Checking My Nuts

[mike-sid]

(02-15-2015, 07:48 PM)PixMan Wrote: I hear there's a guy over in central MA who willingly makes new replacement screws and nuts for his friends' machines for the cost of material and shipping.

And he sometimes forgets the material part if it's already on hand and didn't cost him anything.

You should try and find that guy, though I hear he's a bit of a pompous arse.

Free???? WTH???? I had to buy that asre lunch!

[mike-sid]

I think after watching Ken make my cross slide screw and nuts, I have the knowledge, and maybe the courage and skill to do it myself. The experience was priceless.

Ken, When you cut the threads on the cross slide screw did you used a full forming insert cutter? I forgot.

[EdK]

I'm leaning towards purchasing some 1" x 10TPI acme threaded rod to make new lead screws and then make new nuts. I think I'll have better success making new nuts than cutting new lead screws from rod. Still thinking about it.

Ed

[stevec]

Ed, if you're thinking of buying "just"  1" x 10TPI acme threaded rod you may want to re-think. You mentioned the existing screws weren't worn but the nut(s) are, indicating the screws were made of some higher (harder) class steel.

Just a thought.

Steve

[mike-sid]

(02-17-2015, 08:09 AM)EdK Wrote: I'm leaning towards purchasing some 1" x 10TPI acme threaded rod to make new lead screws and then make new nuts. I think I'll have better success making new nuts than cutting new lead screws from rod. Still thinking about it.  

Ed

Why not? As long as the rod is of good quality. You can always try to make the lead screw, and if it does not come out good, use the threaded rod.

[PixMan]

(02-16-2015, 10:52 PM)mike-sid Wrote: I think after watching Ken make my cross slide screw and nuts, I have the knowledge, and maybe the courage and skill to do it myself.  The experience was priceless.
 
    Ken, When you cut the threads on the cross slide screw did you used a full forming insert cutter?  I forgot.

Yes, and I still have 4 of the 6 cutting edges between the two inserts I'd bought. One broke, one dulled, 4 good.

16EL-10ACME

[EdK]

(02-17-2015, 08:18 AM)stevec Wrote: Ed, if you're thinking of buying "just"  1" x 10TPI acme threaded rod you may want to re-think. You mentioned the existing screws weren't worn but the nut(s) are, indicating the screws were made of some higher (harder) class steel.

Just a thought.

Steve

I'm not quite following you Steve. I wouldn't expect the lead screws to be worn since any steel should be harder than most bronzes. And I doubt the existing nuts are even made from bronze. More likely they are some sort of brass. Anyway, I haven't made up my mind yet as to what I'm going to do. I might try making a nut from aluminum as practice and see if I can just make new nuts for the existing lead screws.

Ed

[dallen]

Ed, only one way to find out if you can make that nut.

chuck up a hunk of metal and see what you find in the middle.

DA

[stevec]

(02-17-2015, 09:41 AM)EdK Wrote: I'm not quite following you Steve. I wouldn't expect the lead screws to be worn since any steel should be harder than most bronzes. And I doubt the existing nuts are even made from bronze. More likely they are some sort of brass. Anyway, I haven't made up my mind yet as to what I'm going to do. I might try making a nut from aluminum as practice and see if I can just make new nuts for the existing lead screws.

Ed

Sorry Ed, I just thought that a cheap crummy steel "stock|" acme threaded rod might wear faster than a higher grade "precision" lead screw. The fact that the screws on your mill haven't worn (as you mentioned) may prove you right.

Steve

[EdK]

(02-17-2015, 11:28 AM)stevec Wrote:

(02-17-2015, 09:41 AM)EdK Wrote: I'm not quite following you Steve. I wouldn't expect the lead screws to be worn since any steel should be harder than most bronzes. And I doubt the existing nuts are even made from bronze. More likely they are some sort of brass. Anyway, I haven't made up my mind yet as to what I'm going to do. I might try making a nut from aluminum as practice and see if I can just make new nuts for the existing lead screws.

Ed

Sorry Ed, I just thought that a cheap crummy steel "stock|" acme threaded rod might wear faster than a higher grade "precision" lead screw. The fact that the screws on your mill haven't worn (as you mentioned) may prove you right.

Steve

OK, got it.

I wasn't planning on getting some cheap crummy steel acme threaded rod. I would go with some of this stuff.

http://www.roton.com/Mating_Components.a...ly=7059495

Ed