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cross hairs in sight tube?

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#1 sw196060

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Posted 03 July 2020 - 05:50 PM

I am making a homemade Cheshire/sight tube with cross hairs.  Was looking for good ideas for the cross hair material.

I was thinking of using black sewing thread, pulled tight and glued at each end to the tube.  

 

Anyone else done this?    Any good success stories?

 

 

 

Thx



#2 Lazaroff

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Posted 03 July 2020 - 05:57 PM

I haven't done this for many years, but I remember stripping the plastic off ordinary multi-stranded lamp cord and using single strands of the copper wire.


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#3 happylimpet

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Posted 03 July 2020 - 06:09 PM

I haven't done this for many years, but I remember stripping the plastic off ordinary multi-stranded lamp cord and using single strands of the copper wire.

Yeah I tried that. Seemed to work. As it happened i managed to fix my original one so didnt need it, but it seemed ideal if you can get it straight.



#4 dmcnally

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Posted 03 July 2020 - 06:21 PM

I haven't done this for many years, but I remember stripping the plastic off ordinary multi-stranded lamp cord and using single strands of the copper wire.

I used one conductor of a CAT5 network cable.  It's either 26 or 28 gauge wire. confused1.gif

 

Clear skies,

Dave



#5 sw196060

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Posted 03 July 2020 - 07:53 PM

Hmm. Yes, single strand 28 or 30AWG wire

might do.  I just need to keep it very taught while gluing it. 
Probably better than thread. 



#6 dmcnally

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Posted 04 July 2020 - 07:50 AM

Hmm. Yes, single strand 28 or 30AWG wire

might do.  I just need to keep it very taught while gluing it. 
Probably better than thread. 

Make a small jig.  A hole saw, some plywood, and 4 screws will do.  Put the screws at 0, 90, 180, and 270.  Then wrap the wires around them.  Place the jig over the chesire and move it around until you're happy.  A drop of super glue, or a dab from a small hot glue gun, on each wire will work fine.  Trim the excess and you're done.

 

Clear skies,

Dave


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