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by Lauri Levanto
Tue Oct 28, 2014 11:03 am
Forum: Art, philosophy, and content
Topic: Silence
Replies: 26
Views: 22341

Re: Silence

Thanks Marty So it seems. I was not worried about missing answers, but missing newbie questions. I have noticed the same on my site in Finnish language. One of the most popular pages is Q&A, still only 0-1 new question per year. At the end of last year they closed the abandoned hospital building...
by Lauri Levanto
Fri Oct 24, 2014 10:54 am
Forum: Art, philosophy, and content
Topic: Silence
Replies: 26
Views: 22341

Silence

The forum has been quite silent recently.
Active topics last month has 4 entries, three of selling, one for buying.
No technical discussions, questions or even Spab.

What is the problem? Is this craft fading out like tiffany or is it only economical crisis that restricts business and hobby.

-lauri
by Lauri Levanto
Sun May 04, 2014 2:41 am
Forum: Jewelry Making
Topic: Can you recommend a great jewelry book for a newbie?
Replies: 4
Views: 6081

Re: Can you recommend a great jewelry book for a newbie?

The magless howto's are worth of a good look.
by Lauri Levanto
Sat Apr 12, 2014 3:58 am
Forum: Techniques and Tools
Topic: Rant about cooling.
Replies: 3
Views: 2472

Rant about cooling.

I have understood that theory of cooling, or more properly tradition of cooling comes from some charts Corning has published. Those were based on experience with glass blowing. A difference is made between single side cooling (bottles) and double side cooling (bowls and othe open forms). Corning pub...
by Lauri Levanto
Sat Apr 12, 2014 2:17 am
Forum: Newcomer Forum
Topic: Cutting curves
Replies: 10
Views: 5308

Re: Cutting curves

Nobody answered the question; how to get smooth and precise score freehand. I mean how to follow the marker line without wobbles. There are two answers, confidence and practice. Start with the practice until you get the confidence. The glass cutter is like a horse. If it feels that the rider is inse...
by Lauri Levanto
Wed Mar 19, 2014 6:41 pm
Forum: Newcomer Forum
Topic: relationship between thickness and brittleness
Replies: 7
Views: 4145

Re: relationship between thickness and brittleness

Somewhere I saw a value that the core and surface (or any two points in a piece) must be kept wthin 20C 36 F below the transition range. In annealing the delta is 5 C. There we are worried about permanent frozen in stress. In warming up we are worried about temporarily tolerable stress. Above transi...
by Lauri Levanto
Sat Feb 15, 2014 4:17 pm
Forum: Newcomer Forum
Topic: The importance of 750 degrees
Replies: 7
Views: 4380

Re: The importance of 750 degrees

The reason for 750 F (425C) is that annealing takes place in two stages. The first is annealing soak, it is only for cooling so that there remains no more than 5 C difference in temperature, that is 9 F, within the glass mass . The annealing proper takes place during F is small enough not to introdu...
by Lauri Levanto
Tue Feb 04, 2014 7:00 am
Forum: Newcomer Forum
Topic: Sticking stacked glass.
Replies: 5
Views: 2877

Re: Sticking stacked glass.

Morganica wrote:Try sifting down a separator--dry kilnwash, plaster of paris, alumina, that sort of thing. If you coat it well (and evenly) you should get separation without the expense of BN.


That is how windshields are made.
by Lauri Levanto
Mon Jan 27, 2014 11:59 am
Forum: Newcomer Forum
Topic: Sticky cabochons: shelf paper vs kiln wash again
Replies: 24
Views: 12134

Re: Sticky cabochons: shelf paper vs kiln wash again

Morganica wrote:"And we DRINK Cocacola?"


So do I, too.
And I even smoke tobacco.
There are plenty of dangerous stuff we consume, chili for example.
They kill slowly, but I am retired, no need to hurry.

Ps.
The decalcinating stuff used for kitchenware is much cheaper.
by Lauri Levanto
Sun Jan 26, 2014 9:46 am
Forum: Newcomer Forum
Topic: Sticky cabochons: shelf paper vs kiln wash again
Replies: 24
Views: 12134

Re: Sticky cabochons: shelf paper vs kiln wash again

For some works where I have considered the back side critical, I have"casted" the kiln wash. I take a sheet of float glass, clean it and apply car wax which I polish carefully. Then I cast a layer of gypsum. It will get an almost glossy surface. There gypsum plates i use for carving a patt...
by Lauri Levanto
Sat Dec 14, 2013 5:12 am
Forum: Photos and Stuff
Topic: Starfish
Replies: 4
Views: 3730

Re: Starfish

fantastic! What kind of glass do you use? Is it compatible leftovers? This type of work I have done using punty pint from a gassblower friend. It is clear glass with surface colour. When shelf melted to a blank the color forms thin veils within the blank. http://lauri.lsd.dk/lasi/galleries/lauri/kie...
by Lauri Levanto
Tue Dec 10, 2013 11:39 am
Forum: Techniques and Tools
Topic: Mounting Glass in a Shadow Box, Etc.
Replies: 8
Views: 6287

Re: Mounting Glass in a Shadow Box, Etc.

Excuse my poor English. What is a shadow box?
-lauri
by Lauri Levanto
Thu Dec 05, 2013 12:13 pm
Forum: Techniques and Tools
Topic: Double Curve Mold Base
Replies: 9
Views: 4811

Re: Double Curve Mold Base

I do not have that kind of persistence. I do make "custon kiln posts" of a slab of clay vedged under 3 sides of a mold.
by Lauri Levanto
Wed Nov 20, 2013 2:08 pm
Forum: Newcomer Forum
Topic: Annealing layers and other idiotic questions?
Replies: 4
Views: 2618

Re: Annealing layers and other idiotic questions?

Hello, I'm Lauri close to the other pole of earth. You are right that the last annealing is what counts. You can skip the previous annealings IF the glass does not break in free cooling AND in the next ramp up. If yoy have used precious time and material in the preliminary stages you will be sorry i...
by Lauri Levanto
Mon Oct 14, 2013 1:41 am
Forum: Techniques and Tools
Topic: Dictionary
Replies: 29
Views: 14554

Re: Dictionary

Sorry,
I did not notice that the link was badly broken
http://lauri.lsd.dk/lasi/liitteet/WGdict.html

Here it is tested

-lauri
by Lauri Levanto
Sat Oct 12, 2013 3:40 pm
Forum: Techniques and Tools
Topic: Dictionary
Replies: 29
Views: 14554

Re: Dictionary

Some nostalgia I happened to rerad the birth pains of Warm Glass Dictionary. It is still alive, byt apparently the only updated version is on my site http;&&lauri.lsd.dk/lasi/WGdict.html I am now translating parts of my site into Swedish. That will include an English to Swedish version of th...
by Lauri Levanto
Sat Oct 12, 2013 3:15 pm
Forum: Kiln Casting
Topic: How to polish a casted sculpture
Replies: 18
Views: 12859

Re: How to polish a casted sculpture

An alternative is to lightly sandblast the glass surface and then paint/dip/airbrush a coat of clear acrylic. This gives it a wet. shiny look. You have to sandblast first otherwise the acrylic will easily chip off. A good tip that leaves one nagging question. Is it faking? I mean that a glass piece...
by Lauri Levanto
Mon Sep 30, 2013 3:13 pm
Forum: Techniques and Tools
Topic: Continuing cracks- large glass! Why?
Replies: 24
Views: 8388

Re: Continuing cracks- large glass! Why?

can't proviede cues, but need one.
You said your thermocouple was 15 F off.
How to measure thermocouple calibration?

-lauri
by Lauri Levanto
Fri Sep 06, 2013 12:27 am
Forum: Kiln Casting
Topic: Fiberglass chopped strand mat material
Replies: 9
Views: 7102

Re: Fiberglass chopped strand mat material

Peter Angel wrote:Laurie,

What type of fibre paper do you use?

Pete


Thifire has very short fibers. 2-3 mm fiber papers leave soft blanket sfter firing.
I shread it to small patches. I make pulp of it for inner layer, for outer layer I
soak the patches in plaster and set around the mold.
by Lauri Levanto
Mon Sep 02, 2013 2:57 pm
Forum: Kiln Casting
Topic: Fiberglass chopped strand mat material
Replies: 9
Views: 7102

Re: Fiberglass chopped strand mat material

A variantof Peter's method is
I put some water and used fiber paper in a blender to get a fiber pulp.
That I use as Peter described.

nasty stuff. Use breathing mask and good gloves when you shred the used, soft fiber paper.

-lauri

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Suite 700
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Phone: (336) 712 8003
Email: wg@warmglass.com

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