Brad93
Member
- Messages
- 17,574
- Location
- Essex, United Kingdom
I’ve been making these a few years now. I used to make them like this, which I copied from a repro.
I buy 6mm 304 stainless rod from Aalco.
Then when I got the lathe I started using an M6 die in a diestock, with the tailstock pressing against the diestock keeping it square to the rod. Get the first inch started by hand turning the chuck, then thread under power.
All the time using plenty of Rocol RTD.
I chipped my old M6 Sherwood die so replaced it like for like.
This new die won’t cut a to size thread. M6 nut goes about one turn then gets stuck.
so I’m either being stupid here and I’ve used the die round the wrong way blunting it or it was duff out the box?
Am I right in thinking unless indicated, dies can be used both ways?
This one certainly seems to have equal countersinking/lead-in on both sides.
I tend to use them writing side up, so the unmarked side goes onto the rod.
I’ve tried cutting the thread and clamping the diestock down with the adjusting screws to cut a bit more off the thread, but to no avail.
In the end I’ve used a Sherwood M6 die nut to finish off the threads, and it ends up cutting off a fine strand of metal and narrowing the crests of the thread. M6 but then goes on fine.
they’re brake rods for old SWM bikes by the way.
I buy 6mm 304 stainless rod from Aalco.
Then when I got the lathe I started using an M6 die in a diestock, with the tailstock pressing against the diestock keeping it square to the rod. Get the first inch started by hand turning the chuck, then thread under power.
All the time using plenty of Rocol RTD.
I chipped my old M6 Sherwood die so replaced it like for like.
This new die won’t cut a to size thread. M6 nut goes about one turn then gets stuck.
so I’m either being stupid here and I’ve used the die round the wrong way blunting it or it was duff out the box?
Am I right in thinking unless indicated, dies can be used both ways?
This one certainly seems to have equal countersinking/lead-in on both sides.
I tend to use them writing side up, so the unmarked side goes onto the rod.
I’ve tried cutting the thread and clamping the diestock down with the adjusting screws to cut a bit more off the thread, but to no avail.
In the end I’ve used a Sherwood M6 die nut to finish off the threads, and it ends up cutting off a fine strand of metal and narrowing the crests of the thread. M6 but then goes on fine.
they’re brake rods for old SWM bikes by the way.