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Tips, Techniques, and Questions -- Technical questions or tips |
2015-12-06, 8:07pm
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Got Honey?
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Join Date: Aug 07, 2012
Location: Western Colorado
Posts: 2,183
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Anyone using the JoolTool for cold work?
Saw the JoolTool demo at the gathering and talked with Anie. Seemed like it would do a nice job. Got one and am having issues with the process. After working with it several times and coming out with the same finish I emailed her. She did not seem to be able to help really, referred me to her video and told me to keep trying.
So, this is the finish I am getting.
I am using the fine diamond, the medium grind diamond, then the very fine diamond as per her video. Finishing with the felt and compound.
Can anyone shed some light as to why I am getting this cloudy, pitted look?
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2015-12-07, 8:46am
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Senior Member
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Join Date: Jun 23, 2005
Location: Up and down I-95
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You are going from fine to medium to very fine? I'm not familiar with this tool or the video. But I've done some coldworking. Try medium, fine and then very fine and felt last.
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Rebecca
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2015-12-07, 9:12am
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Corgi Cult Member
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Join Date: Jan 10, 2006
Location: Central Illinois
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I use my Jooltool for silver, not glass, but is it possible you are pressing too hard from below and taking off more glass instead of polishing the surface? Dip more frequently?
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Kathy
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2015-12-07, 11:10am
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Dix Harrison
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Join Date: Mar 31, 2009
Location: KCKS - But my heart is in Scotland
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I LIKE this finish!
I didn't know jooltool would cold-work glass!
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2015-12-07, 1:10pm
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Got Honey?
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Join Date: Aug 07, 2012
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Quote:
Originally Posted by Three Muses Glass
You are going from fine to medium to very fine? I'm not familiar with this tool or the video. But I've done some coldworking. Try medium, fine and then very fine and felt last.
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There is a fine silver diamond disk which is not as fine as the medium paper diamond disk. I'm sure it doesn't make sense but it is in her glass video t use them that way. I have no problems until the final polish. I cannot get the gloss high is what I need.
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2015-12-07, 1:33pm
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Senior Member
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Join Date: Aug 31, 2008
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I don't use this tool but have done quite a bit of cold working in the past. The photo looks like pits which need to be smoothed out before polishing.
Cooljools website has PDF's, I don't see any videos.
http://jooltool.com/PDFs/GlassKitInstructions2015.pdf
The PDF for glass lists the following order for polishing:
coarse green
medium pink
fine blue
very fine orange
then polish with compound.
From what you say in your first post, why don't you try medium, fine, very fine, then polish and see what you get?
Darrell
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2015-12-07, 3:10pm
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Senior Member
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Join Date: May 27, 2008
Location: Albion NY
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You may find yourself switching back and forth between the last two grits.
Are you changing directions, what type of compound are you using?
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2015-12-07, 5:48pm
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Got Honey?
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Quote:
Originally Posted by dwgrant
I don't use this tool but have done quite a bit of cold working in the past. The photo looks like pits which need to be smoothed out before polishing.
Cooljools website has PDF's, I don't see any videos.
http://jooltool.com/PDFs/GlassKitInstructions2015.pdf
The PDF for glass lists the following order for polishing:
coarse green
medium pink
fine blue
very fine orange
then polish with compound.
From what you say in your first post, why don't you try medium, fine, very fine, then polish and see what you get?
Darrell
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This is the video she referred me to for polishing glass. I bought the glass polishing kit. https://www.youtube.com/watch?v=CVdqn0gZ9Sk&app=desktop
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2015-12-07, 5:49pm
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Got Honey?
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Quote:
Originally Posted by losthelm
You may find yourself switching back and forth between the last two grits.
Are you changing directions, what type of compound are you using?
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I am using everything she sent in the glass package. The final is the felt wheel with her polishing compound
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2015-12-07, 6:24pm
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Senior Member
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Join Date: Dec 17, 2011
Location: Virginia
Posts: 484
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It looks like you are not getting out the pits and very fine scratches before going to the polishing compound. I use a Genie machine with 6 wheels to work mostly on stone but have worked with fused glass to make very smooth and shiny cabochons. You may need to spend more time on the medium and fine grits and work out all imperfections before you attempt to polish. Good luck.
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2015-12-07, 6:55pm
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Senior Member
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Join Date: Aug 31, 2008
Posts: 187
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Thanks for posting the link to the video. In your first post you said you start with the "fine diamond" wheel but she calls it the flex diamond. So now it makes more sense as the flex diamond is coarser than medium which is coarser than the very fine.
Many years ago when I learned to grind and polish the bottoms of blown pieces, we would dry the surface after each level of grit and inspect the ground surface. You want to see a perfectly uniform level of roughness. If there are still pits from the grit before, than it will never polish smooth. Then when you do the next finer grade, again inspect for smoothness/pits. It needs to be dry to see it properly (we used to use a compressed air hose to quickly dry the surface).
Do you have the cerium wheel as well?
I apologise in advance if I am telling you anything you already know. I hope you get it figured out, so that your purchase works for you.
Darrell
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2015-12-07, 8:38pm
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Phill
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Join Date: Mar 21, 2009
Location: Winnebago, MN
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Any possibility that what you are working on is devitrified and that each polishing pass only reveals lower layers of devitrification ?
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2015-12-07, 9:53pm
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Senior Member
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Join Date: Mar 07, 2011
Location: Northern California
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Are they round pits or long scratches? Pits would be an issue with the glass most likely bubbles. Scratches would suggest either not using each grit long enough or contamination grit to grit.
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2015-12-07, 10:11pm
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Loving learning
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Join Date: Oct 11, 2010
Location: Florida
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The tool she is asking about is way different than normal equipment. It is the specific tool that is the challenge I believe.
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2015-12-07, 10:41pm
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Senior Member
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Join Date: Mar 07, 2011
Location: Northern California
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Ive watched the video. Its just a grinder. Nothing revolutionary here. The issues are the same as any other grinding scheme.
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2015-12-07, 11:01pm
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Member
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Join Date: Jun 10, 2005
Location: San Antonio, Texas 78260
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I was wondering if the pits your are talking about is due to the glass you are using? Maybe a bunch of tiny bubbles that make it difficult to get a smooth surface... I think I would go to the last step - and see if the final polish will remove the pitted area, by smoothing it out.
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DeMarie
Glitzy Glass Studio
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2015-12-08, 7:59am
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Senior Member
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Join Date: Jun 17, 2005
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I find that if the polish compound isn't mixed well or wet enough that it scratches....It took me awhile to figure out a good mix.
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2015-12-08, 1:50pm
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Got Honey?
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Join Date: Aug 07, 2012
Location: Western Colorado
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Thank you all for you input.
I have been making these for almost a year in numerous combinations of colors. I use a wet belt sander on them with no problems. It is specifically the JT that I am having the problem with and specifically with the final polish. I was hoping that someone who bought the machine had some advice as the creator herself seems stumped.
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2015-12-08, 1:52pm
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Got Honey?
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Quote:
Originally Posted by wildwire
I find that if the polish compound isn't mixed well or wet enough that it scratches....It took me awhile to figure out a good mix.
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Shauna, The polishing compound is her own formulation, it is a stick and no water is used with it. Just a wool wheel. She has a cerium disk that you use water with but I get the same result with it and she says to use it at slow speeds which doesn't really make sense to me.
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2015-12-08, 4:03pm
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da General
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Lezlie, I have the JoolTool but only been using the metal discs. She did get a perfect shine on the glass cab when she demo it at the Gathering. Perhaps you can use whatever polishing compound you used before instead of what came with the JoolTool?
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Hayley
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2015-12-08, 7:51pm
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Got Honey?
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Join Date: Aug 07, 2012
Location: Western Colorado
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Quote:
Originally Posted by Hayley
Lezlie, I have the JoolTool but only been using the metal discs. She did get a perfect shine on the glass cab when she demo it at the Gathering. Perhaps you can use whatever polishing compound you used before instead of what came with the JoolTool?
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Thanks Hayley. It's just frustrating because we sat and watched her and I know she got a good polish while I have tried and tried and can't. I have come to the conclusion that I will just need to do the final on the WBS
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