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Re: lead free glass

Posted By: SVP Neon Equipment
Date: Tuesday, 21 June 2011, at 12:26 a.m.

In Response To: Re: lead free glass (Don Miner)

Have you tried flame annealing it on both sides of the seal immediately after you make the seal? With the lead-free you can use the appropriate big bushy flame without worrying about "smoking" the glass up.

> I have been doing 8 ' straight border tubes
> and had 5 out of 50 break about 1/8"
> from the weld. I clean the coating back from
> the factory end about 1/8". Make the
> weld, check for straightness, place tube on
> blocks above the bench. I have been doing
> them this way for 50 years and in the past
> three weeks, have had more weld breakage
> than in the past 50 years. I have talked
> with the people at EGL, and so far we have
> not been able the get to the root of it. Any
> thoughts? Thanks, Don

SVP Neon Equipment

Messages In This Thread

• lead free glass -- Don Miner -- Sunday, 19 June 2011, at 7:02 p.m.
  • Re: lead free glass -- SVP Neon Equipment -- Monday, 20 June 2011, at 12:20 a.m.
    • Re: lead free glass -- Don Miner -- Monday, 20 June 2011, at 11:13 a.m.
      • Re: lead free glass -- SVP Neon Equipment -- Tuesday, 21 June 2011, at 12:26 a.m.
      • Re: lead free glass -- David Ablon -- Tuesday, 21 June 2011, at 1:38 a.m.
      • Re: lead free glass -- Tom U. -- Tuesday, 21 June 2011, at 12:04 p.m.

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