# Question about Keith fire tube thickness
**URL:** http://forum.driveonwood.com/t/question-about-keith-fire-tube-thickness/7787
**Category:** General Discussion
**Created:** [April 12, 2024, 1:22am UTC](http://forum.driveonwood.com/t/question-about-keith-fire-tube-thickness/7787 "2024-04-12T01:22:21Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@rusty](http://forum.driveonwood.com/u/rusty)
#### Post date: [April 12, 2024, 1:22am UTC](http://forum.driveonwood.com/t/question-about-keith-fire-tube-thickness/7787/1 "2024-04-12T01:22:21Z")
Is 5/32 too thin for a keith gassifier fire tube. 12" tube. Should I double it up. Then it would be 5/16 thick. What say you.
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### Author:  [@ForbiddenTuna](http://forum.driveonwood.com/u/ForbiddenTuna)
#### Post date: [April 12, 2024, 1:26am UTC](http://forum.driveonwood.com/t/question-about-keith-fire-tube-thickness/7787/2 "2024-04-12T01:26:54Z")
Welcome Russell
If you haven’t already got the Have Wood Will Travel book, I’d highly suggest you do if you want to build a Wayne Keith style gasifier. It’ll lay it all out in an easy to understand way.
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### Author:  [@Wayne](http://forum.driveonwood.com/u/Wayne)
#### Post date: [April 12, 2024, 1:55am UTC](http://forum.driveonwood.com/t/question-about-keith-fire-tube-thickness/7787/3 "2024-04-12T01:55:07Z")
Hello Russell and welcome .
In my opinion 5/32 metal is too thin for a fire tube and would melt. By doubling up and using two pieces of 5/32 metal it would make the inside piece melt even faster 😒
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### Author:  [@rusty](http://forum.driveonwood.com/u/rusty)
#### Post date: [April 12, 2024, 2:28am UTC](http://forum.driveonwood.com/t/question-about-keith-fire-tube-thickness/7787/4 "2024-04-12T02:28:00Z")
Thats what i thought. Thanks Wayne.