Centering, and other tools, in Inventor?

[R2K2D2]

Originally Posted by LBK Rules

I can't figure out how to center the parts in an assembly.

I also forgot how to rotate, using a keyboard, and resize using a keyboard.

Any help would be apperciated.

I don't know if I really understand what you are asking. What do you mean by "centering the parts in an assembly"? If you mean how do you get a specific piece in the middle of another piece, you just need to use regular constraints. Once you have placed the constraint all you have to do is use the offset feature in order to orient one piece in the direct middle of another. Let's say you have a 2"x2" block and u want to place a 1"x1" block exactly in the middle of the 2x2...We can put a mate command between both surfaces which will attach the two pieces together. Then, we can put a flush constraint on the top of both pieces and to the left of both pieces. Now the 1x1 will be squared up in the upper left hand corner of the 2x2. Then in the Model Tree go and find the two flush constraints. Choose one of them first and at the bottom of the Model Tree there will be a little box where you can set the offset. So, set a horizontal offset to the middle of the 2x2 and a vertical offset to the center of the 2x2 and now you have constrained the 1x1 box in the middle of the 2x2 box. Hope this helps and if this really wasn't what your question was referring to, post a more specific one or just feel free to ask me, id be more than happy to help.