DaveTooley
Gold $$ Contributor
And unless forced off center the reamer then goes to the middle of the hole.
I'll add it easy to read the Interapid to +/- .0001"
I'll add it easy to read the Interapid to +/- .0001"
I like your setup too. Thats my point, they could have squeezed 4 little marks in between delineations on the interapid because the .0005 marks are so far apart and called it a .0001 indicator. For our uses we really only need one mark on the dial. We get caught up in those marks. They could pull out every other mark on that interapid and call it a .001 and it would still be as accurate for dialing purposes.The dial on the 0.00005 is half-again or more larger than the 0.0001 indicator and that is how they can squeeze in the extra mark and make it meaningful.
Get a heavy duty noga mag base. Dont skimp on that as tempting as itll be
Get a heavy duty noga mag base. Dont skimp on that as tempting as itll be
Ok, here is what I found.
Need one of these.
INTERAPID
INTERAPID® - 0.06 Inch Range, 0.0005 Inch Dial Graduation, Horizontal Dial Test Indicator – 1–1/2 Inch White Dial, 0–15–0 Dial Reading
Need one of these.
INTERAPID® - 0.016 Inch Range, 0.0001 Inch Dial Graduation, Horizontal Dial Test Indicator – 1–1/2 Inch White Dial, 0–4–0 Dial Reading
and two of these
INTERAPID® - 0.08" Ball Diam, Carbide, Ball Test Indicator Contact Point – 2.675" Contact Point Length, Use with Brown & Sharpe 74.111965 Interapid 312 Dial Test Indicator
If you use the number i showed in the amazon picture you dont need the contact point. It comes with it. And heres the part number for the mag baseOk, here is what I found.
Need one of these.
INTERAPID
INTERAPID® - 0.06 Inch Range, 0.0005 Inch Dial Graduation, Horizontal Dial Test Indicator – 1–1/2 Inch White Dial, 0–15–0 Dial Reading
Need one of these.
INTERAPID® - 0.016 Inch Range, 0.0001 Inch Dial Graduation, Horizontal Dial Test Indicator – 1–1/2 Inch White Dial, 0–4–0 Dial Reading
and two of these
INTERAPID® - 0.08" Ball Diam, Carbide, Ball Test Indicator Contact Point – 2.675" Contact Point Length, Use with Brown & Sharpe 74.111965 Interapid 312 Dial Test Indicator
Unless you just like spending money - you don't need 4 indicators in this class to start. The 312 is the only one you really need to start and a single mag base (amazon above). If you're really feeling spendy you can get two so you have one at each end without having to move it. I don't know why you would buy 4 however...
If you use the number i showed in the amazon picture you dont need the contact point. It comes with it. And heres the part number for the mag base
View attachment 1233863
You have to go thru a part number building tool like this
THAT ONE?
It appears to be the same I linked to MSC. I do not see that it comes with the long stylus.
You have to go thru a part number building tool like this
Interapid Test Indicator
Interapid test indicator made in Switzerland, vertical and horizontal modelswww.longislandindicator.com
I know the amazon link works to get the right one.
Its way faster to use a reamer stop. Then you can use a depth mic or a shop built tenon measuring tool and feeler gages to get even faster. Note: this does not work with manson headspace gages.For headspacing - I've been using the DRO on my carriage with the .0005 interapid touching the flat face of the reamer holder. That way i can actually unlock the tailstock and slide it back rather than having crank the barrel in and out many inches for each ream and chip clear.
I see a lot of guys putting a caliper setup on their tailstock so they can measure barrel travel more easily without worrying about backlash, but that only works if you never move the tailstock (which I find convenient).
Ill show you a pic later when i chamber one. And yes if you are .009 short you dial in .009 on your stop and you cant even get .010 if you mess upWhat do you mean by using a depth mic or tenon measuring tool and feeler gauges? I can' envision where the feelers come in, as shims in front of the reamer stop for gross adjustments as you close in on final depth?
My current process is that once I'm "close" to final heaspace (by just using the DRO to get me within say 10 thou) I then take my tenon collar, go guage, and depth mic to see that i'm really 9 thou from where i need to be from last measurement of the indicator+carriage that hasn't moved. so then i can go for a final cut by just watching deflection on the indicator get to appropriate depth.
I have looked at a reamer stop before and agree that seems like it would be less error prone for final cut, since there isn't any chance i could bump indicator, etc.... break out another $250!
You have to go thru a part number building tool like this
Interapid Test Indicator
Interapid test indicator made in Switzerland, vertical and horizontal modelswww.longislandindicator.com
I know the amazon link works to get the right one.