Fabric Glue Pen with refill.
Easy to use, just twist to expose more glue stick.
No more fiddling with pins and trying to sew around them!

Just run the glue pen along the fabric edge, hold the pieces together and you have a temporary bond. Goes on coloured, dries clear. Washes out and will not gum up your needle.
 
Blue in colour for ease of application: dries clear!
Water soluble.