After long period of research for local suppliers building my CNC mill I've find out that Ebay is the best place of course
Hardware ( threaded rods, bolts, screws) are available locally in any hardware store Industrial areas is the best place for materials .
For more sophisticated frame it is better to use aluminum modular beams instead of threaded rods (better rigidity -> better precision) . They are pretty rare in Israel. Here is the site of company that has in stock some sizes of beams and seals it for reasonable price - 30 sh.meter. for 30x30 mm profile.
[www.arbel-ltd.com] located in Kiriat Bialik (North to Haifa)
They have some other cool stuff as well.
Plastics I buy from Werthaim ( Delarine, pvc .... in any sizes( no filament for 3d) ) located at bit north toVulkan junction (Hotsot a Mifrats) between Haifa - Krayot .