Aluminum gantry Profile

[Boyan Silyavski]

Saw that yesterday in a Facebook group. Wish it was there 8 years ago. But still, a very good option. Price is good also and its in Europe, not USA or China as usually.
And to those that will say its not strong enough, bolt steel plates if you want something more rigid.

I almost want to build something new with it

https://www.vallder.com/bg/c-bg/alu-...PaWJFfcJl67n-g

[Voicecoil]

Cheers Boyan, that looks neat.

[martin54]

Along the same lines as the C Beam profile you can buy from various places, have to have a closer look at that profile when I get time lol

[Boyan Silyavski]

Along the same lines as the C Beam profile you can buy from various places, have to have a closer look at that profile when I get time lol

the C beam is something else, for cheaper builds, does not accommodate properly square linear rails or ball screw, its more for ultra low cost builds or better suited for printers.

[nhan863240]

Regarding bolting steel plate to aluminum profile, I thought the difference of thermal coeffecient would make it a trouble, probably not

[AndyUK]

Regarding bolting steel plate to aluminum profile, I thought the difference of thermal coeffecient would make it a trouble, probably not

Thermal linear expansion coefficient of Steel, ballpark 11.5 x 10-6m/(mºC). Aluminium is 22.0 x 10-6m/(mºC). The difference is therefore 0.01mm per degree, per meter of material. Lets say expected temperature variation of 30ºC maximum, on a 1 meter long gantry. Worst case, 0.3mm. Assuming M6 with a close fit clearance hole, still got another 10 degrees C before you start to stress things.

[nhan863240]

Thermal linear expansion coefficient of Steel, ballpark 11.5 x 10-6m/(mºC). Aluminium is 22.0 x 10-6m/(mºC). The difference is therefore 0.01mm per degree, per meter of material. Lets say expected temperature variation of 30ºC maximum, on a 1 meter long gantry. Worst case, 0.3mm. Assuming M6 with a close fit clearance hole, still got another 10 degrees C before you start to stress things.

Thank you! that was an "oh right!" moment for me!