Hi Monk,

You might find the following post useful. I listed some terms which might help, plus others have added helpful comments:
http://www.mycncuk.com/forums/showth...r-for-hobbyist

Maybe we need a glossary of terms section in this forum which anyone can add to...?

Anyway, you can always go to the local library and get a sketch scanned in and email it to yourself, to then post here. Picture paints a thousand words as they say. By the way, if you need to cut aluminium profile, several of us have found out you can use a chop saw with metal cutting blade. Do some trial cuts on wood to get the blade as square as possible.

Hiwin profile rail and ali profile make a great combination. Almost as good, but cheaper, is the supported rail and open bearing. 16mm is popular, as sold by Zapp and others.

Post away . . .