[Khalid]

Dear All,
As the 8020 T-slot extruded aluminum Profiles are not available in my country so thinking of using windows/doors Aluminum extrusions to make my third CNC Machine...
I need ideas how to improve the strength of such Aluminum profiles.

1- can we press fit the wood in it?
2- Filling with concrete?

Any idea is highly appreciated... Please also include the drawback of idea...:cheers:

[rowbare]

Concrete and aluminum don't play well together. There are corrosion issues. You can work around them but it looks like it would be a pain to do so.

If you have access to epoxy you could do an epoxy granite fill though. CNCCookbook: Epoxy Granite Fill

bob

[harryn]

I guess there are a few methods:
- Ask someone to buy it locally and ship the T slot beams to you. Perhaps this is easier than you think..
- Used industrial square tubing with 5 - 6 mm walls instead
- build up beams using pieces epoxied together
- Start with wood, and glue Al plate to the outside walls