*Homeright provided me with the product for this post*
Heat Pro Deluxe II by HomeRight, which they sent to me to try.
Once you have all the paint removed, then sand the area well and repaint.
Edited to add: Please read through all precautions, etc. in the book included with the tool. You should wear a face mask when removing paint. If you think that your paint contains lead, please take extra precautions before removing paint.
Got more questions on how to remove paint? Leave them in the comments and I'll do my best to answer them for you!
*Thanks to Homeright for partnering with me on this post*