If you are using the staple gun plate idea you would put your metal plate under the carpet and staple down the edge.
How to finish rug edge.
Mark your final edge by drawing a line around the outside edge of your rug.
Using your glue gun fasten the tape to the underside edge of the rug.
This step is necessary for most finishing methods.
Set your carpet down pile up.
Trim the edges of the carpet remnant with a utility knife or a carpet knife so that each edge is clean and the overall remnant is the desired size.
Staple along the edge.
Use a small paintbrush to spread the substance evenly along the edge.
I use 1 1 4 for rug warp when i m doing a whipped edge you will have to experiment with this measurement if you are using another backing because the thicknesses of linen backings are not consistent.
Apply more glue in the groove between the rug fabric and the binder tape edging.
Fold all four fabric edges over on the wrong side of the fabric by three quarters of an inch.
Binding the edge of a carpet involves wrapping a strip of fabric which is generally made from either polyester or cotton around the edge of the carpet and stitching it in place.
Then sew the inner edge of the bias tape to the mesh covering the raw mesh edges for a neat finished backing.
Turn your rug face up on the work surface.
Place the cloth along the edge on top of the pile so the edge of the pile and the edge of the cloth are together.
If you want a traditional rectangular or square.
Squeeze a narrow bead of carpet adhesive or liquid resin along the first several inches of the raw edge.
Use a scrap of 2 by 4 wood to press the binding into the carpet until the glue cools.
In this video doris eaton author of a lifetime of rug hooking explains and demonstrates how to finish a rug using her method called the eaton edge th.
Make sure that each square of the mesh is secured to the bias tape.
Binding is typically the easiest and least expensive method of finishing a carpet edge.
Work your way around the carpet with the glue until your carpet edges are completely bound.
Beginning in the middle of a side slide peeled instant binder tape under the rug until only the rolled serged or rope edging shows against the rug.