Cylindrical and round object are difficult to drill into, because they tend to move while you are trying to drill. Getting them clamped down can be tricky because they may be large and you can end up damaging them in the process. This jig works with aluminum t-tracks, t-slot bolts and knobs. It makes holding the objects in place much easier.
To download the plans, right click on the link and select “Save As”.
Cylindrical and Round Object Drilling Jig Plan