Quote Originally Posted by JAZZCNC View Post
Ok I'll holler first but not too much. . Lol

45x45 extrusion is pretty weak so I would consider going larger.!

5mm in aluminium is NOT enough. M6 = 1mm pitch so only 4 full threads M8= 1.25mm pitch so 3 full threads no where near enough and it will strip.!!
Thanks Jazz.

I had thought that the heavy version of the 45x45 would be strong enough as it is bolted along the back of it's whole length to 9.5 plate. I will look at replacing the top section with 45x90 then. Do you think this will be enough?

I'm hoping that tapping into 9.5mm plate... 90% more threads.... is just ok then?