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Search: Posts Made By: Gerald D
Forum: Rails & Rollers Sat 17 July 2010, 08:28
Replies: 25
Views: 27,286
Posted By Gerald D
You can make yourself a small rail-rider laser to...

You can make yourself a small rail-rider laser to project a dot about 10 or 20 meters away.....if the dot stays in the same place then the rail is straight.....
Forum: Rails & Rollers Fri 16 July 2010, 06:04
Replies: 25
Views: 27,286
Posted By Gerald D
Used a long alu extrusion as a reference, then...

Used a long alu extrusion as a reference, then feeler gauged between the extrusion and the rail. (extrusion checked for straightness by seeing if all faces give the same readings). Sag due to gravity...
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