Tuesday, August 15, 2017

Glass fusing is NOT as easy as some may say.

Judy Martin, in the "Fused Glass Fanatics" group on Facebook, shared an article from HGTV.com titled "How to Make a Fused Glass Sculpture". If you're into fused glass (aka warm glass), this article reads like dark humor. If you've never worked with fused glass before, please don't follow these instructions. Or, if you do, photograph everything. Those of us who are laughing nervously at the HGTV article will be laughing hysterically at your exploits and expensive losses. Your choice.

The article lacks refinement in its "Materials and Tools" section. The "Steps" section begins weakly, but not necessarily wrong. It's half-way down the steps that a crucial step is missed and the next step can only lead to a costly error. Let's have a look at what's going on...

Materials and Tools:

"dichroic and iridized glass in various colors" 

With no mention of COE numbers. The "Coefficient Of Expansion" number tells glass artists which glasses can work with which. You should also look for glass that is "tested compatible" because COE is not the end-all-be-all of compatibility factors.
Why we're laughing: Glass of differing COE values is going to crack as the glass cools (bad) or break when it's sitting on your bookshelf (worse).  Either way, this article just cost you money: Pretty glass = Expensive glass

Why we're laughing: If you get your own kiln and follow these instructions, you now own a worthless kiln.  "Why" is later...

Why we're laughing:  We're not.  You're going to get the wrong file and cut yourself.  The list says nothing about a dust mask which is needed for "cold work".  So don't.

"circle mold"
Why we're laughing: You need a "spherical section mold".  Circle molds make nice round disks.  The only photo in the article indicates that you will be making a rounded object, but gives you no instructions on how to do this.

"(missing things)"
Why we're laughing:  No mention of "shelf paper" or "boron nitride spray" or anything else that will come between your molten glass and your kiln furniture or your "circle mold".  Molten glass is sticky stuff.  You are going to be placing an awful lot of glass pieces into your mold and screwing up everything it touches. Very expensive to repair.  You may have just totaled your kiln.

Steps 1-5 are only okay.  Photos would go a long way towards helping the reader.
Why we're laughing: No shelf paper.  You're on your way to ruin.

Step 6 is the "Holy Shit" step

Why we're laughing HYSTERICALLY: A) Unless you're firing fine glass frit, if you go from room temperature to 1500 as fast as possible, the glass pieces are going to shatter.  Not crack, but shatter.  Without shelf paper, that glass is everywhere on the floor of your kiln.  Own a clamshell kiln?  You may have just glued glassed it shut.
B) Eight hours at 1500 might be good if you're melting a cubic foot of glass.  For the project pictured, you can get away with less than 30 minutes at 1450.  Oh, and all that pretty dichroic glass turns to a muddy mess if you fire it for eight hours.
C) "Cool for 12 hours" can shatter your glass on the way down.  Now, all those glass puddles are fracturing.  Enjoy your sharp stuck wrecked kiln.

Step 7 is not a funny step.
It should not be done with a "file".  You need a special file with diamond grit.  Maybe a couple files.  And a dust mask or file it under running water.

Step 8 is almost as bad as Step 6
Why we're laughing: A) You're not told to fire each circle separately.  If you're reading this article for your first fusing project you may not have known this.
B) Heating straight to 1200 degrees is going to shatter your piece the same as ramping to 1500, only without the resulting puddles.  Still messy but the shards will be pretty.
C) Oh!  Almost forgot.  You didn't prep your mold.  You just ruined your $50 mold.  Ta-Da! 
D) Six hours should be 30 minutes.  For a wagon-wheel type of design, you may have already gotten a good slump after 10 minutes.
E) After six hours at 1200, a spherical slump is going to be much thicker at the bottom with thin walls.  All detail from your design will be melting towards the bottom of the mold. 
F) Again with the bad cooling step.  Your slumped piece is now shattered.

Steps 9-11
Will never be achieved by following the instructions in the article.  Here are the steps you'll likely encounter:
9) Cry
10) Call your kiln manufacturer for a repair estimate
11) Cry
12) Find someone who knows what they're doing and start all over under their supervision.

There you have it.  A recipe for broken glass and shattered dreams; empty wallets and mad spouses.  This article has three failures to inform that will result in you dealing with broken glass.  I wish I had a throw-away kiln to show you why.  Then even those of you with no knowledge of glass fusing would be laughing along with the rest of us.

Wednesday, December 16, 2015

Christmas Poinsettias

I haven't posted here in HOW LONG?

I've been getting into glass fusing. Last year, I made snowflake ornaments with pictures of family members on the points of the flakes.  It cam out very nicely. This year, it's poinsettia bowls.

I picked up the Creative Paradise Poinsettia Texture Mold (11.25-inches) and the Bullseye Classic Bowl mold (12.5-inches) off the web along with all the Bullseye frit and Tekta I would need for the project.  The problem is, I don't have a teacher and have to suffer accordingly.


My initial firings went badly.  I made a few critical errors all at once.  The photo to the left is one of two platters that had large eruptions.

1) Need more frit: The center of the mold is clear.  I didn't put any frit there.  So a big bubble formed.

2) On poor footing: I put the kiln furniture "feet" well inside the perimeter of the texture plate.  This alters both temperature and convection.  The photo at the top of this post shows better placement.

3) Poor fundamentals: I ramped too fast and squeezed in the wrong places.  My schedule didn't account a nice long bubble squeeze.  With so much frit and so many locations to trap air, you can't hurry this pattern.

4) Need MORE frit:  My third firing of the pattern produced a nice plate.  No eruptions.  My fourth firing (seen above) had three large eruptions.  I was being VERY exacting in my placement of frit.  Every section got frit and I kept them well separated.  Bad idea.


 The key is to use the scraps from your circular caps to make frit.  I got an Anraku frit maker and screens to create and sort frit.  I used two 12-inch square 3mm Tekta glass to make the 11-inch disks.  This meant plenty of scrap glass left over for frit.

I filled the areas of the mold with the colors I wanted (and clear in the center), same as before.  Then I followed up with clear frit on all exposed dividing lines between the colored areas.  I didn't want the cap glass disks to settle on any area of the mold.  Let the bubble squeeze step work its magic without any interference.

This is an on-edge photo of the design showing just how much frit I'm using.

Once I got a good firing, I cleaned the plate and readied it for slumping.

 Another plate prepared and ready to fire.


 The bowls (so far):

I hope to complete 4 more bowls before Christmas.  The first three bowls were wrapped in bubble wrap until I couldn't feel the edges, placed in boxes, and the boxes were wrapped in bubble wrap and placed in a larger box for shipping.  I hope they all make it to my family in California.

Many thanks to the people of Creative Paradise Glass!  I was able to bounce ideas off of them and receive very positive critical feedback on how to solve my eruption issues. They also helped me determine that my kiln may be running 25-30 degrees hotter at the highest temps.

Now to the schedules:

Fusing Schedule

Step Ramp Target Hold Notes
1 275 1100 15 Initial ramp and soak
2 100 1200 60 Beginning of bubble squeeze with plenty of time to do it.
3 50 1230 40 Slow ramp up to end of bubble squeeze
4 275 1430 5 I was going to 1450, but my kiln runs a bit hot. Your mileage may vary.
5 FULL 950 60 Annealing the glass. My kiln takes about half an hour to drop to this temp. No need to crash the temp.
6 80 750 10 Nice and slow.
7 300 120 0 We pick up speed here, but I think below 650 my temps are much slower than 300 degrees per hour.

Slumping Schedule:
Step Ramp Target Hold Notes
1 150 300 15 Just getting warmed up.
2 200 1100 15 Soak it in. Speed kills, so let's not stress the glass into the slump mold.
3 150 1225 10 It turns out, I'm fairly well slumped at 1225 already. The 10 minute hold is to make sure the "foot" of the bowl is well seated. The poinsettia textures are on the outside of the bowl, so I wish to avoid any wobbling of the bowl when it is used.
4 FULL 950 60 Same notes as fusing schedule.
5 80 750 10 &nbsp
6 300 120 0 DON'T YOU DARE OPEN THIS ANY SOONER THAN 120. (that message is for me. It seems the last 30-degrees of the schedule takes an hour or more and I'm impatient.)

Tuesday, July 26, 2011

Honey, Where's Our Elephant?

Pantry Scavenger Hunt

"Where's the Mac-n-Cheese?" I ask.

"In the pantry," she replies.

"What shelf? I don't see it!"

"Second shelf, right up front," she calls out from the next room.

I give up after searching for a couple of minutes. Damn thing is larger than a shoe box. If it's in there, I can't find it. We must be out. "We must be out. I can't find it."

"I just bought some. It's in there."

Her tone is changing. I'll defuse it. "Don't worry about it. I'll make something else." That should be fine. No need to get up. Pappa's in the kitchen and he's got it all under control.

I was in the process of starting up something else when there's a thud on the counter. I turn around and there's my wife, wide-eyed, silent and staring at me. There's a large box of Mac-n-Cheese on the counter.

"Uh, where'd you find it?" I ask.

"Right up front, where I said it was," and she leaves.

How is she so good at hiding things?

Monday, July 25, 2011

You Know You Want To

I'm thinking alligator

I don't care what you think it is, but I'm from Louisiana. I'm thinking that anyone around here with less than the usual number of fingers, toes, or appendages were dared to "Pet It!"

Either that, or this person runs an Information Technology department for very well organized chihuahuas.

Friday, July 22, 2011

Baby's In Black and I'm Feelin' Blue (NSFW)

Antique Shopping

I love antiquing. You never know what you will find. Here's a beaut that would look good in my man-cave. Only $250! It's a steal at twice the price. If only I had a man cave to hang her in a place where my fellow cavemen could come in and feel how smooth the velvet is...

And ridicule me for buying something I'd have to constantly dust.

Thursday, July 21, 2011


Who's going to fall for this one?

Saw this one near the office. Apparently this homeowner doesn't want to be bothered to hold a spot by putting an orange cone in the street; as many homeowners around the university do. A more pedestrian approach (by the student houses) is to put a chair or inverted trashcan in the street. But a FAKE handicap sign on a SPINDLY STICK?

This must have taken some thought. "I'll put up a sign to keep people from parking in front of my house. I'll purchase a sign. I'll put it on a FRIGGIN STICK and that'll convince people of its authenticity.


I'm not put out by this sign. I don't park this far away from the university. But, as Jacob Marley said "Mankind was my business! Their common welfare was my business!" I should pull it up to keep the bully homeowners from staking out what is not rightfully theirs.

Then again, its common to get your tires slashed by people as arrogant and ignorant as this one.

Tuesday, July 19, 2011

The Essence Of Soul

When I get to heaven

What were they looking for with this sign? Is this an existential component of my soul? Is it a music reference?

I think it's a culture reference.

What is soul? It's a feeling; it's a way of thinking; it's music that speaks to a culture; it's a train bringing all the best in Mo-Town music. It's all this and more. And you know what? It's animals too.

Except for that duck. He ain't soul. He's just too damned goofy.