1 dm (for scale)The outline shall not be included in the cut out template.19×165 mmCenter of hole or eyelet (size for keystrap)= press studPress studs are place so that strap does loop over itself, but is bent so that it length is halved. That is, that other sides of the stud parts are on the outer side of the leather. When selecting press stud, keep in mind that you will occationally need to replace it; about every five years.You want the keystrap (these instructions will assume it's plain round leather) to be the length measured from the top of your shoulder to the bottom of your palm. Add some extra length for the knots and grip for tightening the knots (2 dm will suffice). When tightening the knots, use a slip-joint plier (your common tongue-and-groove plier is perfect for this) and really pull.
On the belt side, you want to make two overhand knots next to each other on the inside of the beltstrap, and one overhand knot on the outside of the beltstrap, to keep the keystrap in place.
On thekey side, you want to make three overhand knots next to each other, but in the middle one should be made around the keyring. So it's one knot to hold the keyring and two knots to keep that knot (which will be looser due to holding the keyring) from coming undone.