Choosing aluminium profiles

[ericks]

I used heavy duty item 24 profile, very good quality product:)

[Boyan Silyavski]

I did not check but I guess the moment of inertia will be higher for the steel 100x100x3 compared to aluminium extrusion 90x90, even thought 90x90 has a larger cross-sectional area?

What about skipping the welding and bolting the steel frame together with angular plates or plates? That would also make it possible to disassemble the machine if you need to move it around (hopefully not) at some point.

What kind of epoxi should be used for the leveling? I have never done that before. By the way, thanks for all the answers!

There are many topics on epoxy on this forum. Somewhere on my second build i have explained very profoundly my experience. Westsystem epoxy, slow cure.

90x90 aluminum i think was same as 100x100x3 or 4mm steel. So no worry. But if steel weld it, if aluminum, bolt it.

At the end time and money spend is same, but if you have more time than money =steel, if you have more money than time=aluminum. Thats the truth for me.