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2015-06-12, 4:56pm
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Sucks at being nice
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Join Date: Aug 18, 2006
Location: Black Forest, CO
Posts: 1,984
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Tips for shot glasses
I am trying to learn how to make shot glasses and just can't seem to get it. Anyone have favorite techniques or tips you would be willing to share? What is the preferred size of tubing? How do you get a nice thick bottom and keep it even? How do you get the rim to not look like crap?
On a positive note; after struggling with shot glasses making a nice spoon is a piece of cake!
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"Every Child is an artist. The problem is how to remain an artist once we grow up." - Pablo Picasso
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2015-06-13, 5:39pm
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
Posts: 3,002
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It's easier if you start with thick wall tubing, otherwise you'll want to condense down a length of tubing and be extra careful to make sure the wall thickness is uniform.
Pull a point, thicken and condense one end that you'll use as your bottom. Flatten that, then punty up with a hot seal; you don't want it to crack.
Constrict the other end with a necking tool, v-tool, or better, diamond shears. Get it down to about 1/2" in diameter, set some stress and crack it off, that should give you a mostly round and fairly clean hole.
tear off any extra glass on the lip, paddle flush.
Then heat and open using a graphite reamer or jacks.
This isn't the best video, but maybe it'll give you some ideas:
https://www.youtube.com/watch?v=HstzKpArUoA
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-Tom
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2015-06-14, 8:24am
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Sucks at being nice
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Join Date: Aug 18, 2006
Location: Black Forest, CO
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Thanks Tom! I may have to get some diamond shears to try. I have been doing the blow thin and tear off method and just can't get it as nice as I would like. I am getting better at melting in designs without messing up the tubing so there is progress.
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"Every Child is an artist. The problem is how to remain an artist once we grow up." - Pablo Picasso
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2015-06-14, 2:35pm
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
Posts: 3,002
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I sometimes will neck down on the edge of my torch mounted marver. I also have a butter knife clamped to my torch stand so I can use the back edge of it for making constrictions. Sometimes it's actually easier than the diamond shears.
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-Tom
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2015-06-15, 9:05am
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Marble Lover
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Join Date: Apr 16, 2012
Location: Broken Arrow, OK
Posts: 802
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Good info, Tom. Thanks.
-BEP
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Brian E. Parker aka BEPNewt
Lifelong glass lover, now getting to work with it. Using a Bravo on an M20 & Natural Gas ( inner ), Tanked O2 & Propane ( outer ).
Grew up near
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2015-06-15, 9:11pm
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Sucks at being nice
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Join Date: Aug 18, 2006
Location: Black Forest, CO
Posts: 1,984
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I'll try it with my marver and see how it goes. Thanks again!
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"Every Child is an artist. The problem is how to remain an artist once we grow up." - Pablo Picasso
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2015-06-22, 5:46am
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Sucks at being nice
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Join Date: Aug 18, 2006
Location: Black Forest, CO
Posts: 1,984
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The last attempt was better using the necking technique. I need to practice that to get it right but I muddled my way through it.
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"Every Child is an artist. The problem is how to remain an artist once we grow up." - Pablo Picasso
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2015-06-25, 9:22am
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He can do the origami
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Join Date: Nov 24, 2005
Location: Najin Oyate
Posts: 1,474
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For me, I start the neck down process with a mounted edge like the butterknife Tom mentioned or a V marver. After I get the spot constructed down most of the way, I use my diamond shears to neck down a bit further and induce stress. This provides me with a very clean constriction and then a very clean break. Generally very little clean up as I spin out or flare out my rim.
Otter
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2015-06-25, 9:30am
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Borovangelist
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Join Date: Jan 26, 2007
Location: Auburn, MA
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I get a lot of inspiration/direction from watching hotshop videos. We do very similar things, just on a smaller scale, so sometimes the pattern of steps they follow works for us as well. Not always, but sometimes 
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-Tom
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2015-06-25, 5:09pm
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He can do the origami
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Join Date: Nov 24, 2005
Location: Najin Oyate
Posts: 1,474
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Tom, I wish I could hit the "LIKE" button. I agree with what you said and often borrow hot shop techniques.
Otter
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