Hello welcome to Enots engineering i'm Alan in today's video i make a new tailstock guide
pin the guide pin steadies the barrel of the tail stock and stops it from spinning
when you're drilling holes or tapping it's fitted into the base of the tail stock
on the Boxford and the one i have is the original Boxford guide pin so today we're making a
new guide pin from a piece of silver steel so let's go to the workshop and see how we do it
today i'm looking at the tailstock and i want to replace the pin that guides
the barrel and stops it twisting you can see there's some twist in that
it will move a bit i want to try and reduce that
still got the original pin in there and the way you take the pin out is remove the barrel just
unwind it till it comes to the end of its thread and pull it out and you can see the slot that it
travels in just take some pliers you can see on the inside the pin there
pulls out take these gloves off i've just been changing the gears in the headstock
so that's why i've put those on so we just have a hole in the base
there's the original pin
just clean the bore first
i've fitted the drawbar onto my er20 collet holder
just found an off cut of six mil silvervcsteel i've put that six mil collet
that should stick out enough
let's face the end off
i want to move along
speed this up a bit
i made that 0.4" long
and i want to reduce it now to 0.218"
the size at the moment is 0.2
0.223"
let's put a lead on for the beginning
0.220"
0.219"
so i've made a little smaller on the end
so i can get the pin lined up to the hole and then when it goes in it should tighten
up on this this part so what i need to do now is a flat on the other end
okay i've set it in the milling machine i've just used a square block
er32 collet holding the bar first thing i want to do is just mill the top off flat
i'll slow this one down a bit
what i want to do is just touch the back edge
and then come in 1.3 mil and then do the same on the front
it's given the width of 3.47mm the original pin is 3.13mm
it just goes in on this end tight fits on that end so it probably wants a couple of thou taking off
that's the original i've made this one a little longer so i can
grab the bottom of it and twist it round when it's in the tail stock
It just wants a sharp edge he's taken off and a bit of a lead put on
that's the finished pin
i just drop it in the hole
and being a bit longer i can grab the bottom to twist it if it needs it
and all i need to do is put the
part back together
screw it back in
see how much
play there is
a little bit
and that's that job finished
i'll keep the old one as a pattern
keyway fitted in the tailstock
let's put a bit of oil
you can see why i said i put the pliers on the bottom i can turn that round
hold it in position
seems a bit better
okay well that's it for today thanks for watching
hope you enjoyed it and we'll see you next time on Enots engineering