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| Tips, Techniques, and Questions -- Technical questions or tips |
2012-02-11, 9:49am
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aka Pele's Fire
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Join Date: Sep 12, 2007
Location: Decatur, MS
Posts: 193
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Tool for cutting really large murrini
I have been working on really large murrini pieces....so far just practice and I have a long way to go before I master this technique. I can't seem to find anything to cut my murrini pieces with to put them in the holding kiln to be picked back up later. My nippers are just not large enough to go around the bundle and I don't have the hand strength. If anyone has ever taken a class with Loren you can visualize what I am talking about. Any suggestions on a tool that might help?
T
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On the eight day, God created fire.....he created big, big, blazing fire.
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2012-02-11, 11:46am
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Senior Member
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Join Date: Jan 29, 2009
Posts: 1,958
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For the large pieces it is pretty hard to 'nip' them off with rod nippers or cutters so I think going to a rock saw or glass saw would be the way to go. You lose the width of the saw blade but you get a nice cut. When I took the course with Loren Stump in Edmonton we used a rock saw that was cooled with water. Just watch your fingers. 
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2012-02-11, 1:05pm
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aka Pele's Fire
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Join Date: Sep 12, 2007
Location: Decatur, MS
Posts: 193
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I have a rock saw for the finished product. I am talking about when you are making murrini components and they are still hot. You want to be able to cut them into pieces so they can then be picked back up from the kiln for the next pull in the sequence. Does this make sense?
T
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On the eight day, God created fire.....he created big, big, blazing fire.
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2012-02-11, 2:20pm
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Senior Member
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Join Date: Jan 29, 2009
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Yes that makes sense. What we did in the class is made all the components and allowed them to cool then cut them, then brought them up to temperature in the kiln then put them together in the torch don't know what to recommend for the way you are doing them.
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2012-02-11, 2:44pm
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Senior Member
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Join Date: Jan 23, 2006
Posts: 1,229
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use nippers you can hit it with something
NOT the wheel type
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2012-02-11, 5:00pm
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Senior Member
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Join Date: Jan 03, 2009
Location: ohio
Posts: 453
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I use that score tool on large boro rods. I'm not sure what it's called though....
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Catherine Napier Designs
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2012-02-13, 4:31pm
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Join Date: Aug 01, 2005
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I do this sort of work a lot. If your pieces are too big to get nippers around then you'll probably have to take the long road and cool them in the kiln, cut with your saw and then reheat for the next step. If you can get your nippers over them the just put one side of the handle down and give the other side a whack. It takes more time but sometimes you just have to cold cut some pieces.
Robert
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Robert Simmons
(Former) Director for Bead Donations
Beads of Courage, Inc.
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2012-02-13, 5:54pm
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aka Pele's Fire
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Join Date: Sep 12, 2007
Location: Decatur, MS
Posts: 193
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Thanks guys for the advise. Sometimes there just isn't a short cut.
T
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On the eight day, God created fire.....he created big, big, blazing fire.
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2012-02-14, 10:21am
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Senior Member
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Join Date: Aug 17, 2011
Posts: 274
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I have tried to cut corners and break them while they are still hot and end up burning myself or breaking half the cane i just pulled. Diamond saw all the way
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2012-02-15, 10:40am
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Hey ma I'm on South Park
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Join Date: Jul 08, 2007
Location: Vermont
Posts: 761
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There is a tool for cutting large canes glass blowers use a Old Tool File ground to an edge and mount it with a strike plate and springs with they bash with a hammer it cuts 1.5 to 2" bar that they use for color and for more precision we have a modified (arbor press) I think that's what it's called with carbide blades that meet... there are limitations as to the thicknesses and the precision of the cut with these quick options
I can post pic's if you'd like to see them.
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Marta
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2012-02-15, 11:32am
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aka Pele's Fire
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Join Date: Sep 12, 2007
Location: Decatur, MS
Posts: 193
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Marta, I would love to see pics.
T
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On the eight day, God created fire.....he created big, big, blazing fire.
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2012-02-15, 12:58pm
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Junior Member
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Join Date: Apr 08, 2009
Location: Indiana
Posts: 4
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When building a murrini it can quickly get too large if not careful. So may be, try to use smaller components for the finished item. But watch out for component to component size proportions with regard to finished item
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2012-02-16, 12:00pm
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Hey ma I'm on South Park
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Join Date: Jul 08, 2007
Location: Vermont
Posts: 761
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Murinni chopper
It has been a long time since I have posted pic lets see if it works.
ok well... They are side ways
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Marta
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2012-02-16, 12:40pm
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Senior Member
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Join Date: Jul 30, 2005
Location: in the trees with the squirrels and the nuts
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Where did these tools come from? Are they still available.
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2012-02-17, 7:28am
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Hey ma I'm on South Park
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Join Date: Jul 08, 2007
Location: Vermont
Posts: 761
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These were Made by my hubby the Arbor press it's self you can find at Mcmaster type places even yard sales sometimes and then modified by welding the cutting blade (carbide steel) to the chopping bit there is some guy out there who makes them but they are way overpriced at $2000 a pop
The color bar chopper? Charlie Correll of Corell glass might be able to make you one tell him it's the one he uses. he might even be willing to make the other one as well
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Marta
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2012-02-17, 7:46am
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old fart
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Join Date: Apr 18, 2006
Location: st paul mn
Posts: 778
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draw your murrini down to a smaller OD on the torch. use 2 clear rods, as punti's, heat up the murrini and stretch it to a smaller, more easily cut diameter. preheat the murinni up to 1100F before adding the punti's to keep it from cracking when introduced to the flame.
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Mark Wilson
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2012-02-17, 12:05pm
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Ancient Primate
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Join Date: Jan 05, 2012
Location: St. Louis
Posts: 44
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Depends how serious you are about cutting really large canes.. In the hot glass world they use these but they also melt 400lbs of glass at a time...
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