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  #1  
Old 02-26-2020, 08:39 PM
studenygreg studenygreg is offline
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Centering new sights

I have a wheeler sight pusher and have changed about a dozen sights so far. I always have a little trouble centering them on the slide, front and rear. How are you guys ensuring your sights are perfectly centered?

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  #2  
Old 02-26-2020, 09:01 PM
pat_jones pat_jones is offline
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If you have a vise and soft jaws, fine adjustments are easier with a small hammer and punch. By the time you load up a press, the sight moves further.

I measure the sights to the middle of the slide with a set of calipers. Perfect is difficult, but less than .005 isn't too hard. You then have to shoot it to confirm, not all pistols shoot straight.

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Old 02-26-2020, 10:09 PM
markm markm is offline
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I've gotten pretty good and eyeballing centers by looking at the slide features
cut. Sometimes it's hard to see or measure where they are, I usually mark the centers with a paint pen so I can tell where they are and how much they move.
As Pat said most sight pushers, especially those with soft jaws, can move more than you want when they do move. I often fine tune them with a brass punch and then remove the brass with Sweets.
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  #4  
Old 02-27-2020, 09:14 AM
GTTom GTTom is online now
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I've been able to get close with aligning front sights but not perfect. I just watched this video from Dawson Precision. (From another post here). For your answer look at the video at the 18:50 mark. So simple I totally would not have thought of it

https://www.youtube.com/watch?v=do8sHBDfIGk
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Old 02-27-2020, 09:58 AM
ken_mays ken_mays is offline
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The easiest way I've found is to measure the slide to find the center, then place a witness mark (dot of white paint) at that point, where it can be seen while the slide is installed in the sight pusher. Then find the center of the sight and place a similar mark on it, so you can stop pushing when the marks are aligned.
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  #6  
Old 02-27-2020, 11:15 AM
SV 22 SV 22 is offline
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I utilize a mill. I use a drill bit in the quill. I look through the firing pin channel and center the bit vertically. I move the table and adjust the front sight so the bit is centered. I then do the same with the rear sight. I usually use the front sight pin hole and rear sight set screw as the point to center the bit.

I am interested to hear other methods as mine requires access to a mill.
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  #7  
Old 02-27-2020, 12:06 PM
log man log man is offline
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I center the front sight on the bore. Slides are commonly off center. I use a surface plate and height gauge with a dial indicator. You can quickly get it down to .001" or less centered. The rear I center on the slide, and adjust only the rear for windage at the range.

LOG
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Old 02-27-2020, 07:56 PM
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STORM2 STORM2 is offline
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Quote:
Originally Posted by log man View Post
I center the front sight on the bore. Slides are commonly off center. I use a surface plate and height gauge with a dial indicator. You can quickly get it down to .001" or less centered. The rear I center on the slide, and adjust only the rear for windage at the range.

LOG
Yes, dial indicator with sight pusher.
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  #9  
Old 02-28-2020, 08:38 AM
GUNSnHOGS GUNSnHOGS is offline
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Quote:
Originally Posted by log man View Post
I center the front sight on the bore. Slides are commonly off center. I use a surface plate and height gauge with a dial indicator. You can quickly get it down to .001" or less centered. The rear I center on the slide, and adjust only the rear for windage at the range.

LOG
IIRC, log man had shared this procedure before; and I found it works perfectly!

Thanks log!
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Old 02-28-2020, 11:18 AM
log man log man is offline
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Okay a little more of that procedure. The barrel bore of the slide can be off, as well as the bore of the barrel. So I use a height gauge, with a test dial indicator, which has an adjustable stylus so the ball tip can go into the barrel and contact the lowest surface of the bore. Set zero, now go up to the side of the sight blade, write down measurement, turn over and do again. Adjust sight as per the measurement comparison, and re-measure.

The test indicator only has .030" of total travel and is zeroed so it is .015" either way, and is used to zero the height gauge in this set up.

If you click on the pictures they will enlarge and rotate in focus.

LOG
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20200228_085430.jpg   20200228_085344.jpg   20200228_085326_001.jpg  
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Last edited by log man; 02-28-2020 at 11:21 AM.
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