Linear rail alignment

[mechsiah]

As far as leveling goes, I had considered the idea of simply pouring a resin into a frame around the mounting base. This may be naive, but I kinda hoped the liquid would level itself out before it hardened, saving me the the trouble. There would be some surface tension around the edges, but the rest of it would be at least a good starting point perhaps?

[Tig]

Hi,
I think Epoxy is a great place to start. I am looking at using Epoxy myself. Its ability to flow and self level is amazing. I did a web search to see if anyone else had any experience casting Epoxy resin reference plates. I came across this web site: Precision Epoxy Products http://www.precisionepoxy.com/ Of special interest is the article: Naval Postgraduate School Project. A quote from the thesis confirms the validity of using Epoxy resin to cast a level reference surface: "The Granite table was replaced by a 16 foot by 14 foot epoxy floor leveled within 0.003 inches end to end". There is no reason this process should not work for other configurations as well. It's well worth a look at.
Tig

[mechsiah]

Wow - that is far better than I would have hopped to achieve. If I can get .01 I would be happy. I am guessing that I could also use the epoxy to provide additional stability for the structure and a nice liquid resistant surface.