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by Greg Rawls
Sun Jan 13, 2019 8:55 am
Forum: Techniques and Tools
Topic: irritating news
Replies: 11
Views: 6276

Re: irritating news

Bert - very glad you are back! You are an ICON!
by Greg Rawls
Sat Dec 22, 2018 8:40 am
Forum: Newcomer Forum
Topic: Galvanized Steel
Replies: 4
Views: 4564

Re: Galvanized Steel

Heating galvanized steel in your kiln wont kill you, but there is a possibility of getting sick. The zinc will fume off which can cause a sickness called Metal Fume Fever which presents with generally non-specific complaints including influenza-like symptoms, fever, shaking chills, headache, and mal...
by Greg Rawls
Sat Oct 06, 2018 7:33 am
Forum: Techniques and Tools
Topic: Wetbelt sander belts breaking
Replies: 10
Views: 6013

Re: Wetbelt sander belts breaking

These belts are 41-1/2 x 3. One belt breaking would not be an issue, but every time I replace the belt from my old stash (and these are maybe 4-6 years old), they work for a few minutes then split right at the seam. Yep. Same exact problem. Had to buy new belts. But I cut up the old belts into smal...
by Greg Rawls
Fri Oct 05, 2018 7:49 am
Forum: Techniques and Tools
Topic: Wetbelt sander belts breaking
Replies: 10
Views: 6013

Re: Wetbelt sander belts breaking

These belts are 41-1/2 x 3. One belt breaking would not be an issue, but every time I replace the belt from my old stash (and these are maybe 4-6 years old), they work for a few minutes then split right at the seam.
by Greg Rawls
Wed Oct 03, 2018 7:11 am
Forum: Techniques and Tools
Topic: Wetbelt sander belts breaking
Replies: 10
Views: 6013

Wetbelt sander belts breaking

I have a bunch of belts for my wetbelt sander that are a few years old that are splitting at the seam after a few minutes of use. Consistently! Does the glue that holds the belt together have a shelf life? Anyone else had this problem?
by Greg Rawls
Tue Jul 03, 2018 6:49 am
Forum: Newcomer Forum
Topic: is spray A dangerous?
Replies: 12
Views: 9081

Re: is spray A dangerous?

Get yourself a MSDS for the chemical and read it. People need to do this for every chemical that they use so they know what to avoid and how to protect themselves when using it. This is anti-devit spray, right? I believe it contains lead. Even though skin contact is a route of exposure for lead, you...
by Greg Rawls
Thu May 17, 2018 4:27 pm
Forum: Techniques and Tools
Topic: Slumping Tempered Glass
Replies: 5
Views: 3690

Slumping Tempered Glass

I want to make some round bowls with sandblasted images. I'm too lazy to cut and finish the edges on 1/2" float glass, so I found a distributor for 12" tempered glass table tops that will work. My stupid question (because I think I know the answer): if I slump the glass at 1175 before sand...
by Greg Rawls
Fri Mar 02, 2018 8:05 am
Forum: Techniques and Tools
Topic: Is float glass food safe?
Replies: 3
Views: 2824

Re: Is float glass food safe?

Can't think of a reason why it wouldn't be food safe.
by Greg Rawls
Thu Feb 01, 2018 8:18 am
Forum: Techniques and Tools
Topic: Is BE black really a deep green?
Replies: 6
Views: 4363

Re: Is BE black really a deep green?

The black I used was from a scrape bucket so I guess the glass is 5-7 years old. I'm actually liking the color I got!
by Greg Rawls
Tue Jan 30, 2018 10:05 pm
Forum: Techniques and Tools
Topic: Is BE black really a deep green?
Replies: 6
Views: 4363

Is BE black really a deep green?

Is BE black really a very deep green? Reason I ask is I was doing a vitragraph. I mixed chipped BE black and Tekta white hoping for gray. All of the rods came out a sort of celery green from light to very dark. Thoughts?
by Greg Rawls
Wed Jun 28, 2017 7:09 am
Forum: Techniques and Tools
Topic: Ventilation
Replies: 11
Views: 8678

Re: Ventilation

Marty wrote:That's what I was asking- any experience with the desk top (ductless) extractors?


Nope. Always worked in industry with really BIG vent systems.
by Greg Rawls
Tue Jun 27, 2017 8:01 pm
Forum: Techniques and Tools
Topic: Ventilation
Replies: 11
Views: 8678

Re: Ventilation

Greg- Good to hear from you. I think the station fans have charcoal filters in them. I always thought that the lead fumes were the least of the problem. Soldering is about 700F, way below vapor points. However some of the lead casting groups have discussed this and the oxide issue was brought up: s...
by Greg Rawls
Tue Jun 27, 2017 7:30 am
Forum: Techniques and Tools
Topic: Ventilation
Replies: 11
Views: 8678

Re: Ventilation

Or you could put everyone in P95 respirators. Easier to wear and cheaper than P100 and almost as efficient.
by Greg Rawls
Tue Jun 27, 2017 7:02 am
Forum: Techniques and Tools
Topic: Ventilation
Replies: 11
Views: 8678

Re: Ventilation

Hey Marty - been a while! The main inhalation issue with stained glass is possible lead fume exposure. I've not looked at this for a long time. As I recall, there is not enough heat to create actual lead fume as the smoke created during soldering is from the flux and that is an acid gas. Most lead i...
by Greg Rawls
Fri Jan 13, 2017 8:19 am
Forum: Newcomer Forum
Topic: Coldworking/grinding leaded crystal?...
Replies: 3
Views: 3931

Re: Coldworking/grinding leaded crystal?...

There are a lot of variables here - how much available lead in the crystal, how much and how long you are grinding, how you are grinding, etc. My recommendation is to grind wet and wear a P100 respirator. Try to contain the dust and carefully clean your equipment when finished. Greg, retired Certifi...
by Greg Rawls
Sat Dec 31, 2016 8:16 am
Forum: Business Topics
Topic: Forgot Studio Name
Replies: 4
Views: 5325

Re: Forgot Studio Name

by Greg Rawls
Sun Oct 16, 2016 7:06 am
Forum: Techniques and Tools
Topic: Too much chipping
Replies: 17
Views: 13774

Re: Too much chipping

This is the blade I use - MK Diamond 153696 MK-303 Professional 10-Inch Diameter Lapidary Blade by .040-Inch wide by 5/8-Inch Arbor. Available from Amazon for $61. Cuts quick, does not eat up much glass, very little chipping and leaves an edge that does not require much cold work. My only complaint ...
by Greg Rawls
Wed May 25, 2016 7:00 am
Forum: Techniques and Tools
Topic: Emissions and studio safety
Replies: 3
Views: 3756

Re: Emissions and studio safety

by Greg Rawls
Fri May 06, 2016 7:57 am
Forum: Art, philosophy, and content
Topic: Intermediate Glass Fusing Class - Suggestions?
Replies: 3
Views: 6952

Intermediate Glass Fusing Class - Suggestions?

I've been asked to teach an intermediate glass fusing class at the local arts council. Something beyond the basic glass plate. This will be a 2 hour class so no cold working or followup. Suggestions???
by Greg Rawls
Tue Feb 09, 2016 8:41 am
Forum: Techniques and Tools
Topic: Sandblasting query
Replies: 2
Views: 2830

Re: Sandblasting query

If you blast the design on the back it will probably fade away especially when you apply mastic. Run an experiment and see. Firing to soften the edges is a good idea, but not necessary. When I make tiles I spray the back with white primer to hide the mastic and apply just like any other tile.

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Suite 700
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Phone: (336) 712 8003
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