Right Y T piece first created 05/09/06 - last modified 08/09/06 Page Author: Ty Harness

News: Development of the Right Y and T piece application has started. A heavily requested application by full version users and sheet metal workers. The TINK application allowed the pattern development of an oblique Y piece but a right Y piece has allows you to mitre circular hollow section which is useful for the heavy pipe boys and is generally much easier to make than the oblique Y. By setting the branch angle to zero then the geometry becomes a right T piece which is very useful for pipe welders who need a template to scallop and hole the pipes.

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Figure XX - A right Y piece with branches cut square.

Figure XX - A right Y piece but with the branches mitred. The mitre angle is half the branch angle.

Figure XX - On the left a right Y piece mitred and on the right an oblique Y piece

Figure XX - First 3D DXF export from RTY and a 3 into 2 manifold which looks more complex than it really is.

Figure XX - By Setting the branch angle to zero you can create a right T piece

The right tee piece is a popular development especially for pipe welders because it makes it easier to pierce the hole into the branch with a template to follow. If hole is not perfect then it makes the welding much more difficult. From figure XX the void created by the 2 patterns is the hole pattern.

Figure XX - Marking out some T piece connections by centre dotting through the paper template.
Using the Gas to hole the pipe for some freestyle Oxy-Acet cutting.

Stephen Darby at D&D Lincolnshire making various T pieces and Y pieces out of Diameter 168.3mm CHS by centre dotting through the paper templates. If you're making many off then steel templates would be more robust and even help with guiding a plate nozzle when cutting.

Figure XX - Tpiece prepped up and tacked for welding