i too am creating some trekking poles. i went into a golf shop the other day and purchased two used shafts for 14$ total and brought them home
my goal is to make a pair of adjustable poles using the top section of the carbon shaft of two REI carbon poles. the golf shafts are tapered and at the widest end do not fit inside the carbon pole. my idea was to cut down the golf shaft to the widest spot that will slide snugly through the carbon pole. once this is done, i would drill a hole horizontally through the bottom pf the carbon pole and similarly drill a few horizontal holes through the top section of the golf shaft at specific heights (flat ground height, downhill height, extended for shelter height, and possibly collapsed height)
this way a pin can be inserted and locked through both poles and will have adjust-ability.
heres where i need some help:
questions/experiences?
-how durable will the graphite golf shaft be after it has holes drilled through a significant portion of the shaft? of course i will drill as few as possible, and leave a good length of undrilled length towards the top end to increase the strength of the system.
-any advice on drilling through a round smooth object with precision?
-will it be a big issue if there is up to a MM or two of space between the tapered end of the golf shaft and the carbon pole?
-any ideas on pins that would be low profile and easy to use for this application?
