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Title: Homebrew CHIMNEYs for 4-400 & 3-500 tubes - DIY method Post by: WBear2GCR on March 25, 2006, 10:35:55 AM Here's a way to make chimneys for 4-400 or 3-500 series tubes, can be applied to most tubes if you can find the appropriate bit of glass jar! The only downside is that it is NOT tempered glass - however it should work just fine as long as ur blower works ok and you don't get a huge differential in temperature in the glass itself. Usually there's no problem, and if one cracks you can just replace it.
http://www.bearlabs.com/ARCH/HENRYWEB/HENRY4.html _-_-WBear2GCR Title: Re: Homebrew CHIMNEYs for 4-400 & 3-500 tubes - DIY method Post by: KB2WIG on March 25, 2006, 04:30:38 PM Looks ohtay... any thoughts of tempering the glass?? klc
Title: Re: Homebrew CHIMNEYs for 4-400 & 3-500 tubes - DIY method Post by: K1JJ on March 25, 2006, 04:48:08 PM That's a very slick way to cut the glass - using a heated nichrome wire wire with a Variac.
The chimneys look excellent. Good thinking. T Title: Re: Homebrew CHIMNEYs for 4-400 & 3-500 tubes - DIY method Post by: WBear2GCR on March 26, 2006, 09:31:14 AM how do one temper glass?? ??? ::)
I'm game... ;D _-_-WBear2GCR Title: Re: Homebrew CHIMNEYs for 4-400 & 3-500 tubes - DIY method Post by: N0WVA on April 01, 2006, 09:57:10 PM This works good. I made one out of a pickle jar for my 4-1000. I pulled the nichrome wire out of an old headlight switch ( used to dim the dash lights).No problem at all with the non-tempered glass.
Title: Re: Homebrew CHIMNEYs for 4-400 & 3-500 tubes - DIY method Post by: wavebourn on April 03, 2006, 04:44:06 PM how do one temper glass?? ??? ::) Easy! ;D Heat it up, and as soon as it is liquid cool down really fast. That's it. ;D |