Steps // How to Build a Copper Trellis
1 ×

Overview for Building a Copper Trellis

 
Step One // How to Build a Copper Trellis

Overview for Building a Copper Trellis

illustrated copper pipe trellis
Illustration by Gregory Nemec

Day-to-Day Timeline:

Saturday: Construct the frame (Steps 2–13).
Sunday: Make the legs, install the trellis (Steps 14–18).

Download and print the cut list and dimensions.

Cut List for Building a Copper Trellis:
1x scrap lumber. Cut to length (about 7 feet).
½-inch 90-degree cup x cup copper elbow fittings. Get 16.
½-inch three-way copper tee fittings. Get five bags of 10 fittings.
½-inch copper uprights. Cut to fit.
½-inch copper couplings. Cut to fit.
½-inch copper legs. Cut to fit.

 
2 ×

Draw the Template

 
Step Two // How to Build a Copper Trellis

Draw the Template

using a long straightedge to draw a line
Photo by Kolin Smith

Tape a sheet of paper to a worktable. Use a long straightedge to draw a line down its center the distance from the top to the bottom rung, based on a design of your liking. At the top of the line, draw a perpendicular line the same length as the interior dimension of your finial; at the other end, draw a perpendicular line the width of the bottom rung. Now make two more perpendicular lines equidistant between the first two, as shown, for the two middle rungs.

 
3 ×

Build the Jig

 
Step Three // How to Build a Copper Trellis

Build the Jig

drilling pilot holes through the scrap to secure it to the worktable
Photo by Kolin Smith

Cut a long scrap of wood, and, working along one side, line it up with the ends of the lines for the top and bottom rungs. Drill pilot holes through the scrap and secure it to the worktable with 1½-inch wood screws. Fix a second piece of scrap in a mirror image on the opposite side. Add a short piece of scrap between the two, positioning it ¼ inch above the line for the top rung.

 
4 ×

Lay Out the Fittings

 
Step Four // How to Build a Copper Trellis

Lay Out the Fittings

measuring the space between an elbow and the tee
Photo by Kolin Smith

Stand a tee fitting against the jig, centered at the intersection of the line for the top rung and the template's centerline. Stand an elbow fitting upright at each end of the line. The openings of all three fittings should be in-line. To determine your coupling length, measure the space between an elbow and the tee and add 1 inch to account for the stops, which are ½ inch deep on each fitting. Jot down the length of the couplings as you go.

 
5 ×

Mark the Couplings

 
Step Five // How to Build a Copper Trellis

Mark the Couplings

marking a length of copper tubing
Photo by Kolin Smith

Adjust the combination square to the coupling length, and use it to mark a length of copper tubing, as shown. Slip the tube cutter onto the tubing, line up the blade with the mark, and clamp the cutting wheel down. Spin the tube cutter in place, tightening it as needed until the piece is cut. Cut another one to the same length.

 
6 ×

Dry-Fit the Tier

 
Step Six // How to Build a Copper Trellis

Dry-Fit the Tier

fitting copper pieces together
Photo by Kolin Smith

Insert a coupling into each side of the tee, and slip the elbows onto the couplings' exposed ends, as shown. Place the assembly on the template line to make sure it fits within the jig. The tee should be flat on the table, and the elbows should be pointing up.

 
7 ×

Measure the Upright

 
Step Seven // How to Build a Copper Trellis

Measure the Upright

transferring a measurement onto a length of copper tubing
Photo by Kolin Smith

Place a tee where the centerline intersects the third rung, with its stem pointed toward the top rung. Measure between the two tees and add 1 inch for the stops. Transfer that measurement onto a length of copper tubing, as shown, to mark the upright that connects the two rungs.

 
8 ×

Cut the Upright

 
Step Eight // How to Build a Copper Trellis

Cut the Upright

cutting a length of copper with a tubing cutter
Photo by Kolin Smith

Cut the tubing, as shown. Fit the upright between the tees in the two rungs. Make sure the tee for the third rung lands on the line.

Tip: When using a tube cutter, tighten the knob one-quarter turn after each full rotation around the tube.

 
9 ×

Assemble the Third Rung

 
Step Nine // How to Build a Copper Trellis

Assemble the Third Rung

assembling the copper pieces to finish the rung
Photo by Kolin Smith

Stand an elbow at either end of the line for the third rung, against the jig, openings toward the center. Stand two more tees on the line, for the uprights in the tier below, centered in the space between the center tee and the elbows. Measure, mark, and cut four couplings of the same length to connect the five fittings. Assemble the pieces to finish the rung.

 
10 ×

Connect the Middle Rungs

 
Step Ten // How to Build a Copper Trellis

Connect the Middle Rungs

assembling the copper pieces to finish the middle rung
Photo by Kolin Smith

Cut two uprights the same length as the one in the top tier. Fit them into the tees of the third rung, put tees on the other end, and measure to the outer line at both ends, to get them parallel. Measure and cut a coupling to fit between the tees, and slip it into place, as shown.

 
11 ×

Finish the Rungs

 
Step Eleven // How to Build a Copper Trellis

Finish the Rungs

finishing the last copper pipe rung
Photo by Kolin Smith

Stand elbows at each end of the line for the second rung. Center a tee fitting between the elbows and the tees for the uprights. Cut couplings to connect the fittings, and assemble the rung. Cut the next set of uprights to extend to the bottom rung. Add a pair of tees between the elbows and tees for the uprights, to hold the legs. Measure, cut, and fit the couplings to complete the bottom rung.

 
12 ×

Glue the Pieces

 
Step Twelve // How to Build a Copper Trellis

Glue the Pieces

gluing the copper pieces together
Photo by Kolin Smith

Disassemble the side. Now, one connection at a time, apply a bead of super glue inside each tee—but not the elbows yet—and press the coupling into the shoulder for 1 minute. Glue together each rung assembly, then glue the uprights in place to connect the rungs of the first side. Cut three of each coupling, and build the remaining three sides the same way.

 
13 ×

Join the Sides

 
Step Thirteen // How to Build a Copper Trellis

Join the Sides

fastening the copper pipe rungs' sides together
Photo by Kolin Smith

Dry-fit the elbows on the side in the jig. Rotate the four along one side so that they're vertical, and apply glue to their open ends. Take an assembled side and fit it into the elbows, one rung at a time. Press the side in place until the glue sets, then glue and install the third side, too, as shown. Place the fourth side in the jig with dry-fit elbows, and glue and install the three-sided assembly to the elbows. Glue the last set of elbows one at a time, taking care not to break any of the bonds.

 
14 ×

Hammer the Legs

 
Step Fourteen // How to Build a Copper Trellis

Hammer the Legs

hammering the bottom few inches of the copper pipe leg flat
Photo by Kolin Smith

Use the tube cutter to make eight legs of an equal length—at least 12 inches so that they can be tapped securely into the soil. Rest a leg on the jig, and hammer the bottom few inches flat.

 
15 ×

Cut the Legs

 
Step Fifteen // How to Build a Copper Trellis

Cut the Legs

cutting a V-shaped point into the bottom of a leg with tin snips
Photo by Kolin Smith

Using the tin snips, cut a V-shaped point into the bottom of each leg, as shown; the point will make it easier to pound the leg into the soil.

 
16 ×

Install the Finial

 
Step Sixteen // How to Build a Copper Trellis

Install the Finial

installing the finial
Photo by Kolin Smith

Set the finial in place. Thread 16-gauge copper wire through the holes, wrap it around the copper tubing, and twist the wire with the pliers to secure the finial.

 
17 ×

Install the Legs

 
Step Seventeen // How to Build a Copper Trellis

Install the Legs

hammering a copper pipe leg into the soil
Photo by Kolin Smith

Select a spot for the trellis. Make a hole with a garden stake, then tap the first leg into the soil, as shown. Set the trellis on the first leg and use it as a guide to position the remaining legs. Tap them in place, adjusting their height as needed to get the structure to stand plumb.

 
18 ×

Guide the Vines

 
Step Eighteen // How to Build a Copper Trellis

Guide the Vines

wrapping vine around the completed copper-pipe trellis
Photo by Kolin Smith

Plant a vine at the base of the trellis and wrap it around the uprights, as shown. Every foot or so, tie the vine to the tubing with a wire plant tie. Check back periodically during the growing season, guiding the vine around the trellis and securing it with ties.

 

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