It is assumed...
...that the stick maker knows the basic terminology of the craft, understands what is meant by the terms: handle, shaft, collar, rodding, spigot, ID, OD, bore, inset/flush, sleeved, etc.
1. How collars are measured.
If you take a look at the picture to the right, it shows where I measure the collars. Depending on how you intend to install the collar, the priority of the measurements in your decision making process will change.
2. The Sleeve.
If you are sleeving a joint, as shown in the picture on the left, the bore size (Bore ID in the first picture) needs to be the same as the joint you are covering. The more 'rounded' the top and bottom ends of the collar are in this situation, the better the collar looks once in place. The joint and collar are glued up, the rod is installed into either the shaft or the handle, the collar is slipped over the outside, and then the other half of the stick is pushed into place between the two until it seats nicely. The joint ideally wants to be centered inside the collar for optimum strength.
3. Inset Handle and Sleeved Shaft.
A collar can be installed on a handle with a spigot as shown in this illustration. The top OD of a
half-inset collar lies flush with the OD of the handle itself, but sleeves the shaft. This is useful
where applying a collar to a handle with a larger diameter than the shaft itself, and is a further
option in the 'reducing collar' situation. Typically, the difference in diameter would not be more
than 5mm or so, or the finished stick will look unbalanced.
Glue up the handle and shaft joints and the inside of the collar. Be sure to put glue on the top edge of the collar. Install the rod in the handle, position the collar so that it lies flush against the spigot shelf on the handle, and slide the shaft into place over the rod and into the collar. For optimum strength, the place where the shaft and handle meet should be exactly in the middle of the collar, and the edges should touch, as shown in the image.
4. Inset Handle and Shaft.
Insetting the collar fully into both the shaft and the handle gives the best collar-related strength, as the surface of the joint is increased by the width of the shelf on both parts. The joint still requires rodding. This type of installation suits both 'ball' handed and 'crook' handled sticks, and looks very neat. Make a suitable spigot on both the handle and the shaft to suit both the ID and top and bottom OD measurements, glue up all the joint parts including the collar bore, and top and bottom ends. Install the rodding in one section, slide the collar over in place, and then push in the other half of the stick so that the shoulders/shelves are flush with the top and bottom edges of the collar, and the part ends meet exactly as shown in the image.
The images and text on this page tell all that they need to about how to install a collar onto a walking stick. If there is any bit that you don't understand feel free to contact me and ask. DRY FITTING is essential, as is accurate measuring. This will ensure the best fit, which in turn will provide optimum joint strength.
Take your time to make sure everything fits together well. A little time at the start means years and years of additional service. It is worth the additional effort to get it right.