John Schwochert


Proto-1 Manufacturing LLC
10 Tower Road
Winneconne, WI 54986


Phone: 920-582-4491
Contact via email
notching options hole saw

Notching options

April 26, 2010

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While most fabricators could probably name three methods for notching tube, they actually have six choices. Understanding the advantages and disadvantages of each is the first step in selecting one.

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marman bead.jpg

Making a 20-degree Marman bead

July 20, 2009

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Two forming methods can make a bead for an airtight seal on a metal tube: rotary (spin) forming and progressive ram forming. Each has advantages and disadvantages in bead profile, cycle time, amount of wall thinning, and so on.

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