I was just wondering if there is a way to make a windows 8 disc from my computer that has it downloaded on it for another computer
If you downloaded the upgrade version of W8 on to your computer you could still get another download from M'soft by using the link in your email that you received when you bought it. This time opt to download Installation Media and you'll get an ISO which could be burnt to a disk.
If you no longer have your email (you need it to activate W8 from the product key when you transfer to the other machine, having deactivated the current one) I could provide the download link. (You'll need your product key to enable download)