A 6jaw set tru. Graduate from the 4jaw
^^^^^^^^^^^^^Make a spider.
Yes. You dont loosen each jaw to move it so the part stays tight. Very easy to useI'm graduating from a hobby lathe that's older than I am.
My understanding of a 6 jaw set true - 6 jaw scroll mechanism, and then it's got 4 set screws to adjust for runout... correct?
i thought they were std equipment and included .ties must of changed thigs . What make is your old lathe ?
If your just needing a four jaw chuck for regular turning needs not chambering barrels Gator chucks aren’t than bad for the money. But a inboard spider is they way to go for barrel work.
i thought they were std equipment and included .ties must of changed thigs . What make is your old lathe ?
I used one and mounted to D1-4 backplate for my PM-1340GT. Once mounted, you can turn OD, bore ID and get it perfectly true. Tig welded a 5/16 bearing to end of 3/8-24 set screw. 5/8" OD x 1/4" thick aluminum pad with a recess for bearing, allows it to swivel. Works well and pretty cheap inboard spider.For the money this spider is hard to pass up.
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Aluminum Spider Plate - 5" Diameter - Grizzly Industrial, Inc.
Made specially for gunsmithing operations, particularly when chambering barrels, these spider plates are used so that shorter barrels can be chambered through the headstock of the lathe. The brass tipped screws prevent damage to the barrels and allow for fine adjustments very similar to a 4-jaw...www.grizzly.com
Yep. 6 jaw is nice to have (I have a 6" one, as well as an 8", 3 jaw) as it will grip thin wall materials better without crushing. I don't know that I see an advantage to one over a 3 jaw for chambering, but I might be missing something.My understanding of a 6 jaw set true - 6 jaw scroll mechanism, and then it's got 4 set screws to adjust for runout... correct?
One thing about an independent 4 jaw is you can hold irregular shaped pieces. Things aren't always round or symmetric that you need to turn.