First part to see the new lathe
This is an aluminum adapter to fit my fat shroud. I have a 24″ barrel on the way, and am going to experiment to see if short and fat works 😀 Take into consideration that this is my first time ever using a metal lathe, and I don’t think the cutting tool was set at the correct rake angle. It also hasn’t been bored out yet because i don’t have those tools yet.
Picking up the lathe
Go here http://talonairgun.com/forum/viewtopic.php?t=3044 for more pics of the lathe.
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Viewing 7 replies - 1 through 7 (of 7 total)
Nothing wrong with hand feed. On my finer finishing cuts I usually hand feed and the results are indistinguishable from power feed. Looks like a SB 10 heavy? 24″ bed? Armstrong tool rest… I learned on a machine like that, but nowadays I’d not trade my Aloris toolpost. Too damn convenient.
Rake isn’t too important, but angle of your tool setup left to right is, if you’re still using an Armstrong. When cutting right to left, as most guys do, keep in mind how springy your tool post is. So if you have an angle on your post and are cutting into the work going left, your bit will tend to ‘hog in’ or bite if you feed too much or too fast. If you set up the post direct 90 degrees, it will tend to flex away from the work with too much feed. You have to find what your machine is happiest with, but keep in mind this will change with material hardness. Be sure to set up the machine on pads so you can level it, to avoid any flex in the ways.
My biggest gripe with the Armstrong is that it’s so hard to get it dead set at the right height, not rake. For threading, for instance, just a thousandth too hgih or low and I can see the difference in the cut, the harder the material the more pronounced the difference.
The SB is a nice machine, even if it’s getting harder to find leather drive belts these days. I’ll always have a soft spot for them. Nice acquisition, congratulations on a fine machine. It will last longer than you or I will, or anyone else on this list, with a minimum of maintenance.
aloha,
walt
Table and lathe are 1000+ pounds. Yes it does have power feed, but I’m not comfortable with the machine yet to use it 😀
a model A southbend ? ,looks in good shape, nice little lathe , i beleive it actully only weighs 300+lbs . but the table looks heavy .lol.
Does that thing have power feed? It looks like you hand fed.
Good Luck
Yeah! It weighs 1200 pounds! 😯
Thats a Big Ass Lathe, Congrats !
Viewing 7 replies - 1 through 7 (of 7 total)
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OK, if you wanted the rake specs, I just looked it up quick and dirty; for carbon steels, side rake is 12 deg, front rake is 8 deg, and back rake is 16.5 deg. The “back” rake is the one that tilts upward from the horizontal.
aloha,
walt