StrayAlien
Cast Iron
- Joined
- Aug 18, 2014
- Location
- Melbourne, Australia
Hi all,
I am having troubles getting a good finish on my 10L. For one - I definitely have the 24tpi bands on the finish discussed over here:
http://www.practicalmachinist.com/vb/south-bend-lathes/10l-poor-finish-power-feed-330098/
That is a very interesting thread. I'll try to solve that one by looking at the apron worm etc. But my main concern is a 'lumpy' finish.
The surface is just not smooth - I don't mean torn, on 12L14 most of the surface is good except for lots of not so little ridges. Not at 24tpi. It is like the cutting tool is not being held at the same position along the cutting axis.
I get same when I lock the cross slide using the taper lock handle, and I also have the compound set along the axis of the cut .. so any pull etc should hopefully not pull itself into the work.
I am not sure whether the carriage/apron should be able to be lifted at the front but I can lift mine a fair bit. I also noticed that I can press on each corner and register movement if I have a dial on it.
On the weekend I used my taper attachment for the first time and it is pretty stiff (the machine is quite worn so I guess it is not quite aligned correctly anymore more). What I did notice is that when I turned the hand wheel the front of the carriage lifted and brought the workpiece closer by about two thou.
Any help an assistance is much appreciated.
Greg.
PS. The machine has been rebuilt at some stage and the gearbox, rack, etc are shimmed down.
I am having troubles getting a good finish on my 10L. For one - I definitely have the 24tpi bands on the finish discussed over here:
http://www.practicalmachinist.com/vb/south-bend-lathes/10l-poor-finish-power-feed-330098/
That is a very interesting thread. I'll try to solve that one by looking at the apron worm etc. But my main concern is a 'lumpy' finish.
The surface is just not smooth - I don't mean torn, on 12L14 most of the surface is good except for lots of not so little ridges. Not at 24tpi. It is like the cutting tool is not being held at the same position along the cutting axis.
I get same when I lock the cross slide using the taper lock handle, and I also have the compound set along the axis of the cut .. so any pull etc should hopefully not pull itself into the work.
I am not sure whether the carriage/apron should be able to be lifted at the front but I can lift mine a fair bit. I also noticed that I can press on each corner and register movement if I have a dial on it.
On the weekend I used my taper attachment for the first time and it is pretty stiff (the machine is quite worn so I guess it is not quite aligned correctly anymore more). What I did notice is that when I turned the hand wheel the front of the carriage lifted and brought the workpiece closer by about two thou.
Any help an assistance is much appreciated.
Greg.
PS. The machine has been rebuilt at some stage and the gearbox, rack, etc are shimmed down.