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Laser sight problem
Laser sight problem solving - SMK LS range laser sights can
suffer from beam problems and ability to zero issues.
The standard solution when one is a bit dodgy is to send it
back for a swap (and hope the swap is OK :-o)
If you're a bit handy it's possible to not only solve the
problem but come out with a much better than standard spec
All round handyman and custom gun case and stock man Chris
Keir takes us through it here. Chris, by the way, is available
for custom work on scopes, stocks and to make beautiful cases
for guns or accessories. This man is multi talented - See
some example pictures here and if you're interested in some
custom work drop me a line and I'll put you in touch with
So - Got a dud or dim
There were 2 problems - A dim beam that
faded and died + the mount not taking the laser high enough off
the scope so that there was some beam bouncing.
- Fancy trying to fix it and make it better than
- Here's how - In Chris's own words
The problem was really the beam dying when clamped, when
rotated, when anything really, and fading as if batteries
So I had a good look and a think....
- Cleaned solder - the contact is the switch cap. .didn't
make any difference. (Ed - do it anyway just in case as
problem reasons vary)
The aperture for the beam has a piece of plastic
membrane across it behind the front face of the unit...
- With a rough hole much smaller than the
aperture punched in the plastic and way off
- I reckon this membrane is part of the
production process to keep dust and swarf from
getting in..and gets a hole punched in at point of
packing where its immediately sealed in its foam
- So scalpel blade and removed it
completely...Call it Post Purchase Quality
Then thought about how the circuit works...
- Aha. The bodyshell is the other contact apart
from the solder one.
- And all the threads are coated in the same
black finish as the outer.
- Some work with wire wool and a pin to clean
along the threads and bring it to bright metal
good rock solid bright beam unaffected by anything apart
from the on/off switch.
Beam Bouncing off scope solved
Then cut a pad of rubber sheet about 12mm square and contact
adhesive fixed it to the clamp that takes the bottom half of
the laser unit to lift it a little so it didn't bounce off the
scope body.. Now its spot on ! ( Pun also intended !)
Also put an aluminium ring around one of the scope caps... Just
cos it fitted and it personalised them Its on the
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deal with and survive natural and man-made
disasters and emergencies in the "Worst Case Survival Guide"
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