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Center Shot tool

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#6 ·
I would use a plumline as a reference for the laser. That would make it easier to align them and increase the precision.
 
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#7 ·
Reddirt said:
I built a prototype tool for setting center shot.
It has a laser light you screw into an arrow and one you screw into the stabilizer hole. You put the bow in a vise and project the light on the wall. Then align the dots vertically.



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Sorry to rain on your parade, but every method to find center shot has failed. Stabilizer bushings have found to be not straight. The EZ Eyer Laser was thought the cat's meow unitl proven to wasn't. The only true way to find center shot is through shooting. I can eyeball center well enough to get me in the ballpark. At the shop we use to eyeball center shot all the time. Out EZ EYE Laser gathered dust and eventually we got it sold - i offered over dozen new batteries to go with it.

nuts&bolts "trick" does pretty good when other methods seem to fail. Arrow rubber banded to the rise. Move rest so nocked arrow is parallel to the arrow on the riser.

Image
 
#8 ·
I hope it suits your needs, but my concern would be that anytime something as "precise" as a laser is screwed in/unscrewed you introduce a tolerance variance; suppose your light emitter isn't absolutely square, or gets bumped out of alignment, you could be adjusting to a bad set of standards.

Plus, it isn't BlindArcher friendly ;)

My center shot is much more crude, but then so is my arching skills... I have a wire about the same gauge as a coat hanger with a 90deg ish bend in it and a small bracket on the long end. I lay the bracket on the riser where the sight would mount, flip it one way to set the marker on the short leg in line with the string, then flip it and align the arrow up with the marker; essentially the tool compares the distance into the window of the string and the arrow from a fixed point on the outside of the riser. Not "laser" consistent, but even small bends in the wire don't effect the end result to a noticeable degree as long as the tool isn't bent while in use measuring a specific riser/time. Plus my center shot tool adjusts for tapered or barreled shafts, where actual center shot alignment changes as the arrow is drawn.

But still, a cool idea.
 
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#10 ·
I had something similar once, as you screwed it into the stab it left a big egg-shaped circle on the wall:(
 
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#12 ·
Very cool idea but as many experts have pointed out, it’s more complicated than many believe. Perhaps a modification of your Idea could incorporate Nuts n Bolts technique using arrow laser twice and measuring gaps between arrows and light on a distant surface.. Even then, Center shot is not a fixed point for even identical bows because of the countless variables each shooter introduces into the tuning of a bow.
 
#14 ·
Fun idea. Have fun playing with it.
As others have said not really marketing worthy. However there are some people that can sell ice to an Eskimo. Or gasoline thats on fire.

Lots of times people have a measurement in mind. They set arrow to it then tune the bow. Some never touch rest again others do.... It's all personal preference.

Again have fun and let us know how it goes for you.
 
#15 ·
It would be better to use this at full draw in a draw board than in a vise at rest/brace. Still, there are way too many variables that make it not worth using imo.

Still a good idea...
 
#17 ·
Cool idea, but i feel it's over-engineered for its purpose. It's easy enough to measure the distance from the riser or set an arrow against the riser to check if they are parallel.

Much like the Bowtech cam lean lasers, it may work, but a long straight edge works just as well.
 
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#18 ·
SonnyThomas said:
Sorry to rain on your parade, but every method to find center shot has failed. Stabilizer bushings have found to be not straight. The EZ Eyer Laser was thought the cat's meow unitl proven to wasn't. The only true way to find center shot is through shooting. I can eyeball center well enough to get me in the ballpark. At the shop we use to eyeball center shot all the time. Out EZ EYE Laser gathered dust and eventually we got it sold - i offered over dozen new batteries to go with it.

nuts&bolts "trick" does pretty good when other methods seem to fail. Arrow rubber banded to the rise. Move rest so nocked arrow is parallel to the arrow on the riser.

View attachment 7773475
Click to expand...
Been using one of these for over 30 years, aways starts me off on the right foot.
Image
 
#19 ·
SonnyThomas said:
Sorry to rain on your parade, but every method to find center shot has failed. Stabilizer bushings have found to be not straight. The EZ Eyer Laser was thought the cat's meow unitl proven to wasn't. The only true way to find center shot is through shooting. I can eyeball center well enough to get me in the ballpark. At the shop we use to eyeball center shot all the time. Out EZ EYE Laser gathered dust and eventually we got it sold - i offered over dozen new batteries to go with it.

nuts&bolts "trick" does pretty good when other methods seem to fail. Arrow rubber banded to the rise. Move rest so nocked arrow is parallel to the arrow on the riser.

View attachment 7773475
Click to expand...
Very interesting never saw this before. However why not just use a vernier caliper, measure the distance from the arrow on the rest to the riser where the arrow is nearest to the front and back of riser? If the distances are not equal then the center shot is off. However some bows like some Hoyt’s have a rubber type shelf on the riser which would probably make it impossible to get an accurate reading. The other issue is that not all risers are perfectly square where you need to take the measurements. So anyway you look at this I keep falling back to the old eyeballing it.
 
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