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by Lauri Levanto
Mon Sep 02, 2013 2:47 pm
Forum: Techniques and Tools
Topic: what would happen if
Replies: 6
Views: 4536

Re: what would happen if

I have done a lot of "heap melt". Stacking a pile of scrap on the shelf - without dams - and let it melt to an irregular puddle. http://lauri.lsd.dk/lasi/galleries/lauri/kierratys.php In those works I have used punty pint from glass blowers. They are thumb size bits of clear glass with som...
by Lauri Levanto
Fri Aug 23, 2013 3:48 pm
Forum: Techniques and Tools
Topic: Chart for temperature + time = same results
Replies: 8
Views: 4306

Re: Chart for temperature + time = same results

Warren writes what is pretty close how I think. You can make a controlled series of experiments and produce a curve of heat work. With better equipment and more scientific rigor you may end up with a formula temperature vs viscosity. That may get a bit closer. There remains one open question *how th...
by Lauri Levanto
Sun Aug 18, 2013 1:02 pm
Forum: Business Topics
Topic: Website
Replies: 8
Views: 5845

Re: Website

I think there is one MUST. That is ease of navigation. Net readers have no perseverance. If I do not see it here and now, I try elsewhere. -lauri edit: My site is some 300 page tutorial (mainly in Finnish). The most comprehensive tutorial in our language. The statistics show: - Average visit duratio...
by Lauri Levanto
Sat Aug 03, 2013 10:29 am
Forum: Newcomer Forum
Topic: full fuse disaster
Replies: 15
Views: 13810

Re: full fuse disaster

I recently fired an 8"x12" single layer of spectrum 96 glass using the tack fuse preset on my kiln. I have used this setting many times without a problem. When I removed it from the kiln [1] it had broken into 3 pieces. [2] I then placed the three pieces onto a 96 clear sheet, filled in t...
by Lauri Levanto
Sat Jul 06, 2013 11:25 am
Forum: Techniques and Tools
Topic: Using Photo Fusing Paper for the first time
Replies: 9
Views: 7232

Re: Using Photo Fusing Paper for the first time

Someone provided a simple test.
before risking decal paper, test print on ordinary paper.
Set it in fire. If the ink stays during burning, it stays also i the kiln.
by Lauri Levanto
Thu Jun 27, 2013 7:04 am
Forum: Techniques and Tools
Topic: Iridised glass which way up
Replies: 9
Views: 5324

Re: Iridised glass which way up

The question : should i treat the unfused glass that will be the woven glass as 3mm or should i treat it as 15mm as this is the height of the top of the bends to the bottom The reason why thick glass has longer times is simple. It takes time when the heat traverse a longer distance within the glass...
by Lauri Levanto
Sat Jun 01, 2013 8:25 am
Forum: Newcomer Forum
Topic: Sulfur bearing? - Copper bearing?
Replies: 7
Views: 5575

Re: Sulfur bearing? - Copper bearing?

1. Take seriously the Haleybach warning! 2. I try to keep a reactivity list on my site http://lauri.lsd.dk/lasi/mater/be-col-eng1.html I try to keep it updated - now it is lagging :-( behind the Notes column there are more info. All user experience is more than welcome there. Don't hesitate to submi...
by Lauri Levanto
Sat Jun 01, 2013 8:09 am
Forum: Techniques and Tools
Topic: Glass separation
Replies: 14
Views: 6772

Re: Glass separation

I do not think COE changes with years. I have suffered recently of temporary incompatibility . The piece had a large base of Tekta. On top was fused a 4x7" oval of 1808 light sky blue tint. The blue absorbed readily the low infrared around 450 C (=ca850 F) while Tekta lets it go trough. The hav...
by Lauri Levanto
Thu Apr 11, 2013 12:19 pm
Forum: Newcomer Forum
Topic: slumping molds
Replies: 6
Views: 3755

Re: slumping molds

Isn't it easier to take a plaster master mold and model a new clay mold with it?
That way you can eat and save your plate.
by Lauri Levanto
Sat Apr 06, 2013 1:35 am
Forum: Techniques and Tools
Topic: White decal or other images
Replies: 3
Views: 2285

White decal or other images

I have a project where I need a few copies of a white dove fused on/between clear. The spread wings have fine details. something like this http://4.bp.blogspot.com/-2zwNWOMnTEs/TyqtYhQBw2I/AAAAAAAAFDQ/vl_u5gSJG-Y/s1600/white-dove.JPG Of course I will use my own design variant. Etching on Tekta did n...
by Lauri Levanto
Sat Mar 30, 2013 2:08 pm
Forum: Techniques and Tools
Topic: Arranging glass on shelf
Replies: 16
Views: 7469

Re: Arranging glass on shelf

To test your inks
print on normal printing paper.
Lit the paper i the air.
Look thr script, if it is visible when the paper turns to ash, the ink will stau in the kiln, too.
by Lauri Levanto
Thu Mar 14, 2013 4:27 pm
Forum: Newcomer Forum
Topic: Whaddya think happened to this?
Replies: 7
Views: 3626

Re: Whaddya think happened to this?

As I mentioned, the black is softer than the whitw.
In addition the black absorbs more radiation, while the white reflects.
So the white snowman kept the center of base glass cooler and thus increased the stress.
by Lauri Levanto
Thu Mar 14, 2013 12:00 pm
Forum: Newcomer Forum
Topic: Whaddya think happened to this?
Replies: 7
Views: 3626

Re: Whaddya think happened to this?

The answers above I trust. In addition I made an interesting observation. The shock was strong, moving the base glass apart. It seems to me that it happened at the upper range of initial warm up. As I understand your picture, the head was not yet fused, and slid into the break. The arms were fused a...
by Lauri Levanto
Tue Mar 05, 2013 9:30 am
Forum: Techniques and Tools
Topic: Recycle Fiber Paper
Replies: 3
Views: 2378

Re: Recycle Fiber Paper

The only way I have re-used fiber paper is to put it in a blender. The pulp I use to strengthen plaster molds, like chopped glas fiber is recommneded.
-lauri
by Lauri Levanto
Thu Feb 21, 2013 5:14 pm
Forum: Techniques and Tools
Topic: Drying Wood in Kiln
Replies: 12
Views: 6487

Re: Drying Wood in Kiln

rosanna gusler wrote:huh. there was also a green wood chair making class. pretty cool stuff. r.


I can't even imagine how te joints can be made in green wood. The different directions have so different contraction.
by Lauri Levanto
Thu Feb 21, 2013 11:23 am
Forum: Techniques and Tools
Topic: Limit timer for kiln
Replies: 10
Views: 5505

Re: Limit timer for kiln

here, Far North where I live, we use to pre-warm the car before using it. For that purpose the car equipment stores and electrical stores provide a simple timer. It sits between the outlet and plug. It has a 24 hour clock and with small tabs you mark when the current is permitted. You may even provi...
by Lauri Levanto
Thu Feb 21, 2013 11:08 am
Forum: Techniques and Tools
Topic: Drying Wood in Kiln
Replies: 12
Views: 6487

Annealing wood ?

Once I watched a "chain saw artist" work. He made quite intricate things. His material was fresh spruce. When wood dries, it tends to split. His solution was to work in batches. Between sessions he covered the wood with glue. I compare it to annealing. Sealing the recently worked surface, ...
by Lauri Levanto
Tue Feb 05, 2013 5:28 pm
Forum: Techniques and Tools
Topic: Retarding plaster set
Replies: 9
Views: 7405

Re: Retarding plaster set

At our sculpture glass skimmed milk was used, also diluted PVA glue.
I have no personal experience with these.
-lauri
by Lauri Levanto
Wed Jan 23, 2013 3:35 pm
Forum: Techniques and Tools
Topic: kiln adhesive paper
Replies: 7
Views: 4115

Re: kiln adhesive paper

Barry Kaiser wrote:Doing my Glass cloisonne, I use 3M Spray adhesive on thinfire to keep the wire from moving around when laying it up. Worked fine. Easy to apply.

Barry


I have also used 3M contact glue spray. It is easy to lay patterns on when it is sticky. Burns beautifully off.
by Lauri Levanto
Sun Jan 13, 2013 3:25 am
Forum: Techniques and Tools
Topic: plaster
Replies: 13
Views: 6600

Re: plaster

Thanks Peter,
as a self tought, or really by reading a lot.
I have had trouble with the clay slip, because i had not learned
the "dunk in water phase.

-lauri

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Warm Glass

2575 Old Glory Road, Suite 700
Suite 700
Clemmons, NC 27012
Phone: (336) 712 8003
Email: wg@warmglass.com