starting to put together a disc grinder, sort of

fast14riot

fast14riot

Joined
Oct 27, 2010
Messages
8,721
Well I have had this wood lathe at my parents house for years, and the tailstock won't center anymore so it hasn't been used in a while. Everything else is fine, though. I have a 9" disc for it, and it is set up for outboard turning, so if I can find a disc or faceplate to mount on the other side with 3/4-16 left hand thread I won't have to worry about wiring a reverse switch right away. I just pulled the bed off and viola!

2011-07-22104706.jpg


2011-07-22104721.jpg


2011-07-22104804.jpg


Its kind of hard to read the speeds but they are 575, 980, 1560, 2520, 3580. This thing should work well for knife making after I build a work rest. I think I can find an old sander with a tilt table at the flea market to rob the table from for this.

I will update as I progress with this and after I get it running in its new form.


-Xander
 
hmm, having a hard time finding any size face plates for outboard drive spindle. Do any of you machinists want to make a 9" sanding disc with 3/4-16 left hand thread for me? Or anyone know where to find outboard turning face plates? I only can find 1"x8 thread in left hand.


-Xander
 
Not to be a spoilsport, but I see a problem with the motor type and placement.

You could probably order a disc from Rob at Beaumont in the desired thread.

It seems far cheaper to just use a reversing switch if the motor is reversible, and stay with one disc.

How I might deal with some of these issues:
1) Use just the existing disc, and turn the motor 180 degrees. Wire it with a switch for forward/reverse rotation. That will move it out of the grit/dust path. You would have to reverse the pulley on the lathe shaft for them to match up right, or mount the motor on a hinged and sliding plate. That would make speed changes easy and fast.
2) Changing the motor to VS will eliminate the whole pulley and motor placement issues. Using a TEFC would be advisable. The disc should be reversible that way,too.
 
Yeah I know it is less than ideal. I was wondering about mounting it transversely but haven't pulled it apart to see how easy turning the motor around would be yet. Also with threaded spindle ends I don't think reversing would be a good idea. That's why I was going to run a second disc. I have a tefc 1hp 3450rpm 1ph dayton motor that I know is reversable that I may make a disc grinder with a jack shaft and step pullies at some point, but I don't have the capabilities to weld.


-Xander
 
Hey Xander,
I have that exact same lathe. Mine came with a face plate for each side. Check with places like woodcraft they should be able to help you find one. I turned 2 wood discs to just over 9 inch while they were mounted. I then put an aluminum face on each disc (cut close to the wood size. With the motor on its slowest speed I turned the aluminum and the wood to 9 in.). It isn't perfect but it does get the job done. Good luck.
Dan
 
DanCo said:
Hey Xander,
I have that exact same lathe. Mine came with a face plate for each side. Check with places like woodcraft they should be able to help you find one. I turned 2 wood discs to just over 9 inch while they were mounted. I then put an aluminum face on each disc (cut close to the wood size. With the motor on its slowest speed I turned the aluminum and the wood to 9 in.). It isn't perfect but it does get the job done. Good luck.
Dan
Click to expand...

Yeah this is a pretty popular lathe, it's the Craftsman lathe as well. I have all sorts of tooling for it including about 10 faceplates, but they are all RH thread. I inherited it from my granfather about 7 years ago or more when he passed, and he bought it in '84. So if he had a LH faceplate for it I don't know where it is. I have been checking all over the net, leevalley, wodcraft, woodenpost, sears parts direct, etc and haven't been able to find anything yet. Although I have found interchangeable hubs with the correct thread pitch. If I can find even a 2" or so faceplate I can mount an aluminum disc to it. Hell if someone could turn one for me that would be great. I can draw up a working drawing if someone needs as well.

Another thought would be to have a new spindle made that is 5/8" keyed on the outboard end to accept standard discs and just wire a reverse switch and leave the motor where it is. I have an exloded diagram with part sizes so maybe ill look into that as an option well. I just don't have the funds to blow on a 2x72 or even a 2x42 right now. I have this and love to tinker with things, so I will try to make it work.


-Xander
 
You must log in or register to reply here.
Back
Top