You could look at the True bore alignment system. I dont know if it is any faster than the way you are doing it now but you can evaluate that. I usually dial in on a pin then drill and bore to make room for the indicator. Dial the throat , true up the bored hole and then ream. I have a 6 jaw adjust true a four jaw and a spider chuck for me they are all about the same in terms of manipulating the position of the boreBeen using a 4 jaw chuck, takes me a long time to dial in a barrel, is there a better option as far as chucks go? Any tips would be very much appreciated.!
Thanks ACSR
I have and use a 6 in the shop for thin tubing and delicate parts that you don’t want to clamp too tightly. I would not buy one specifically for regular machining or barrel work. One downside to them is they won’t hold as small of diameter parts as a 3 jaw. Maybe some have a 6 for the same reason I have one and then use it for barrel work?just wondering why would anybody use 6 jaw chuck ? in the 45 years in a machine shop i've only seen
one or two and one of them had three jaws off the chuck
I have a Buck 6 jaw that I bought when I was stupid. It's a gorgeous piece of machinery. I love it. It has its place in the shop, for sure, but I don't think it can hold less than 5/8ths.I have and use a 6 in the shop for thin tubing and delicate parts that you don’t want to clamp too tightly. I would not buy one specifically for regular machining or barrel work. One downside to them is they won’t hold as small of diameter parts as a 3 jaw. Maybe some have a 6 for the same reason I have one and then use it for barrel work?
I use gage pins exclusively for dialing in the muzzle. -.0005" under nominal bore diameter fits every barrel. Occasionally I'll get an odd ball on the large side that I'm not comfortable with and then I pull out the bushing box.
Now all you naysayers calculate the angular misalignment in a 26".
What no love for an inboard spider?
As inexpensive as these are everyone should have one.
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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
Turn the jaws around on a 3 jaw works also. I have a small 4" chuck I hold bolts in for work that's held that way.Seen guys just clamp them in a 4 jaw and use this instead to dial barrels in for the finer adjust of screws
Done that lots with a 3 jaw. Use the spider to dial it in without removing the chuck that way.Seen guys just clamp them in a 4 jaw and use this instead to dial barrels in for the finer adjust of screws
I use a reamer bushing to dial in the muzzle on the outboard side.I use gage pins exclusively for dialing in the muzzle. -.0005" under nominal bore diameter fits every barrel. Occasionally I'll get an odd ball on the large side that I'm not comfortable with and then I pull out the bushing box.
Now all you naysayers calculate the angular misalignment in a 26".
Gasp!!!Now all you naysayers calculate the angular misalignment