08-01-2016, 10:43 PM
Well, I got a chance to do some more on the lathe. Got the thread plate positioned and drilled the holes.
![[Image: beginDrillPlate.jpg?dl=0]](https://dl.dropboxusercontent.com/s/6zfkjn2uwszju4r/beginDrillPlate.jpg?dl=0)
Really hard to push this tapered drill, bit it worked.
![[Image: drilledThreadPlate.jpg?dl=0]](https://dl.dropboxusercontent.com/s/1tr0vc3pdndeoqg/drilledThreadPlate.jpg?dl=0)
Made another shaft, spacer and bushing for the gearbox.
![[Image: anotherShaft.jpg?dl=0]](https://dl.dropboxusercontent.com/s/s0uv4eazdzeuapn/anotherShaft.jpg?dl=0)
Picked up some unhardened 16mm drill rod to make some shafts with. The OD did not need to be turned so it worked out well. This stuff is fairly hard to cut.
![[Image: latheBearingSurface.jpg?dl=0]](https://dl.dropboxusercontent.com/s/udn7spkfzee6cc8/latheBearingSurface.jpg?dl=0)
![[Image: circlipLayout.jpg?dl=0]](https://dl.dropboxusercontent.com/s/b3ggqwiqbr5lgkx/circlipLayout.jpg?dl=0)
![[Image: scribeCirclip.jpg?dl=0]](https://dl.dropboxusercontent.com/s/51lktzenxu6awn1/scribeCirclip.jpg?dl=0)
Had to remove a bushing for the input shaft.
![[Image: gearbox.jpg?dl=0]](https://dl.dropboxusercontent.com/s/mw953pvb6jv7auj/gearbox.jpg?dl=0)
![[Image: inputShaft.jpg?dl=0]](https://dl.dropboxusercontent.com/s/t8vbqsfqxolsbdo/inputShaft.jpg?dl=0)
![[Image: dremelBushing.jpg?dl=0]](https://dl.dropboxusercontent.com/s/hl2fe6o8zo8ed8v/dremelBushing.jpg?dl=0)
![[Image: cutBushing.jpg?dl=0]](https://dl.dropboxusercontent.com/s/sw7m4zjegsrjsc6/cutBushing.jpg?dl=0)
![[Image: removeInputBushing.jpg?dl=0]](https://dl.dropboxusercontent.com/s/qoxorvjj1pgeajy/removeInputBushing.jpg?dl=0)
A bronze spacer was turned up and bored, to replace a worn aluminum one. Here is the keyway being cut. A keyway must be cut, so it can be installed on the shaft and clear a pre-installed key.
![[Image: shaperSpacer.jpg?dl=0]](https://dl.dropboxusercontent.com/s/zd5wyr3bnfor51d/shaperSpacer.jpg?dl=0)
![[Image: bronzeSpacerClose.jpg?dl=0]](https://dl.dropboxusercontent.com/s/fv2zy0izxlwj6ci/bronzeSpacerClose.jpg?dl=0)
![[Image: SpacerFinished.jpg?dl=0]](https://dl.dropboxusercontent.com/s/tscq4etsddvwi4q/SpacerFinished.jpg?dl=0)
After measuring the shaper with a dial indicator high to low and side to side, and finding a tolerance of not more than .001" overall, I have even more respect for that machine. This gave me enough confidence to attempt a resurface of the tailstock base. But before that, I made a new cam for the tailstock. I used a method I watched on youtube to clamp the stock offset, and it worked great.
![[Image: clampCam.jpg?dl=0]](https://dl.dropboxusercontent.com/s/cfx1y2bt8i3vdl9/clampCam.jpg?dl=0)
![[Image: camFinished.jpg?dl=0]](https://dl.dropboxusercontent.com/s/xj079675tfll0oi/camFinished.jpg?dl=0)
Back to the base.
![[Image: baseTopBefore.jpg?dl=0]](https://dl.dropboxusercontent.com/s/e8vi0iuajrafl9i/baseTopBefore.jpg?dl=0)
The plan is to machine this surface and the bottom and make a shim to bring everything to the proper height.
![[Image: planeBaseTop.jpg?dl=0]](https://dl.dropboxusercontent.com/s/1l0eya1ry5j48l7/planeBaseTop.jpg?dl=0)
After shaping the relatively easy to mount top of the base, a jig was welded up to enable mounting upside down on 123 blocks.
![[Image: mountSystem.jpg?dl=0]](https://dl.dropboxusercontent.com/s/nx72mol8unjmbk4/mountSystem.jpg?dl=0)
You can see the typical wear on the V way on the initial cut. The vise grips were used as a weight to keep the clapper down.
![[Image: beginVcut.jpg?dl=0]](https://dl.dropboxusercontent.com/s/3uxjidcf31neecx/beginVcut.jpg?dl=0)
An angle of 45 degrees (90 included) was used for the V way. This proved to be the wrong angle, but as it turns out, that is of little consequence.
![[Image: cutVway.jpg?dl=0]](https://dl.dropboxusercontent.com/s/qhs0e8wl8js2ze0/cutVway.jpg?dl=0)
After machining the V way, the flat was skim cut, fit on the lathe, indicated with the cross-slide and skim cut again several times until the dial indicator read less than .001" when slid from front to back. All happy with myself, I put the base on the lathe and proceeded to slide it down the entire length of bed. The base is completely stable at the end of the lathe and near the chuck, but where it where it slid back and forth for 15 years daily there is a rocking motion. The way looks good at a glance, much better than the Standard Modern, but when you look very closely, you can see the top flat of the V way narrows a bit in that area. This is depressing, I thought all the wear was concentrated on the unhardened base as opposed to the hardened bed. The tailstock will not operate reliably over this. So now I wish I inspected the bed more closely. I would probably not have got into this large project knowing that. I now have to make a jig to grind the tailstock ways. This is something that I think is kind of hackish, but it has to be done to make this lathe usable. I'm not going to dump more money into this thing getting the bed reground professionally. I guess what I'm saying is don't go trying to pollish up turds..... Oh yea the angle of the V ways are 43.5 degrees WTF! When I grind it, I'll make it 45, so I don't have to re-cut the base.
bye for now.
Really hard to push this tapered drill, bit it worked.
Made another shaft, spacer and bushing for the gearbox.
Picked up some unhardened 16mm drill rod to make some shafts with. The OD did not need to be turned so it worked out well. This stuff is fairly hard to cut.
Had to remove a bushing for the input shaft.
A bronze spacer was turned up and bored, to replace a worn aluminum one. Here is the keyway being cut. A keyway must be cut, so it can be installed on the shaft and clear a pre-installed key.
After measuring the shaper with a dial indicator high to low and side to side, and finding a tolerance of not more than .001" overall, I have even more respect for that machine. This gave me enough confidence to attempt a resurface of the tailstock base. But before that, I made a new cam for the tailstock. I used a method I watched on youtube to clamp the stock offset, and it worked great.
Back to the base.
The plan is to machine this surface and the bottom and make a shim to bring everything to the proper height.
After shaping the relatively easy to mount top of the base, a jig was welded up to enable mounting upside down on 123 blocks.
You can see the typical wear on the V way on the initial cut. The vise grips were used as a weight to keep the clapper down.
An angle of 45 degrees (90 included) was used for the V way. This proved to be the wrong angle, but as it turns out, that is of little consequence.
After machining the V way, the flat was skim cut, fit on the lathe, indicated with the cross-slide and skim cut again several times until the dial indicator read less than .001" when slid from front to back. All happy with myself, I put the base on the lathe and proceeded to slide it down the entire length of bed. The base is completely stable at the end of the lathe and near the chuck, but where it where it slid back and forth for 15 years daily there is a rocking motion. The way looks good at a glance, much better than the Standard Modern, but when you look very closely, you can see the top flat of the V way narrows a bit in that area. This is depressing, I thought all the wear was concentrated on the unhardened base as opposed to the hardened bed. The tailstock will not operate reliably over this. So now I wish I inspected the bed more closely. I would probably not have got into this large project knowing that. I now have to make a jig to grind the tailstock ways. This is something that I think is kind of hackish, but it has to be done to make this lathe usable. I'm not going to dump more money into this thing getting the bed reground professionally. I guess what I'm saying is don't go trying to pollish up turds..... Oh yea the angle of the V ways are 43.5 degrees WTF! When I grind it, I'll make it 45, so I don't have to re-cut the base.
bye for now.