Hello welcome back to Enots engineering I'm Alan
in the last video we made this block that fits on top of your cross slide so
you can put other attachments on there like vices or anything else that you
want to make to fit it. In this video I'll be making another block that fits
on top and a pin that goes through and the pin holds in the dovetail as well as
locates in a bearing this is going to form part of a ball turning
attachment that you can fit on that will screw in that holds the dovetail on
and the bearing swivel on the top so in this video we'll make the top part and
the bearing this bearing is one that was leftover from when I changed the
bearings on the lathe from the power drive unit it was okay but obviously
it's been used a lot but for the swivel attachment they'll be adequate for that
so lets go into the workshop and see how we make the slide.
I've got this in the four jaw Chuck this is held on this side by the jaw the
normal way and on this side I've put the jaw in backwards so its resting on this
face on the back I couldn't put these in backwards because being narrower the
inside of the jaw would be touching the opposite side and it wouldn't close down
to grip there the part so I've had to leave two normal and two reversed jaws
so I've cleaned that up now I will drill a hole through the middle
don't bore all the way through leave about three millimeter from the back
face
1.4"
I've turned it around in the chuck and just clocked up the the bore I want to
do now just finish this bore off and face up this side so it's parallel with
the other
I needs to be around 26. 25.98mm that will be okay
just take the sharp edges off. Just have a recap the first thing we did was
make the dovetail part of the slide which fits into the first block we made
last thing we've made was this piece which is basically a steel block
we bored out the the bore for this bearing which I've now pressed in so
that will go on the bottom this will go on the top like that so now we have to
make the pin or the bolt the holds the two together so this can swivel first
thing we've done is put the three jaw chuck back on now just put a piece of
metal in the chuck that's about an inch diameter
just clean the piece up
now I'm just roughing the outside down to just above 0.750"
0.78" so I'll change the tool back to high speed steel tool finish that off
to 8mm and this size finish that down to 0.75 which should be a nice fit
on the bearing
this diameters is bigger so I'v slowed the speed down
so it just starts to go onto the block stops there it's about halfway in the
bearing your soft fits that back half doesn't what I,ll do is use some emery to
polish it
so it's just thou under
just go on I don't want to push you on because I have to take it
off to finish it so I what I need to do now is put a thread on this I'll just clean
the outside up there so its ready for parting off when I put the thread on
Take the corners off
I'm turning the headstock with a spanner
expanding mandrel that's in the headstock I'm using the spanner one in on
the headstock and this handle on the die stock I can turn if forward
This is the bottom plate with the dovetail in that goes through the middle and
screws the dovetail in position and also that will pull into the bearing now you
see going down into the bearing now that's tight and you've just got enough
play to move that
so there are the three pcs fitted together the bearing the spindle and the
dovetail on the bottom you tighten the dovetail up then it pulls the spindle in
and it should just give you a nice movement and the top should be clear.
so I need to
make is probably a cover just to go over the bearing to stop swarf filling in
here
oh well that's it for today thanks for watching and we'll see you next time on Enots engineering