who helps me in an extrusion? [press weapons]

[re_solidworks]

Hi! I tried to do as you told me, I followed the welding tutorial and I took 2 seconds. But I have to perfect several things!

I wanted to ask you:
-but when you connect between them 2 elements these are automatically welded or to join them I must always make a soldering bin?
-I wanted to use simulation express on the structure by binding the back and applying forces to the front to measure the torque stiffness, the problem is that it tells me that there are multiple bodies in the part and that I have to select only one at a time... is it possible to make the whole structure become a single part?

Thank you.

I train what I did

to compute welded parts and assemblies requires a higher level license and more precisely a premium solidworks or simulation licenses. These are specific for those who perform mainly calculations and contain, among other things, geostars.

in my work I do not carry out structural calculations, therefore I am not informed about how you have to behave with welds, sometimes I have made some evidence for purpose of predimesionment and I have succeeded you with reliable results.
I did not use the express because I have a premium license and with this happens automatic recognition of the body as unifilare and is already ready to put constraints and stresses. automatic mesh works well and the game is done.
I repeat that it is not my basket, therefore I am not informed.