on Apr 8, 2018 6:20:45 GMT -5
jamespYou asked: Have you had experience with reactive materials ? Only experience is my HS experiments. Put copper and iron shavings between glass. Also mixed them with ceramic glaze.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 8, 2018 6:34:48 GMT -5
hummingbirdstonesI am practicing making some cab shapes using an 8 inch flat lap. The lap is fine and don't need a cab machine. Using 100 grit wheel...cuts fast. I was going to mention that I have about 200 christmas tigers to run. After melt I chunked half the batch in the rotary and did a prelim shaping with SiC 30 coarse grit. The tumbler ground off a lot of the sharp edges and points that required extra hand movement on the lap. The tumbler rounded the edges speeding up the shaping at the edges. I did 100 units without tumbling and 100 units after tumbling. Was surprised at the time savings at the bench due to the help of the tumbler. I suppose most cabs are flat on one side and tumbling preforms would not help. Many were shaped into tongues, pentagons, tear drops, etc were already random shards close to the shape targeted. I timed myself, 20 seconds per unit as skill improved. Guessing that is fast since only silhouette shaping was required. They will go back to the tumbler.
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Post by hummingbirdstones on Apr 8, 2018 11:51:10 GMT -5
Looking good! That's an attention getting color and with the bold stripes doubly so.
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