Quote Originally Posted by Kitwn View Post
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The beams holding the rails were then made accurately co-planar using shims on one corner. You only ever have to adjust one out of four corners! I sat the other 3 up on fixed,12mm shims to give me wriggle room in both directions. Making the end result more rigid with epoxy putty makes sense. Thanks for the links to Milliput, I would have tried to use Knead-It which is on the shelf of every Bunnings but sets in only 10 minutes.

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http://www.mycncuk.com/threads/13904...-Machine/page2 Posts 15 & 16

Kit
Thanks Kit,

In your posts 15 & 16 you have raised a number of welding and alignment techniques that a novice like me can use to great effect.

I particularly like your explanation that you only ever have to adjust ONE out of four corners to get the rails co-planar.

Btw, looking at the scenic background in one of your images, it looks like you guys have moved down to a patch of heaven in Van Diemen's Land. . . . . .

Andy