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Lining Triangular Bag


KNITTING RESOURCES

Lining a Triangular Bag

Instructions for Nonibags
By Nora J. Bellows

NOTE 1: Please look over all of the instructions before getting started.

NOTE 2: Handles can be installed either before beginning the lining process or at the end before actually sewing the lining into the bag.

NOTE 3: All embellishments should be attached to the bag before sewing in the lining.

NOTE 4: Rectangular bag lining instructions are more detailed than this set. You may want to look them over before starting, especially if you have questions about folding the top of the lining or installing a snap closure.


Our lining adventure begins by measuring the bag, Figure 1. For triangular bags, inside dimensions can be tough to obtain. That's OK, measure the outside dimensions and just subtract the thickness of the felt as follows:

L_bottom = L_bottom_outside - 2(Thickness)
D = D_outside - 2(Thickness)
H = H_outside - Thickness
L_top can be measured directly

Figure 1 - Measuring a Triangular Bag

Figure 1 - Measuring a Triangular Bag

Now use the dimensions of your Nonibag to determine the size of the lining, Figure 2.

Figure 2 - Determining the Size of the Lining

Figure 2 - Determining the Size of the Lining

First use marking chalk to draw the inner rectangle (on the wrong side of the fabric, of course). Next, draw the centerlines (C/L) and use these to construct the rectangles and trapezoids. If in doublt, err on the side of a little extra fabric. Finally, give yourself a 1/2 in seam allowance on all sides except (what will become) the top. There, leave 1 in.

The drawn pattern is shown in Figure 3 by itself and in Figure 4 next to the bag bottom. The cut-out lining is shown in Figure 5.

Figure 3 - Drawn Pattern for the Lining

Figure 3 - Drawn Pattern for the Lining

Figure 4 - Pattern with the Bag Bottom

Figure 4 - Pattern with the Bag Bottom

Figure 5 - Cut-out Lining

Figure 5 - Cut-out Lining

NOTE: When using brokades or other fabrics with a directional design, one of the trapezoids will need to be a separate piece. Otherwise, the design will be upside down on one side of the bag. In this case, just add another inch to the vertical dimension in Figure 2 to have additional 1/2 in seam allowance on both pieces. Sew together to form the complete pattern of Figure 5.

While we have the pattern laid out in front of us, why not cut out the stiffener, Figure 6? Leave as four separate pieces.

Figure 6 - Stiffener

Figure 6 - Stiffener

Now is a great time to sew in a pocket, Figure 7, on the "right" side of the fabric.

Figure 7 - A Pocket

Figure 7 - A Pocket

Next, fold the lining up and pin together into its actual shape. Press the folded edges and top-stitch the seams, Figures 8 and 9. Do not sew the top one inch (see below). Of course, the wrong side of the fabric should be facing outside.

Figure 8 - Press the Edges and Top Stitch the Seams

Figure 8 - Press the Edges and Top Stitch the Seams

Figure 9 - Closer View of the Seams

Figure 9 - Closer View of the Seams

Press the extra fabric of the seam allowance as shown in Figure 10.

Figure 10 - Press Extra Fabric of the Seam Allowance

Figure 10 - Press Extra Fabric of the Seam Allowance

Sew in the stiffener pieces, Figure 11. They can be bent to get them inside the bag. Do not sew along the top if installing a closure.

Figure 11 - Sew in the Stiffener

Figure 11 - Sew in the Stiffener

If you have not yet attached the handles to your bag, now is the time to do it. Then test fit the lining into the bag. It should be too tall and sticking out of the top. Measure how much extra you have, fold to the outside, and press. This is why you left the top inch un-sewn above. If you did sew it all the way, you will need to undo some of the stitches to be able to fold the extra fabric.

If using a magnetic closure, cut small slots in the lining and in the stiffner. Insert the tabs of the closure through the lining and the stiffener and bend outward (see Figure 22 in the Rectangular bag lining instructions ).

Place the lining back into the bag and hand-sew along the top edge. My finished product is shown in Figures 12 - 14. Here the handles had hardware that allowed them to be installed after the tabs were sewn in. Usually, the handle is installed together with the tabs -- see Handles 101.

Figure 12 - Finished Lining and Handle Tabs

Figure 12 - Finished Lining and Handle Tabs

Figure 13 - Finished Bag

Figure 13 - Finished Bag

Figure 14 - Finished Bag

Figure 14 - Finished Bag

Congratulations -- your Nonibag is finished inside and out!