Sheet Metal Wye Fitting Cutout T 4” x 4” x 4” Instructions Introduction This template is used to create a custom wye fitting for dust collection and HVAC applications. Retail price for Wye fittings can range from $20-$50 per fitting, depending on size. By using these templates, and common HVAC pipes found at your local home center, you can make a fitting for around $6 each. Materials Required • 2 foot section of snap lock pipe of appropriate diameter, 26 gauge. If you’re making a fitting with a branch of different diameter from the main pipe, you’ll also need a pipe of the size of the branch. For example, if you’re making a fitting for a 6”x 6” x 4” wye fitting, you’ll need a section of 6” pipe, and a section of 4” pipe. Do not use the 30 gauge found at some home centers, as it’s too thin for dust collection, and may collapse. • Tin snips. • Permanent magic marker. • Computer installed with Adobe Acrobat Reader and a printer. • Aluminum Duct Tape. NOT the cloth tape. Printing When printing this document, it MUST be printed at actual size. Adobe Acrobat Reader has the capability of scaling a document when printing, and those options must be turned off as shown below. If you are making more than one fitting, it may be helpful to print the template on heavier paper stock for durability and to make the tracing easier. Cut Out the Paper Template Cut out the template with a pair of scissors, and tape the pieces together where required. You want to cut out the white portion out, and keep the part which has the lines. The lines indicate sheet metal. Trace the Shape Tape or hold steady the template to the piece of sheet metal and trace the cut line onto the metal using a fine permanent marker. If you’re cutting out the hole in the main line, you should pay attention to the air flow. The air will flow away from the end of the Wye with the two ends, so you should orient the cut out to the air flow toward the crimped end of the sheet metal. Cut Out the Sheet Metal WARNING: These sheet metal pieces can be extremely sharp. Use a good pair of leather gloves to protect your hands. Using sheet metal cutters or tin snips, cut the shape out of the sheet metal pipe. Attach the Pieces Together Snap together the pipe to form your two pieces. Take a three small pieces of aluminum tape, and attach the branch line to the main line. Then finish the seal with more tape on the outside of the connection. If you want to seal the piece from the inside, that’s your option.
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