Another new guy with a Craftsman 2x42 and 3/4 hp motor question

N

norrin_radd

Joined
Aug 9, 2013
Messages
8
Hey,
My sons and I are getting into some blacksmithing and knifemaking. We have a small coal forge and have been tinkering with a railroad spike knife. I wanted to get a decent hobby belt grinder so I got the Craftsman 2x42 with the knowledge that I may have to do some mods to get the best out of it. Had it for 2 weeks and its still in the box, pathetic huh. Anyhow, I found a Central Machinery 10" disc sander 3/4 hp 1750 rpm nib at a liquidation sale pretty cheap so I got it.

Heres the question: Whats the best way to get the motor from that sander to run the 2x42 and still have the 10" disc? Can it even be done?

I've read quite a few of the 2x42 mod threads and havent really seen anything like that. Thanks for any help.
 
Sorry being lazy. These are what I've found on the net.

422501003_tp.jpg
10grindersmall.jpg


The back of the 10" sander has a fan attached to the shaft on the back under that shroud if it matters. I havent actually taken anything apart yet. The blue area on the 10" sander is all one solid piece of cast metal as far as I can tell. Should I scan the exploed view that shows all the parts that came in the instructions?
Thanks
 
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Any chance you can do a swap of the belt to the disc motor and the belt to the disc motor? That would probably give you more power for the belt as well as lots of access room to work on either side of the belt.
I believe you should also consider cutting that disc to 9" so that you can but the regular sized sandpaper sheets . Buying the tacky discs will be very expensive. Frank
 
Look up craftsman 2x42 upgrades on utube. Up grade the craftsman and use the 10" disc as is.
Eddie
 
Frank Niro said:
Any chance you can do a swap of the belt to the disc motor and the belt to the disc motor? That would probably give you more power for the belt as well as lots of access room to work on either side of the belt.
I believe you should also consider cutting that disc to 9" so that you can but the regular sized sandpaper sheets . Buying the tacky discs will be very expensive. Frank
Click to expand...

Not sure about swapping motors but I will look into it. The disc motor has a plastic fan on the back of it, not sure if I need to try to keep that or not. I guess I'll just have to take the craftsman apart and see what I can do. Thats a good idea about cutting the disc down, I'll have to figure out how to do that too.
thanks
 
I have both of the same grinders and don't think it can be done. I ended up taking the disk off my 2x42 and replaced it with a pulley that was belt driven by a larger and slower motor behind it.
 
gredpe3 said:
Look up craftsman 2x42 upgrades on utube. Up grade the craftsman and use the 10" disc as is.
Eddie
Click to expand...

I looked at alot of those vids and plan on doing them as time and $ allows. I thought that since I came across this decent motor that I would try to utilize it for both of them.
Thanks
 
This may be a stupid idea and I'm speaking with out actually breaking anything down, but.. Would it be possible to extend the shaft on the disc sander enough to fit a pulley in between the disc and the motor, then be able to replace the 6" disc on the 2x42 with a pulley and do what jawilder and others have done with the bigger motor? That would still give me use of the bigger disc. Just floating that out there, thanks
 
If I recall, the disk is held onto the shaft with a small screw. The shaft itself is very short and stubby. Even if you could figure out how to extend the shaft I don't know how you would be able to make it rigid.

You can usually find 1/2" motors on craigslist fairly cheep. Ask around or call AC repair guys. They junk them all the time. Also look for motors on clothes dryers.
 
I think by the time it's all said and done, it will be easier and less expensive to just do as a few suggested and run the 2x42 off another slower, more powerful motor. Plus, that disc sander will come in handy when you're fitting scales and/or bolsters.

[video=youtube;2qfYT_m2Tw0]http://www.youtube.com/watch?v=2qfYT_m2Tw0[/video]
 
Yeah I guess you're right. I'll just have to keep my eye out for a cheap one. Thanks for all the advice from everyone it was much appreciated. If we make anything cool I'll be sure to post it. We got a lot of learn'n to do.
 
Silver Surfer...Where are you located? If you're close to Mid-TN then I'd give you a 3/4hp motor that I have just sitting here. It's not a tefc motor, but it'll work.
 
You would likely need a pulley to replace the disk attachments on the craftsman, then you would need two pillow blocks and a longer keyed shaft with a pulley in the center that the 10 disk can spin on. This would allow you to drive the belt sander and spin the 10" disk on the same shaft. Better yet, find an old style belt driven buffer grinder with the same size shaft as your 10" disk. If you have the money, the coote 10" grinder with disk attachment would be a great setup for you at the lower end of the price scale ( for purpose-built knife grinders).

http://www.cootebeltgrinder.com/accessories.html

http://www.cootebeltgrinder.com/prices.html
 
Broomhead said:
Silver Surfer...Where are you located? If you're close to Mid-TN then I'd give you a 3/4hp motor that I have just sitting here. It's not a tefc motor, but it'll work.
Click to expand...

A fellow fine literature enthusiast :cool:

I really appreciate the offer, but that's a good bit out of reach for me. I should be able to find what I need around here, just got to keep an eye out.

Thanks
 
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