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by David Jenkins
Fri Aug 31, 2012 10:16 am
Forum: Techniques and Tools
Topic: Scrap Tekta
Replies: 11
Views: 6928

Re: Scrap Tekta

@Faye: Do you pot melt it down? Or just stack it on a shelf and let 'er rip? What size (area) stones do you make?
by David Jenkins
Mon Aug 27, 2012 9:48 am
Forum: Newcomer Forum
Topic: MESH MELT
Replies: 23
Views: 19743

Re: MESH MELT

What we call "chicken wire" around here has very large (+1" ?) apertures, and is made of really skinny wire. Would be interesting to make a direct comparison of the results of using something with such dimensions against a mesh with much smaller apertures and/or a larger wire width:ap...
by David Jenkins
Sat Aug 11, 2012 7:10 pm
Forum: Techniques and Tools
Topic: New bubbles that weren't occuring before
Replies: 19
Views: 9842

Re: New bubbles that weren't occuring before

What are "bubbles" in the context of your cleaning regimen?
by David Jenkins
Sun Jul 29, 2012 9:46 am
Forum: Techniques and Tools
Topic: Copper inclusions with float glass
Replies: 4
Views: 3956

Re: Copper inclusions with float glass

@Bert:

OP said they had used a borax solution. Is there any special mixture or application technique for the solution that will encourage the red/copper color?
by David Jenkins
Sat Jul 28, 2012 10:15 am
Forum: Techniques and Tools
Topic: Uneven bowl slumping
Replies: 17
Views: 13462

Re: Uneven bowl slumping

You don't say whether you're leveling the glass before the slump - just the shelf and the mold. You said you had had previous successes - same kiln, shelf, and mold? Same (essentially) layup? Do you think the mold itself be made with a non-uniform slope? Pictures are always helpful. Also, can you gi...
by David Jenkins
Thu Jul 26, 2012 9:02 am
Forum: Techniques and Tools
Topic: Uneven bowl slumping
Replies: 17
Views: 13462

Re: Uneven bowl slumping

Didn't I read here once, long ago, that it might be helpful to bevel the bottom edges of the blank so that it could slip more easily without catching? Or did I just dream that up?

Also: Is the side that catches always in the same position, relative to kiln?
by David Jenkins
Wed Jul 04, 2012 8:58 am
Forum: Techniques and Tools
Topic: drop vase - strips separating when making blank
Replies: 6
Views: 4718

Re: drop vase - strips separating when making blank

I don't have a lot of experience on this, but I'm thinking you'll have a difficult time dropping three layers 10". My guess would be that you'll stretch the blank so thin you'll get holes. I seem to remember a heuristic that says you can drop 1" for the first 2 layers, and then an addition...
by David Jenkins
Sat Jun 23, 2012 9:06 am
Forum: Photos and Stuff
Topic: Simple lay up gives depth
Replies: 4
Views: 4035

Re: Simple lay up gives depth

How 'bout a picture of the fired result?
by David Jenkins
Fri Jun 22, 2012 8:49 am
Forum: Techniques and Tools
Topic: Choosing flat lap disks - type and grit
Replies: 17
Views: 13335

Re: Choosing flat lap disks - type and grit

I'll amend my previous post to add that the bowls we were working with had been dropped through a Ceramaguard (sp?) board and the "flaps" had been sawn off. The resulting bowl edges were already semi-flat, semi-smooth, and semi-parallel before we started hand grinding. (Please - no math ma...
by David Jenkins
Thu Jun 21, 2012 9:21 am
Forum: Techniques and Tools
Topic: Choosing flat lap disks - type and grit
Replies: 17
Views: 13335

Re: Choosing flat lap disks - type and grit

I wholeheartedly second what Cynthia says: We did a lot of grinding in a class I took recently at Hot Glass Houston, and I was amazed at how fast it went. We used three or 4 progressively finer grits, and each took just a few minutes. Cleanup was not all that hard. Only [minor] downside was that it'...
by David Jenkins
Tue Jun 19, 2012 9:01 am
Forum: Techniques and Tools
Topic: Choosing flat lap disks - type and grit
Replies: 17
Views: 13335

Re: Choosing flat lap disks - type and grit

I found the His Glassworks material to be very helpful. I wouldn't get a 60 grit disk until you know that you really need it. It's very aggressive, and you'll probably find that it produces some chipping where it can't be tolerated. I have one that I got with my initial inventory of disks, and after...
by David Jenkins
Sun Jun 17, 2012 9:01 am
Forum: Techniques and Tools
Topic: Ever seen THIS before?
Replies: 30
Views: 14653

Re: Ever seen THIS before?

Isn't kitty litter pretty much all bentonite? Look at the product label in some cheap brand and see if that wouldn't work for you.
by David Jenkins
Sat Jun 16, 2012 8:51 am
Forum: Techniques and Tools
Topic: Is this devit?
Replies: 6
Views: 4490

Re: Is this devit?

The devit that shows in the OP's pictures is in rectangular shapes - or so it seems to old eyes. Is this typical/normal? Or am I perhaps mistaking a reflection of some sort as the devit in question? Here's a screenshot where I've identified what I perceive to be a corner of one of the rectangles: 20...

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