To restore the native line in the repair of belts, straps, bags, small hook. But knitting is too big, and thin enough to make yourself uneasy. I propose to use an awl with a tiny hook of the needle of the sewing machine. Abrasive stone or diamond needle files, run the propyl side to lug, as shown in the figure. To make it easier to work, carved from duralumin rod pen-holder with clamping screw M3. Flash stitched previously, the materials in this tool is very simple: the minimum size of the hook makes it easy to go in any hole. However, to connect the new parts of dense or thick materials, not to break the hook, you first pierce them with a thin awl or with the same pen-holder conventional machine needle.