In my first tutorial on GrabCAD I will show you how to create Blocks in AutoCAD.
It is nothing complicated so lets start.
First of all draw some shape or a gear like i did.
Then go to Insert tab and click create block.
You should get a window like this.
Choose "Pick point" and then click on the center of gear or whatever point you want.
Next step is to select objects you want to convert to block.
Well,select the whole object and be sure that Convert to block is checked.
You can Check Annotative too,that means you can make changes to your block after you convert it.
Do not forget to chose your units,mine are milimeters as I use ISO standard.
Now your block should have been created.
Go to Insert again and choose Insert.
We can see that the block was created.
Now click OK and put the gear next to the gear you drew.
That is all for this tutorial,I hope I helped you just a little bit :)