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by DonMcClennen
Sat Jan 20, 2018 9:18 pm
Forum: Techniques and Tools
Topic: Recommendations for bench grinder?
Replies: 9
Views: 6515

Re: Recommendations for bench grinder?

Buy some 60 grit belts for your WBS... it will remove a lot of glass fast!!
by DonMcClennen
Wed Jan 17, 2018 6:02 pm
Forum: Techniques and Tools
Topic: Recommendations for bench grinder?
Replies: 9
Views: 6515

Re: Recommendations for bench grinder?

Do to the water needed for grinding this is NOT a reasonable approach. I would recommend you consider a wet belt sander to expand your capabilities. With a variety of belt grits you can grind and polish perfect bowl rims (square, round, oval, etc.) plus numerous other applications. A WBS will allow ...
by DonMcClennen
Tue Dec 26, 2017 9:29 pm
Forum: Techniques and Tools
Topic: How do I full fuse keeping the original shape...
Replies: 5
Views: 4191

Re: How do I full fuse keeping the original shape...

there is also the flip and fire option... if the new square piece is placed against the shelf with the original composition inverted on top it should pretty much retain it's square shape when fused in.. then you will have to re-flip and again refire!
by DonMcClennen
Fri Dec 08, 2017 3:55 pm
Forum: Techniques and Tools
Topic: cutting dichroic
Replies: 2
Views: 2658

Re: cutting dichroic

Score on the back to eliminate damaging dichro coating
by DonMcClennen
Tue Nov 28, 2017 4:17 pm
Forum: Techniques and Tools
Topic: Bullseye glass shrinkage after fusing
Replies: 3
Views: 3330

Re: Bullseye glass shrinkage after fusing

Yes that would also work if you don't have a WBS. An extra 1/2"of base glass on each of the 4 sides would be easy to score and remove.
by DonMcClennen
Mon Nov 27, 2017 2:31 pm
Forum: Techniques and Tools
Topic: Bullseye glass shrinkage after fusing
Replies: 3
Views: 3330

Re: Bullseye glass shrinkage after fusing

Shrinkage is based on volume of glass, not manufacturer... If the glass is not a uniform 2 layers thick you will get shrinkage! You have a few factors to deal with eg: top temp, top temp. hold time, amount and location of second layer design...... Your safest bet is to fire oversize and grind/polish...
by DonMcClennen
Wed Sep 27, 2017 3:18 pm
Forum: Kiln Casting
Topic: Troubleshooting
Replies: 3
Views: 5147

Re: Troubleshooting

It should not make any difference what's going on outside (rain, cold etc.) It's what's going on inside the kiln that counts! If all pieces migrated toward centre then I suggest you have some kind of vibration going on. Put just a few pieces back in and run a monitored test firing.. try to figure ou...
by DonMcClennen
Sat Sep 23, 2017 10:45 am
Forum: Techniques and Tools
Topic: edge fire polishing
Replies: 4
Views: 4464

Re: edge fire polishing

I'd guess you should be firing at a higher temp.
by DonMcClennen
Wed Sep 13, 2017 3:56 pm
Forum: Newcomer Forum
Topic: Kiln Shelf
Replies: 6
Views: 6180

Re: Kiln Shelf

First of all you don't have to dry the shelf primer between each coat. I usually do about 6 coats all at the same time alternating brushing direction each coat.. then dry (sit out in sun, or sit on top of kiln when your firing something else) Once it is dry run your dry hand over gently to reduce br...
by DonMcClennen
Thu Sep 07, 2017 10:04 am
Forum: Techniques and Tools
Topic: Should I switch to System 96?
Replies: 14
Views: 11918

Re: Should I switch to System 96?

"90" Bullseye has been the only reliable constant in the past few years. They support the art glass industry with research, competitions, publications, communication, etc. etc. I think your source is bogus!! The future of "96" is still a crap shoot!
by DonMcClennen
Wed Aug 30, 2017 10:55 am
Forum: Techniques and Tools
Topic: small crack in a fused piece
Replies: 8
Views: 6482

Re: small crack in a fused piece

Consider this a learning moment.. this crack WILL expand and the bowl Will break!.. Reheating, flattening, refusing, then reslumping, carries so many chances for disaster... but what have you got to lose other than time and $.... as for UV glue, it's still damaged goods!
by DonMcClennen
Sun Aug 20, 2017 10:44 am
Forum: Techniques and Tools
Topic: Firing Top and Sides, etc
Replies: 6
Views: 5795

Re: Firing Top and Sides, etc

I agree with, and have followed Jim's approach... for over 20 yrs. I think (Ibailey) you are complicating things by turning off and on selected elements for 99% of what we do in kilns.
by DonMcClennen
Fri Aug 18, 2017 11:24 am
Forum: Newcomer Forum
Topic: Cutting Very Thick Glass Slabs
Replies: 12
Views: 11174

Re: Cutting Very Thick Glass Slabs

You didn't answer the question.. "How thick"??
by DonMcClennen
Wed Aug 16, 2017 10:49 am
Forum: Techniques and Tools
Topic: Firing Top and Sides, etc
Replies: 6
Views: 5795

Re: Firing Top and Sides, etc

You will find that one solution/combination will not fit all the various types of firings! ... eg: full fuse, fuse to stick, slumping, bending, Drop outs..etc. Your going to have to adjust schedules for the results required, as I'm sure we all do. Only time and experience will give you the data you ...
by DonMcClennen
Wed Jul 26, 2017 9:41 pm
Forum: Techniques and Tools
Topic: 10" saw blade
Replies: 8
Views: 5529

Re: 10" saw blade

you won't be able to use a 7" blade as a stiffener on your 10" when you cut 2" material!
by DonMcClennen
Wed Jul 19, 2017 10:35 am
Forum: Techniques and Tools
Topic: Tall skinny vases- stability - how to display in gallery
Replies: 7
Views: 6848

Re: Tall skinny vases- stability - how to display in gallery

When viewing work in a "Gallery" it is safe to assume your glass art will not be handled by the patrons/viewers. Museum gel is meant to fasten the glass to a pedestal or shelf, not to a temporary base. Prospective purchasers must ask gallery staff for assistance. If this is more a retail s...
by DonMcClennen
Sun Jul 02, 2017 10:46 am
Forum: Kiln Casting
Topic: Removing kiln wash to apply Boron Nitride
Replies: 1
Views: 3708

Re: Removing kiln wash to apply Boron Nitride

The grid like sandpaper used by drywallers will make short work of removing kilnwash.
by DonMcClennen
Fri Jun 23, 2017 12:03 pm
Forum: Photos and Stuff
Topic: Working my way back to a passion
Replies: 7
Views: 8533

Re: Working my way back to a passion

This is a fine example of combing your accomplished techniques with new experiment to create something original.. Congratulations!! Develop some; then sell them real quick before the copiers start their nonsense!
by DonMcClennen
Fri Jun 23, 2017 11:51 am
Forum: Techniques and Tools
Topic: The load bearing capacity of glass - to bear its own weight
Replies: 10
Views: 7356

Re: The load bearing capacity of glass - to bear its own weight

I suggest you drill the holes big enough to allow a metal eyelet be inserted. These can be secured with a proper adhesive. This allows movement of the hanging cables to happen without causing abrasive stress on the raw glass at the hole.. Thicker (1/4") glass will accept 2 eyelets (one from eac...
by DonMcClennen
Sat Jun 10, 2017 1:56 pm
Forum: Techniques and Tools
Topic: Cracked as a feature
Replies: 4
Views: 4507

Re: Cracked as a feature

Leave a little space between shards(1/8")when glueing in place for base glass to fill in during fusing for design.

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Suite 700
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